Version
All versions
Explanation
Unable to execute query.
Cause
This error occurs when the database is not connected or it is trying to handle a query while it is disconnected.
1. When executing a query while connection is lost due to a timeout policy.
2. A unique connection name is used which does not exist for the thread program.
Action
1. Shorten the processing time by increasing the session timeout or tune the query.
2. Check whether a unique connection exists when using a thread program.
Reference
N/A