The Apache Jena SDB module has been retired and is no longer supported.
The last release of Jena with this module was Apache Jena 3.17.0.
Tune your database
Database performance depends on the database being tuned. Some databases default to “developer setup” which does not use much of the RAM but is only for functional testing.
Improving loading rates
For a large bulk load into an existing store, dropping the indexes, doing the load and then recreating the indexes can be noticeably faster.
sdbconfig --drop
sdbload file
sdbconfig --index
For a large bulk load into a new store, just format it, and not create the indexes, do the load and then recreating the indexes can be noticeably faster.
sdbconfig --format
sdbload --time file
sdbconfig --index