Ubuntu Manpage: tracker-store - database indexer and query daemon

Provided by: tracker_0.16.5-0ubuntu0.2_amd64

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 \n
separated 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_LOG_FILES
Don't just log to stdout and stderr, but to log files too which are kept in
$HOME/.local/share/tracker/. This came into effect in 0.15.3 and 0.16.0. After this version of
Tracker, logging to file (usually useful for debugging) can only be done by declaring this
environment variable.

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