NAME¶
tracker-store - database indexer and query daemon
SYNOPSIS¶
tracker-store [
OPTION...]
DESCRIPTION¶
tracker-store provides both a powerful database daemon which allows
clients to query or update their data using the highly descriptive
SPARQL language.
tracker-store does not do any file crawling or any mining of data itself,
instead other processes do that and serves as a daemon waiting for such
requests from application miners like
tracker-miner-fs.
OPTIONS¶
- -?, --help
- A brief help message including some examples.
- -V, --version
- Returns the version of this binary.
- -v, --verbosity={0|1|2|3}
- Sets the logging level, 0=errors, 1=minimal, 2=detailed,
3=debug.
- -r, --force-reindex
- This forces tracker-store to remove databases and to
recreate fresh databases ready for data insertion from the miners. For
more information about the miners, see tracker-miner-fs.
- -m, --low-memory
- This changes the behavior of the database manager and some
other parts of tracker-store to be optimized for lower memory
systems by lowering database connection cache sizes and page sizes for
example. This may slow down indexing performance.
- -n, --readonly-mode
- This starts tracker-store in a mode which disables
writing to the database. Only SPARQL read requests can be serviced
if this option is used.
ENVIRONMENT¶
- TRACKER_DB_ONTOLOGIES_DIR
- This is the directory which tracker uses to load the
.ontology files from. If unset it will default to the correct place. This
is used mainly for testing purposes.
- TRACKER_LANGUAGE_STOP_WORDS_DIR
- This is the directory which tracker uses to load the stop
words dictionaries from. If unset it will default to the correct place.
This is used mainly for testing purposes.
- TRACKER_STORE_MAX_TASK_TIME
- This is maximum time allowed for a process to finish before
interruption happens. The actual moment of interruption depends also on
the frequency of checks. The value 0 indicates no interruption. This
environment variable is used mainly for testing purposes.
- TRACKER_STORE_SELECT_CACHE_SIZE /
TRACKER_STORE_UPDATE_CACHE_SIZE
- Tracker caches database statements which occur frequently
to make subsequent repeat queries much faster. The cache size is set to
100 by default for each type (select and update queries). This must be at
least 2 as a minimum, any less and a value of 3 is used instead. The
number represents the number of cached statements to keep around. This
environment variable is used mainly for testing purposes.
- TRACKER_PRAGMAS_FILE
- Tracker has a fixed set of PRAGMA settings for creating its
SQLite connection. With this environment variable pointing to a text file
you can override these settings. The file is a 0separated list of SQLite
queries to execute on any newly created SQLite connection in
tracker-store.
- TRACKER_DISABLE_MEEGOTOUCH_LOCALE
- If Tracker is compiled with meegotouch locale management
support, setting this variable in the environment will disable retrieving
the locale from GConf, and the standard locale settings will be used
instead.
TRACKER_USE_CONFIG_FILES Don't use GSettings, instead use a config
file similar to how settings were saved in 0.10.x. That is, a file which
is much like an .ini file. These are saved to $HOME/.config/tracker/
NOTES¶
tracker-store is highly bound to the D-Bus freedesktop project. A D-Bus
session is needed for all Tracker processes to communicate between each other.
D-Bus is our acting IPC. See
dbus-daemon(1) for more information.
SEE ALSO¶
tracker-applet(1),
tracker-search-tool(1),
tracker-search(1),
tracker-tag(1),
tracker-stats(1),
tracker-services(1),
tracker-info(1),
tracker-control(1),
http://www.w3.org/TR/rdf-sparql-query/
dbus-daemon(1),
http://www.freedesktop.org/wiki/Software/dbus