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Much of the instance time is spent waiting for a lock on the cluster.
|     Description  |   |
|     What to do next  |        Examine the lock for the statement   in the Activity workspace.  |   
|     Advice  |        To reduce the lock wait for the   table, consider the following solutions: n   Check if the lock appears in the Current workspace. If so,   examine the lock chain to discover the statement holding the lock. n   Try to identify the locking statement in the Activity   workspace, using narrow time frames that match the lock periods. Focus on the   locked table and associated statements. The immediate suspect is the DML   statements (and update queries) that are not waiting for locks.  |   
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