.\" Automatically generated by Pod::Man 4.07 (Pod::Simple 3.32) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Ora2Pg \- Oracle to PostgreSQL database schema converter .SH "DESCRIPTION" .IX Header "DESCRIPTION" Ora2Pg is a free tool used to migrate an Oracle database to a PostgreSQL compatible schema. It connects your Oracle database, scan it automatically and extracts its structure or data, it then generates \s-1SQL\s0 scripts that you can load into your PostgreSQL database. .PP Ora2Pg can be used from reverse engineering Oracle database to huge enterprise database migration or simply to replicate some Oracle data into a PostgreSQL database. It is really easy to used and doesn't need any Oracle database knowledge than providing the parameters needed to connect to the Oracle database. .SH "FEATURES" .IX Header "FEATURES" Ora2Pg consist of a Perl script (ora2pg) and a Perl module (Ora2Pg.pm), the only thing you have to modify is the configuration file ora2pg.conf by setting the \s-1DSN\s0 to the Oracle database and optionaly the name of a schema. Once that's done you just have to set the type of export you want: \s-1TABLE\s0 with constraints, \&\s-1VIEW, TABLESPACE, SEQUENCE, INDEXES, TRIGGER, GRANT, FUNCTION, PROCEDURE, PACKAGE, PARTITION, TYPE,\s0 and \s-1DATA.\s0 .PP By default Ora2Pg exports to a file that you can load into PostgreSQL with the psql client, but you can also import directly into a PostgreSQL database by setting its \s-1DSN\s0 into the configuration file. With all configuration options of ora2pg.conf you have full control of what should be exported and how. .PP Features included: .PP .Vb 10 \& \- Export full database schema (tables, views, sequences, indexes), with \& unique, primary, foreign key and check constraints. \& \- Export grants/privileges for users and groups. \& \- Export range and list partition. \& \- Export a table selection (by specifying the table names). \& \- Export Oracle schema to a PostgreSQL 8.4+ schema. \& \- Export predefined functions, triggers, procedures, packages and \& package bodies. \& \- Export full datas or following a WHERE clause. \& \- Full support of Oracle BLOB object as PG BYTEA. \& \- Export Oracle views as PG tables. \& \- Export Oracle user defined types. \& \- Provide some basic automatic conversion of PLSQL code to PLPGSQL. \& \- Works on any plateform. .Ve .PP Ora2Pg do its best to automatically convert your Oracle database to PostgreSQL but there's still manual works to do. The Oracle specific \s-1PL/SQL\s0 code generated for functions, procedures, packages and triggers has to be reviewed to match the PostgreSQL syntax. You will find some useful recommandations on porting Oracle \s-1PL/SQL\s0 code to PostgreSQL \s-1PL/PGSQL\s0 at \*(L"Converting from other Databases to PostgreSQL\*(R", section: Oracle (http://wiki.postgresql.org/wiki/Main_Page). .SH "INSTALLATION" .IX Header "INSTALLATION" All Perl modules can always be found at \s-1CPAN \s0(http://search.cpan.org/). Just type the full name of the module (ex: DBD::Oracle) into the search input box, it will brings you the page for download. .PP Releases of Ora2Pg stay at \s-1SF\s0.net (https://sourceforge.net/projects/ora2pg/). .SS "Requirement" .IX Subsection "Requirement" You need a modern Perl distribution (perl 5.6 and more), the \s-1DBI\s0 and DBD::Oracle Perl modules to be installed. These are used to connect to the Oracle database. To install DBD::Oracle and have it working you need to have the Oracle client libraries installed and the \s-1ORACLE_HOME\s0 environment variable must be defined. .SS "Optional" .IX Subsection "Optional" By default Ora2Pg dumps export to flat files, to load them into your PostgreSQL database you need the PostgreSQL client (psql). If you don't have it on the host running Ora2Pg you can always transfer these files to a host with the psql client installed. If you prefer to load export 'on the fly', the perl module DBD::Pg is required. .PP Ora2Pg allow to dump all output int a compressed gzip file, to do that you need the Compress::Zlib Perl module or if you prefer using bzip2 compression, the program bzip2 must be available in your \s-1PATH.\s0 .SS "Installing Ora2Pg" .IX Subsection "Installing Ora2Pg" Like any other Perl Module Ora2Pg can be installed with the following commands: .PP .Vb 4 \& tar xzf ora2pg\-8.x.tar.gz \& cd ora2pg\-8.x/ \& perl Makefile.PL \& make && make install .Ve .PP This will install Ora2Pg.pm into your site Perl repository, ora2pg into /usr/bin/ and ora2pg.conf into /etc/ora2pg/. .SS "Packaging" .IX Subsection "Packaging" If you want to build binary package for your preferred Linux distribution take a look at the packaging/ directory of the source tarball. There's everything to build \s-1RPM,\s0 Slackware and Debian packages. See \s-1README\s0 file in that directory. .SH "CONFIGURATION" .IX Header "CONFIGURATION" Ora2Pg configuration can be as simple as choose the Oracle database to export and choose the export type. This can be done in the minute. .PP By reading this documentation you will also be able to: .PP .Vb 6 \& \- Select only certain tables and/or column for export. \& \- Rename some tables and/or column during export. \& \- Select datas to export following a WHERE clause per table. \& \- Delay database constraints during data loading. \& \- Compress exported data to save disk space. \& \- and much more. .Ve .PP The full control of the Oracle database migration is taken though a single configuration file named ora2pg.conf. The format of this file consist in a directive name in upper case followed by tab character and a value. Comments are lines beginning with a #. .SS "Ora2Pg usage" .IX Subsection "Ora2Pg usage" By default Ora2Pg will look for /etc/ora2pg/ora2pg.conf configuration file, if the file exist you can simply execute: .PP .Vb 1 \& /usr/bin/ora2pg .Ve .PP If you want to call another configuration file, just give the path as command line argument: .PP .Vb 1 \& /usr/bin/ora2pg \-\-config /etc/ora2pg/new_ora2pg.conf .Ve .PP Here are all command line parameters available since version 6.0: .PP Usage: ora2pg [\-dhvp] [\-\-option value] .PP .Vb 10 \& \-d | \-\-debug : Enable verbose output. \& \-h | \-\-help : Print this short help. \& \-v | \-\-version : Show Ora2Pg Version and exit. \& \-c | \-\-conf file : Used to set an alternate configuration file than the \& default /etc/or2pg/ora2pg.conf. \& \-l | \-\-log file : Used to set a log file. Default is stdout. \& \-o | \-\-out file : Used to set the path to the output file where SQL will \& be written. Default: output.sql in running directory. \& \-t | \-\-type export: Used to set the export type. It will override the one \& given in the configuration file (TYPE). \& \-p | \-\-plsql : Enable PLSQL to PLPSQL code conversion. \& \-s | \-\-source dsn : Allow to set the Oracle DBI datasource. \& \-u | \-\-user user : Used to set the Oracle database connection user. \& \-w | \-\-password pass: Used to set the password of the Oracle database user. \& \-n | \-\-namespace schema: Used to set the Oracle schema to extract from. \& \-x | \-\-xtable relname: Used to display columns names of the given table, \& could be used with SHOW_COLUMN type only. \& \-f | \-\-forceowner : if set to 1 force ora2pg to set tables and sequences \& owner. If the value is set to a username this one will \& be set as the objects owner. \& \-\-nls_lang code: use this to set the Oracle NLS_LANG client encoding. \& \-\-client_encoding code: Use this to set the PostgreSQL client encoding. \& \-i | \-\-input_file file: File containing Oracle PL/SQL code to convert with \& no Oracle database connection initiated. .Ve .PP Previous version do not accept any command line parameter than the path to the configuration file. .SS "Oracle database connection" .IX Subsection "Oracle database connection" There's 5 configuration directives to control the access to the Oracle database. .IP "\s-1ORACLE_HOME\s0" 4 .IX Item "ORACLE_HOME" Used to set \s-1ORACLE_HOME\s0 environment variable to the Oracle libraries required by the DBD::Oracle Perl module. .IP "\s-1ORACLE_DSN\s0" 4 .IX Item "ORACLE_DSN" This directive is used to set the data source name in the form standard \s-1DBI DSN.\s0 For example: .Sp .Vb 1 \& dbi:Oracle:host=oradb_host.mydom.dom;sid=TEST .Ve .Sp or .Sp .Vb 1 \& dbi:Oracle:DB_SID .Ve .Sp The \s-1SID\s0 must be declared in the \f(CW$ORACLE_HOME\fR/network/admin/tnsnames.ora file. .IP "\s-1ORACLE_USER\s0 et \s-1ORACLE_PWD\s0" 4 .IX Item "ORACLE_USER et ORACLE_PWD" These two directives are used to define the user and password for the Oracle database connection. Note that if you can it is better to login as Oracle super admin to avoid grants problem during the database scan and be sure that nothing is missing. .IP "\s-1USER_GRANTS\s0" 4 .IX Item "USER_GRANTS" Set this directive to 1 if you connect the Oracle database as simple user and do not have enough grants to extract things from the \s-1DBA_...\s0 tables. It will use tables \s-1ALL_...\s0 instead. .Sp Warning: if you use export type \s-1GRANT,\s0 you must set this configuration option to 0 or it will not works. .IP "\s-1TRANSACTION\s0" 4 .IX Item "TRANSACTION" This directive may be used if you want to change the default isolation level of the data export transaction. Default is now to set the level to a serializable transaction to ensure data consistency. The allowed values for this directive are: .Sp .Vb 4 \& readonly: \*(AqSET TRANSACTION READ ONLY\*(Aq, \& readwrite: \*(AqSET TRANSACTION READ WRITE\*(Aq, \& serializable: \*(AqSET TRANSACTION ISOLATION LEVEL SERIALIZABLE\*(Aq \& committed: \*(AqSET TRANSACTION ISOLATION LEVEL READ COMMITTED\*(Aq, .Ve .Sp Releases before 6.2 used to set the isolation level to \s-1READ ONLY\s0 transaction but in some case this was breaking data consistency so now default is set to \&\s-1SERIALIZABLE.\s0 .IP "\s-1INPUT_FILE\s0" 4 .IX Item "INPUT_FILE" This directive did not control the Oracle database connection or unless it purely disable the use of any Oracle database by accepting a file as argument. Set this directive to a file containing \s-1PL/SQL\s0 Oracle Code like function, procedure or full package body to prevent Ora2Pg from connecting to an Oracle database end just apply his convertion tool to the content of the file. This can only be used with the following export type: \s-1PROCEDURE, FUNCTION\s0 or \s-1PACKAGE.\s0 If you don't know what you do don't use this directive, I use it to find \s-1PL/SQL\s0 parser and \s-1PL/PGSQL\s0 converter issues. .SS "Testing" .IX Subsection "Testing" Once you have set the Oracle database \s-1DSN\s0 you can execute ora2pg to see if it works. By default the configuration file will export the database schema to a file called 'output.sql'. Take a look in it to see if the schema has been exported. .PP Take some time here to test your installation as most of the problem take place here, the other configuration step are more technical. .SS "Trouble shooting" .IX Subsection "Trouble shooting" If the output.sql file has not exported anything else than the Pg transaction header and footer there's two possible reasons. The perl script ora2pg dump an ORA-XXX error, that mean that you \s-1DSN\s0 or login information are wrong, check the error and your settings and try again. The perl script says nothing and the output file is empty: the user has not enough right to extract something from the database. Try to connect Oracle as super user or take a look at directive \&\s-1USER_GRANTS\s0 above and at next section, especiallly the \s-1SCHEMA\s0 directive. .SS "Oracle schema to export" .IX Subsection "Oracle schema to export" The Oracle database export can be limited to a specific Schema or Namespace, this can be mandatory following the database connection user. .IP "\s-1SCHEMA\s0" 4 .IX Item "SCHEMA" This directive is used to set the schema name to use during export. Take care that this directive is case sensitive. For example: .Sp .Vb 1 \& SCHEMA APPS .Ve .Sp will only extract objects associated to the \s-1APPS\s0 schema. .IP "\s-1EXPORT_SCHEMA\s0" 4 .IX Item "EXPORT_SCHEMA" By default the Oracle schema is not exported into the PostgreSQL database and all objects are created under the default Pg namespace. If you want to also export this schema and create all objects under this namespace, set the \&\s-1EXPORT_SCHEMA\s0 directive to 1. This will set the schema search_path at top of export \s-1SQL\s0 file to the schema name set in the \s-1SCHEMA\s0 directive with the default pg_catalog schema. If you want to change this path, use the directive \s-1PG_SCHEMA.\s0 .IP "\s-1COMPILE_SCHEMA\s0" 4 .IX Item "COMPILE_SCHEMA" By default Ora2Pg will only export valid \s-1PL/SQL\s0 code. You can force Oracle to compile again the invalidated code to get a chance to have it obtain the valid status and then be able to export it. .Sp Enable this directive to force Oracle to compile schema before exporting code. This will ask to Oracle to validate the \s-1PL/SQL\s0 that could have been invalidate after a export/import for example. If you set the value to 1 it will exec: \&\s-1DBMS_UTILITY\s0.compile_schema(schema => sys_context('\s-1USERENV\s0', '\s-1SESSION_USER\s0')); but if you provide the name of a particular schema it will use the following command: \s-1DBMS_UTILITY\s0.compile_schema(schema => 'schemaname'); The '\s-1VALID\s0' or '\s-1INVALID\s0' status applies to functions, procedures, packages and user defined types. .IP "\s-1EXPORT_INVALID\s0" 4 .IX Item "EXPORT_INVALID" If the above configuration directive is not enough to validate your \s-1PL/SQL\s0 code enable this configuration directive to allow export of all \s-1PL/SQL\s0 code even if it is marked as invalid. The '\s-1VALID\s0' or '\s-1INVALID\s0' status applies to functions, procedures, packages and user defined types. .IP "\s-1PG_SCHEMA\s0" 4 .IX Item "PG_SCHEMA" Allow you to defined/force the PostgreSQL schema to use. The value can be a coma delimited list of schema name. By default if you set \s-1EXPORT_SCHEMA\s0 to 1, the PostgreSQL schema search_path will be set to the schema name set as value of the \s-1SCHEMA\s0 directive plus the default pg_catalog schema as follow: .Sp .Vb 1 \& SET search_path = $SCHEMA, pg_catalog; .Ve .Sp If you set \s-1PG_SCHEMA\s0 to something like \*(L"user_schema, public\*(R" for example the search path will be set like this: .Sp .Vb 2 \& SET search_path = $PG_SCHEMA; \& \-\- SET search_path = user_schema, public; .Ve .Sp This will force to not use the Oracle schema set in the \s-1SCHEMA\s0 directive. .IP "\s-1SYSUSERS\s0" 4 .IX Item "SYSUSERS" Without explicit schema, Ora2Pg will export all objects that not belongs to system schema or role: \s-1SYS, SYSTEM, DBSNMP, OUTLN, PERFSTAT, CTXSYS, XDB, WMSYS, SYSMAN, SQLTXPLAIN, MDSYS, EXFSYS, ORDSYS, DMSYS, OLAPSYS, FLOWS_020100, FLOWS_FILES, TSMSYS.\s0 Following your Oracle installation you may have several other system role defined. To append these users to the schema exclusion list, just set the \s-1SYSUSERS\s0 configuration directive to a coma separated list of system user to exclude. For example: .Sp .Vb 1 \& SYSUSERS INTERNAL,SYSDBA .Ve .Sp will add users \s-1INTERNAL\s0 and \s-1SYSDBA\s0 to the schema exclusion list. .IP "\s-1FORCE_OWNER\s0" 4 .IX Item "FORCE_OWNER" By default the owner of the database objects is the one you're using to connect to PostgreSQL using the psql command. If you use another user (postgres for exemple) you can force Ora2Pg to set the object owner to be the one used in the Oracle database by setting the directive to 1, or to a completely different username by setting the directive value to that username. .SS "Export type" .IX Subsection "Export type" The export action is perform following a single configuration directive '\s-1TYPE\s0', some other add more control on what should be really exported. .IP "\s-1TYPE\s0" 4 .IX Item "TYPE" Here are the different values of the \s-1TYPE\s0 directive, default is \s-1TABLE:\s0 .Sp .Vb 10 \& \- TABLE: Extract all tables with indexes, primary keys, unique keys, \& foreign keys and check constraints. \& \- VIEW: Extract only views. \& \- GRANT: Extract roles converted to Pg groups, users and grants on all \& objects. \& \- SEQUENCE: Extract all sequence and their last position. \& \- TABLESPACE: Extract storage spaces for tables and indexes (Pg >= v8). \& \- TRIGGER: Extract triggers defined following actions. \& \- FUNCTION: Extract functions. \& \- PROCEDURE: Extract procedures. \& \- PACKAGE: Extract packages and package bodies. \& \- DATA: Extract datas as INSERT statement. \& \- COPY: Extract datas as COPY statement. \& \- PARTITION: Extract range and list Oracle partitioning. \& \- TYPE: Extract user defined Oracle type. .Ve .Sp Only one type of export can be perform at the same time so the \s-1TYPE\s0 directive must be unique. If you have more than one only the last found in the file will be registered. .Sp Some export type can not or should not be load directly into the PostgreSQL database and still require little manual editing. This is the case for \s-1GRANT, TABLESPACE, TRIGGER, FUNCTION, PROCEDURE, TYPE\s0 and \s-1PACKAGE\s0 export types especially if you have \s-1PLSQL\s0 code or Oracle specific \s-1SQL\s0 in it. .Sp For \s-1TABLESPACE\s0 you must ensure that file path exist on the system. .Sp Note that you can chained multiple export by giving to the \s-1TYPE\s0 directive a coma separated list of export type. .Sp The \s-1PARTITION\s0 export is a work in progress as table partition support is not yet implemented into PostgreSQL. Ora2Pg will convert Oracle partition using table inheritence, trigger and function workaround. See document at Pg site: http://www.postgresql.org/docs/current/interactive/ddl\-partitioning.html This new feature in Ora2Pg has not been widly tested so feel free to report any bug and patch. .Sp The \s-1TYPE\s0 export allow export of user defined Oracle type. If you don't use the \&\-\-plsql command line parameter it simply dump Oracle user type asis else Ora2Pg will try to convert it to PostgreSQL syntax. .Sp Since Ora2Pg v8.1 there's three new export types: .Sp .Vb 3 \& SHOW_SCHEMA : display the list of schema available in the database. \& SHOW_TABLE : display the list of tables available. \& SHOW_COLUMN : display the list of tables columns available. .Ve .Sp Since Ora2Pg v8.2 there's a new export type: .Sp .Vb 1 \& SHOW_ENCODING : display the Oracle session encoding, useful to set NSL_LANG. .Ve .Sp Those extraction keyword are use to only display the requested information and exit. This allow you to quickly know on what you are going to work. The \s-1SHOW_COLUMN\s0 allow a new ora2pg command line option: '\-\-xtable relname' or '\-x relname' to limit the displayed information to the given table. .IP "\s-1THREAD_COUNT\s0" 4 .IX Item "THREAD_COUNT" This configuration directive adds multi-threading support to data export type, the value is the number of threads to use. Default to zero, disabled multi-threading. It is only used to do the escaping to convert LOBs to byteas, as it is very \s-1CPU\s0 hungry. Putting 6 threads will only triple your throughput, if your machine has enough cores. If zero do not use threads, do not waste \s-1CPU,\s0 but be slower with bytea. Performance seems to peak at 5 threads, if you have enough cores, and triples throughput on tables having \s-1LOB.\s0 Another important thing: because of the way threading works in perl, threads consume a lot of memory. Put a low (5000 for instance) \s-1DATA_LIMIT\s0 if you activate threading. .Sp If your Perl installation do not support threads, multi-threading will not be enabled. This configuration directive is available since Ora2Pg v8.7 thanks to the work of Marc Cousin. .SS "Limiting object to export" .IX Subsection "Limiting object to export" You may want to export only a part of an Oracle database, here are a set of configuration directives that will allow you to control what parts of the database should be exported. .IP "\s-1TABLES\s0" 4 .IX Item "TABLES" This directive allow you to set a list of tables on witch the export must be limited, excluding all other tables. The value is a space separated list of table name to export. .IP "\s-1EXCLUDE\s0" 4 .IX Item "EXCLUDE" This directive is the opposite of the previous, it allow you to define a space separated list of table name to exclude from the export. .IP "\s-1WHERE\s0" 4 .IX Item "WHERE" This directive allow you to specify a \s-1WHERE\s0 clause filter when dumping the contents of tables. Value is construct as follow: TABLE_NAME[\s-1WHERE_CLAUSE\s0], or if you have only one where clause for each table just put the where clause as value. Both are possible too. Here are some examples: .Sp .Vb 2 \& # Global where clause applying to all tables included in the export \& WHERE 1=1 \& \& # Apply the where clause only on table TABLE_NAME \& WHERE TABLE_NAME[ID1=\*(Aq001\*(Aq] \& \& # Applies two different clause on tables TABLE_NAME and OTHER_TABLE \& # and a generic where clause on DATE_CREATE to all other tables \& WHERE TABLE_NAME[ID1=\*(Aq001\*(Aq AND ID1=\*(Aq002] DATE_CREATE > \*(Aq2001\-01\-01\*(Aq OTHER_TABLE[NAME=\*(Aqtest\*(Aq] .Ve .Sp Any where clause not included into a table name bracket clause will be applied to all exported table including the tables defined in the where clause. These \&\s-1WHERE\s0 clauses are very useful if you want to archive some data or at the opposite only export some recent data. .SS "Modifying object structure" .IX Subsection "Modifying object structure" One of the great usage of Ora2Pg is its flexibility to replicate Oracle database into PostgreSQL database with a different structure or schema. There's three configuration directives that allow you to map those differences. .IP "\s-1MODIFY_STRUCT\s0" 4 .IX Item "MODIFY_STRUCT" This directive allow you to limit the columns to extract for a given table. The value consist in a space separated list of table name with a set of column between parenthesis as follow: .Sp .Vb 1 \& MODIFY_STRUCT NOM_TABLE(nomcol1,nomcol2,...) ... .Ve .Sp for example: .Sp .Vb 1 \& MODIFY_STRUCT T_TEST1(id,dossier) T_TEST2(id,fichier) .Ve .Sp This will only extract columns 'id' and 'dossier' from table T_TEST1 and columns \&'id' and 'fichier' from the T_TEST2 table. .IP "\s-1REPLACE_TABLES\s0" 4 .IX Item "REPLACE_TABLES" This directive allow you to remap a list of Oracle table name to a PostgreSQL table name during export. The value is a list of space separated values with the following structure: .Sp .Vb 1 \& REPLACE_TABLES ORIG_TBNAME1:DEST_TBNAME1 ORIG_TBNAME2:DEST_TBNAME2 .Ve .Sp Oracle tables \s-1ORIG_TBNAME1\s0 and \s-1ORIG_TBNAME2\s0 will be respectively renamed into \&\s-1DEST_TBNAME1\s0 and \s-1DEST_TBNAME2\s0 .IP "\s-1REPLACE_COLS\s0" 4 .IX Item "REPLACE_COLS" Like table name, the name of the column can be remapped to a different name using the following syntaxe: .Sp .Vb 1 \& REPLACE_COLS ORIG_TBNAME(ORIG_COLNAME1:NEW_COLNAME1,ORIG_COLNAME2:NEW_COLNAME2) .Ve .Sp For example: .Sp .Vb 1 \& REPLACE_COLS T_TEST(dico:dictionary,dossier:folder) .Ve .Sp will rename Oracle columns 'dico' and 'dossier' from table T_TEST into new name \&'dictionary' and 'folder'. .SS "PostgreSQL Import" .IX Subsection "PostgreSQL Import" By default conversion to PostgreSQL format is written to file 'output.sql'. The command: .PP .Vb 1 \& psql mydb < output.sql .Ve .PP will import content of file output.sql into PostgreSQL mydb database. .IP "\s-1DATA_LIMIT\s0" 4 .IX Item "DATA_LIMIT" When you are performing \s-1DATA/COPY\s0 export Ora2Pg proceed by chunks of \s-1DATA_LIMIT\s0 tuples for speed improvement. Tuples are stored in memory before being written to disk, so if you want speed and have enough system resources you can grow this limit to an upper value for example: 100000 or 1000000. Before release 7.0 a value of 0 mean no limit so that all tuples are stored in memory before being flushed to disk. In 7.x branch this has been remove and chunk will be set to the default: 10000 .IP "\s-1OUTPUT\s0" 4 .IX Item "OUTPUT" The Ora2Pg output filename can be changed with this directive. Default value is output.sql. if you set the file name with extension .gz or .bz2 the output will be automatically compressed. This require that the Compress::Zlib Perl module is installed if the filename extension is .gz and that the bzip2 system command is installed for the .bz2 extension. .IP "\s-1OUTPUT_DIR\s0" 4 .IX Item "OUTPUT_DIR" Since release 7.0, you can define a base directory where wfile will be written. The directory must exists. .IP "\s-1BZIP2\s0" 4 .IX Item "BZIP2" This directive allow you to specify the full path to the bzip2 program if it can not be found in the \s-1PATH\s0 environment variable. .IP "\s-1FILE_PER_CONSTRAINT\s0" 4 .IX Item "FILE_PER_CONSTRAINT" Allow object constraints to be saved in a separate file during schema export. The file will be named \s-1CONSTRAINTS_OUTPUT,\s0 where \s-1OUTPUT\s0 is the value of the corresponding configuration directive. You can use .gz xor .bz2 extension to enable compression. Default is to save all data in the \s-1OUTPUT\s0 file. This directive is usable only with \s-1TABLE\s0 export type. .IP "\s-1FILE_PER_INDEX\s0" 4 .IX Item "FILE_PER_INDEX" Allow indexes to be saved in a separate file during schema export. The file will be named \s-1INDEXES_OUTPUT,\s0 where \s-1OUTPUT\s0 is the value of the corresponding configuration directive. You can use .gz xor .bz2 file extension to enable compression. Default is to save all data in the \s-1OUTPUT\s0 file. This directive is usable only with \s-1TABLE\s0 export type. .IP "\s-1FILE_PER_TABLE\s0" 4 .IX Item "FILE_PER_TABLE" Allow data export to be saved in one file per table/view. The files will be named as tablename_OUTPUT, where \s-1OUTPUT\s0 is the value of the corresponding configuration directive. You can still use .gz xor .bz2 extension in the \s-1OUTPUT\s0 directive to enable compression. Default 0 will save all data in one file, set it to 1 to enable this feature. This is usable only during \s-1DATA\s0 or \s-1COPY\s0 export type. .IP "\s-1FILE_PER_FUNCTION\s0" 4 .IX Item "FILE_PER_FUNCTION" Allow functions, procedures and triggers to be saved in one file per object. The files will be named as objectname_OUTPUT. Where \s-1OUTPUT\s0 is the value of the corresponding configuration directive. You can still use .gz xor .bz2 extension in the \s-1OUTPUT\s0 directive to enable compression. Default 0 will save all in one single file, set it to 1 to enable this feature. This is usable only during the corresponding export type, the package body export has a special behavior. .Sp When export type is \s-1PACKAGE\s0 and you've enabled this directive, Ora2Pg will create a directory per package, named with the lower case name of the package, and will create one file per function/procedure into that directory. If the configuration directive is not enabled, it will create one file per package as packagename_OUTPUT, where \s-1OUTPUT\s0 is the value of the corresponding directive. .IP "\s-1TRUNCATE_TABLE\s0" 4 .IX Item "TRUNCATE_TABLE" If this directive is set to 1, a \s-1TRUNCATE TABLE\s0 instruction will be add before loading data. This is usable only during \s-1DATA\s0 or \s-1COPY\s0 export type. .PP If you want to import data on the fly to the PostgreSQL database you have three configuration directives to set the PostgreSQL database connection. This is only possible with '\s-1COPY\s0' or '\s-1DATA\s0' export type as for database schema there's no real interest to do that. .IP "\s-1PG_DSN\s0" 4 .IX Item "PG_DSN" Use this directive to set the PostgreSQL data source namespace using DBD::Pg Perl module as follow: .Sp .Vb 1 \& dbi:Pg:dbname=pgdb;host=localhost;port=5432 .Ve .Sp will connect to database 'pgdb' on localhost at tcp port 5432. .IP "\s-1PG_USER\s0 and \s-1PG_PWD\s0" 4 .IX Item "PG_USER and PG_PWD" These two directives are used to set the login user and password. .SS "Taking export under control" .IX Subsection "Taking export under control" The following other configuration directives interact directly with the export process and give you fine granuality in database export control. .IP "\s-1SKIP\s0" 4 .IX Item "SKIP" For \s-1TABLE\s0 export you may not want to export all schema constraints, the \s-1SKIP\s0 configuration directive allow you to specify a space separated list of constraints that should not be exported. Possible values are: .Sp .Vb 5 \& \- fkeys: turn off foreign key constraints \& \- pkeys: turn off primary keys \& \- ukeys: turn off unique column constraints \& \- indexes: turn off all other index types \& \- checks: turn off check constraints .Ve .Sp For example: .Sp .Vb 1 \& SKIP indexes,checks .Ve .Sp will removed indexes ans check constraints from export. .IP "\s-1KEEP_PKEY_NAMES\s0" 4 .IX Item "KEEP_PKEY_NAMES" By default names of the primary key in the source Oracle database are ignored and key names are created in the target PostgreSQL database with the PostgreSQL internal default naming rules. If you want to preserve Oracle primary key names set this option to 1. .IP "\s-1FKEY_DEFERRABLE\s0" 4 .IX Item "FKEY_DEFERRABLE" When exporting tables, Ora2Pg normally exports constraints as they are, if they are non-deferrable they are exported as non-deferrable. However, non-deferrable constraints will probably cause problems when attempting to import data to Pg. The \s-1FKEY_DEFERRABLE\s0 option set to 1 will cause all foreign key constraints to be exported as deferrable. .IP "\s-1DEFER_FKEY\s0" 4 .IX Item "DEFER_FKEY" In addition, when exporting data the \s-1DEFER_FKEY\s0 option set to 1 will add a command to defer all foreign key constraints during data export. Constraints will then be checked at the end of each transaction. Note that this will works only if foreign keys are deferrable and that all datas can stay in a single transaction. .Sp Since release 7.0 Ora2Pg will first try to ordered data export following the tables foreign keys. If it fails (some cases can not be handle), Ora2Pg will set constraint all deferrable if \s-1DEFER_FKEY\s0 is activated and \s-1DROP_FKEY\s0 disabled. .IP "\s-1DROP_FKEY\s0" 4 .IX Item "DROP_FKEY" New since release 7.0 this directive enabled force the deletion of all foreign keys before data import and to recreate them at end of the import. .IP "\s-1DROP_INDEXES\s0" 4 .IX Item "DROP_INDEXES" This direction is also introduce since version 7.0 and allow you to gain lot of speed improvement during data import by removing all indexes that are not an automatic index (ex: indexes of primary keys) and recreate them at the end of data import. .IP "\s-1DISABLE_TABLE_TRIGGERS\s0" 4 .IX Item "DISABLE_TABLE_TRIGGERS" This directive is used to disables triggers on all tables in \s-1COPY\s0 or \s-1DATA\s0 export modes during data migration. The possible values are 0 to enable triggers, \s-1USER\s0 to disable userdefined triggers and \s-1ALL\s0 to disable userdefined triggers as well as includes \s-1RI\s0 system triggers. .IP "\s-1DISABLE_SEQUENCE\s0" 4 .IX Item "DISABLE_SEQUENCE" If set to 1 disables alter of sequences on all tables during \s-1COPY\s0 or \s-1DATA\s0 export mode. This is used to prevent the update of sequence during data migration. Default is 0, alter sequences. .IP "\s-1NOESCAPE\s0" 4 .IX Item "NOESCAPE" By default all datas exported as \s-1INSERT\s0 statement are escaped, if you experience any problem with that set it to 1 to disable character escaping during data export. .IP "\s-1PG_NUMERIC_TYPE\s0" 4 .IX Item "PG_NUMERIC_TYPE" This directive set to 1 replace portable numeric type into PostgreSQL internal type as numeric(p,s) type is much slower than the different PostgreSQL numeric types. Oracle data type \s-1NUMBER\s0(p,s) is approximatively converted to smallint, integer, bigint, real and float PostgreSQL numeric type following the precision. If you have lot of monetary fields you should preserve the numeric(p,s) Pg data type if you need very good precision. \s-1NUMBER\s0 without precision are set to float unless you redefine it with the \s-1DEFAULT_NUMERIC\s0 configuration option. .IP "\s-1DEFAULT_NUMERIC\s0" 4 .IX Item "DEFAULT_NUMERIC" \&\s-1NUMBER\s0 without precision are converted by default to bigint if \s-1PG_NUMERIC_TYPE\s0 is true. You can overwrite this value to any \s-1PG\s0 numeric type, like smallint or integer. Note that before release 7.0 the value was wrongly set to float. .IP "\s-1DATA_TYPE\s0" 4 .IX Item "DATA_TYPE" If you're experiencing any problem in data type schema conversion with this directive you can take full control of the correspondence between Oracle and PostgreSQL types to redefine data type translation used in Ora2pg. The syntax is a coma separated list of \*(L"Oracle datatype:Postgresql datatype\*(R". Here are the default list used: .Sp .Vb 1 \& DATA_TYPE DATE:timestamp,LONG:text,LONG RAW:text,CLOB:text,NCLOB:text,BLOB:bytea,BFILE:bytea,RAW:bytea,ROWID:oid,FLOAT:double precision,DEC:decimal,DECIMAL:decimal,DOUBLE PRECISION:double precision,INT:integer,INTEGER:integer,REAL:real,SMALLINT:smallint,BINARY_FLOAT:double precision,BINARY_DOUBLE:double precision,TIMESTAMP:timestamp .Ve .Sp Note that the directive and the list definition must be a single line. .IP "\s-1CASE_SENSITIVE\s0" 4 .IX Item "CASE_SENSITIVE" By default Ora2P convert all object names to lower case as PostgreSQL is case insensitive. If you want to preserve the case of Oracle object name set this directive to 1. I do not recommand this unless you always quote object names on all your scripts. .IP "\s-1ORA_SENSITIVE\s0" 4 .IX Item "ORA_SENSITIVE" Since version 4.10 you can export Oracle databases with case sensitive table or view names. This requires the use of quoted table/view names during Oracle querying. Set this configuration option to 1 to enable this feature. By default it is off. .IP "\s-1ORA_RESERVED_WORDS\s0" 4 .IX Item "ORA_RESERVED_WORDS" Allow escaping of column name using Oracle reserved words. Value is a list of coma separated reserved word. Default is audit,comment. .IP "\s-1GEN_USER_PWD\s0" 4 .IX Item "GEN_USER_PWD" Set this directive to 1 to replace default password by a random password for all extracted user during a \s-1GRANT\s0 export. .IP "\s-1PG_SUPPORTS_ROLE \s0(Deprecated)" 4 .IX Item "PG_SUPPORTS_ROLE (Deprecated)" This option is deprecated since Ora2Pg release v7.3. .Sp By default Oracle roles are translated into PostgreSQL groups. If you have PostgreSQL 8.1 or more consider the use of \s-1ROLES\s0 and set this directive to 1 to export roles. .IP "\s-1PG_SUPPORTS_INOUT \s0(Deprecated)" 4 .IX Item "PG_SUPPORTS_INOUT (Deprecated)" This option is deprecated since Ora2Pg release v7.3. .Sp If set to 0, all \s-1IN, OUT\s0 or \s-1INOUT\s0 parameters will not be used into the generated PostgreSQL function declarations (disable it for PostgreSQL database version lower than 8.1), This is now enable by default. .IP "\s-1PG_SUPPORTS_DEFAULT\s0" 4 .IX Item "PG_SUPPORTS_DEFAULT" This directive enable or disable the use of default parameter value in function export. Until PostgreSQL 8.4 such a default value was not supported, this feature is now enable by default. .IP "\s-1PG_SUPPORTS_WHEN\s0" 4 .IX Item "PG_SUPPORTS_WHEN" Add support to \s-1WHEN\s0 clause on triggers as PostgreSQL v9.0 now support it. This directive is disabled by default, set it to 1 enable this feature. .IP "\s-1PG_SUPPORTS_INSTEADOF\s0" 4 .IX Item "PG_SUPPORTS_INSTEADOF" Add support to \s-1INSTEAD OF\s0 usage on triggers (for incoming \s-1PG \s0>= 9.1), if this directive is not enabled the \s-1INSTEAD OF\s0 triggers will be rewritten as Pg rules. .IP "\s-1LONGREADLEN\s0" 4 .IX Item "LONGREADLEN" Use this directive to set the database handle's 'LongReadLen' attribute to a value that will be the larger than the expected size of the LOBs. The default is 1Mb witch may not be enough to extract BLOBs or CLOBs. If the size of the \s-1LOB\s0 exceeds the 'LongReadLen' DBD::Oracle will return a '\s-1ORA\-24345: A\s0 Truncation' error. Default: 1023*1024 bytes. .Sp Take a look at this page to learn more: http://search.cpan.org/~pythian/DBD\-Oracle\-1.22/Oracle.pm#Data_Interface_for_Persistent_LOBs .IP "\s-1LONGTRUNKOK\s0" 4 .IX Item "LONGTRUNKOK" If you want to bypass the '\s-1ORA\-24345: A\s0 Truncation' error, set this directive to 1, it will truncate the data extracted to the LongReadLen value. Disable by default. .SS "Special options to handle character encoding" .IX Subsection "Special options to handle character encoding" .IP "\s-1NLS_LANG\s0" 4 .IX Item "NLS_LANG" If you experience any issues where mutibyte characters are being substituted with some replacement characters during the export try to set the \s-1NLS_LANG\s0 configuration directive to the Oracle encoding. This may help a lot especially with \s-1UTF8\s0 encoding. For example: .Sp .Vb 1 \& NLS_LANG AMERICAN_AMERICA.UTF8 .Ve .Sp This will set \f(CW$ENV\fR{\s-1NLS_LANG\s0} to the given value. .IP "\s-1BINMODE\s0" 4 .IX Item "BINMODE" If you experience the Perl warning: \*(L"Wide character in print\*(R", it means that you tried to write a Unicode string to a non-unicode file handle. You can force Perl to use binary mode for output by setting the \s-1BINMODE\s0 configuration option to the specified encoding. If you set it to 'utf8', it will force printing like this: binmode \s-1OUTFH, \s0\*(L":utf8\*(R"; By default Ora2Pg opens the output file in 'raw' binary mode. .IP "\s-1CLIENT_ENCODING\s0" 4 .IX Item "CLIENT_ENCODING" If you experience \s-1ERROR:\s0 invalid byte sequence for encoding \*(L"\s-1UTF8\*(R":\s0 0xe87472 when loading data you may want to set the encoding of the PostgreSQL client. By default it is not set and it will depend of you system client encoding. .Sp For example, let's say you have an Oracle database with all data encoded in \&\s-1FRENCH_FRANCE.WE8ISO8859P15,\s0 your system use fr_FR.UTF\-8 as console encoding and your PostgreSQL database is encoded in \s-1UTF8.\s0 What you have to do is set the \&\s-1NLS_LANG\s0 to \s-1FRENCH_FRANCE.WE8ISO8859P15\s0 and the \s-1CLIENT_ENCODING\s0 to \s-1LATIN9.\s0 .Sp You can take a look at the PostgreSQL supported character sets here: http://www.postgresql.org/docs/9.0/static/multibyte.html .SS "\s-1PLSQL\s0 to \s-1PLPSQL\s0 convertion" .IX Subsection "PLSQL to PLPSQL convertion" Automatic code convertion from Oracle \s-1PLSQL\s0 to PostgreSQL \s-1PLPGSQL\s0 is a work in progress in Ora2Pg and surely you will always have manual work. The Perl code used for automatic conversion is all stored in a specific Perl Module named Ora2Pg/PLSQL.pm feel free to modify/add you own code and send me patches. The main work in on function, procedure, package and package body headers and parameters rewrite. .IP "\s-1PLSQL_PGSQL\s0" 4 .IX Item "PLSQL_PGSQL" Enable/disable \s-1PLSQL\s0 to \s-1PLPSQL\s0 convertion. Enabled by default since 8.x. .IP "\s-1ALLOW_CODE_BREAK\s0" 4 .IX Item "ALLOW_CODE_BREAK" This directive is use to enable/disable the plsql to pgplsql conversion part that could break the original code if they include complex subqueries. Default is enabled, you must disabled if to preserve backward compatibility. This concern the following replacement: \fIdecode()\fR, \fIsubstr()\fR .Sp For example code like this: .Sp .Vb 1 \& substr(decode("db_status",\*(Aqactive\*(Aq,"dbname",null),1,128) .Ve .Sp can easily be replaced by the PostgreSQL equivalent: .Sp .Vb 1 \& substring((CASE WHEN "db_status"=\*(Aqactive\*(Aq THEN "dbname" ELSE NULL END) from 1 for 128)) .Ve .Sp The problem could comes when you introduce subquery into one of the \fIsubstr()\fR or \fIdecode()\fR parameter. For example the replacement of .Sp .Vb 1 \& substr(decode("db_status",(select status from dbcluster where lbl=substr("dbname",1,3)),"dbname",null),1,128) .Ve .Sp will break the code. You can still compare to the original Oracle code and solve the problem, but if you want you can disable this unsecure replacement. .SS "Other configuration directives" .IX Subsection "Other configuration directives" .IP "\s-1DEBUG\s0" 4 .IX Item "DEBUG" Set it to 1 will enable verbose output. .IP "\s-1IMPORT\s0" 4 .IX Item "IMPORT" You can define common Ora2Pg configuration directives into a single file that can be imported into other configuration files with the \s-1IMPORT\s0 configuration directive as follow: .Sp .Vb 1 \& IMPORT commonfile.conf .Ve .Sp will import all configuration directives defined into commonfile.conf into the current configuration file. .SH "SUPPORT" .IX Header "SUPPORT" .SS "Author / Maintainer" .IX Subsection "Author / Maintainer" Gilles Darold .PP Please report any bugs, patches, help, etc. to . .SS "Feature request" .IX Subsection "Feature request" If you need new features let me know at . This help a lot to develop a better/useful tool. .SS "How to contribute ?" .IX Subsection "How to contribute ?" Any contribution to build a better tool is welcome, you just have to send me your ideas, features request or patches and there will be applied. .SH "LICENSE" .IX Header "LICENSE" Copyright (c) 2000\-2011 Gilles Darold \- All rights reserved. .PP .Vb 4 \& This program is free software: you can redistribute it and/or modify \& it under the terms of the GNU General Public License as published by \& the Free Software Foundation, either version 3 of the License, or \& any later version. \& \& This program is distributed in the hope that it will be useful, \& but WITHOUT ANY WARRANTY; without even the implied warranty of \& MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the \& GNU General Public License for more details. \& \& You should have received a copy of the GNU General Public License \& along with this program. If not, see < http://www.gnu.org/licenses/ >. .Ve .SH "ACKNOWLEDGEMENT" .IX Header "ACKNOWLEDGEMENT" I must thanks a lot all the great contributors: .PP .Vb 10 \& Guillaume Lelarge \& Stephane Schildknecht \& Jean\-Paul Argudo \& Jan Kester \& Paolo Mattioli \& Mike Wilhelm\-hiltz \& Jefferson Medeiros \& Ian Boston \& Thomas Wegner \& Andreas Haumer \& Marco Lombardo \& Adam Sah and Zedo Inc \& Antonios Christofide and National Technical University of Athens \& Josian Larcheveque \& Stephane Silly \& David Cotter \- Alatto Technologies Ltd \& Wojciech Szenajch \& Richard Chen \& Sergio Freire \& Matt Miller \& Rene Bentzen \& Schnabl Andrea \& Ugo Brunel \- Bull \& Bernd Helmle \- credativ GmbH \& Peter Eisentraut \& Marc Cousin \& Daniel Scott \& Luca DallOlio \& Ali Pouya \& Olivier Mazain \& Brendan Richards \& Andrea Agosti \& Reto Buchli (WSL IT) \& Leonardo Cezar \& Herve Girres \& Daniel Scott \& Alexander Korotkov \& Philippe Rimbault \& Sam Nelson \& Krasi Zlatev \& Henk Enting .Ve .PP and all others who help me to build a useful and reliable product: .PP .Vb 10 \& Jason Servetar \& Jean\-Francois Ripouteau \& Octavi Fors \& Adriano Bonat \& Thomas Reiss \& Bozkurt Erkut from SONY \& Igor MII \& Julian Moreno Patino \- Debian Maintainer \& Mathieu Wingel \& Mindy Markowitz \& Jehan Guillaume de Rorthais \& Aaron Culich \& Sriram Chandrasekaran \& ... .Ve