answered
2018-05-01 18:06:50 +0200
For the record: I know I've answered this question before, but I cannot recall the original question, so my answer is a duplicate for sure, but here you go,
In terminal, type this;
tracker reset
This should display the options for tracker;
[nemo@Sailfish ~]$ tracker reset
Usage:
tracker reset [OPTION...]
Help Options:
-h, --help Show help options
Application Options:
-r, --hard Kill all Tracker processes and remove all databases
-e, --soft Same as --hard but the backup & journal are restored after restart
-y, --yes Skip interactive verification for reset.
-c, --config Remove all configuration files so they are re-generated on next start
-f, --file=FILE Erase indexed information about a file, works recursively for directories
I personally tend to use; tracker reset -e
Edit cemoi71 2.05.2018: Here are some already existing links of threads done on subject (mentioned from Edz above)
https://together.jolla.com/question/182151/clearing-tracker-database/
https://together.jolla.com/question/156674/2109-re-index-mediaplayer-with-new-tracker/
More to know with tjc-search with keywords tracker
reset
...
Command tracker-control
seems to be obsolete now.