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Re: How to optimize the query: msg#00227apache.db.derby.devel
David Zonsheine wrote: We tried to see the index usage but couldn't.did you try to set the property derby.language.logQueryPlan=true in your derby.properties file or you can also set it as a java property -Dderby.language.logQueryPlan=true This property when set will print the query plans in derby.log If an index is used, you will be able to see IndexScan ResultSet.... an example : here my tablename is SCANFIXED and index is SCANFIXEDX... [snip] Index Scan ResultSet for SCANFIXED using index SCANFIXEDX at read committed isolation level using instantaneous share row locking chosen by the optimizer [snip] Sunitha.
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