SESSION IS WAITIING ON ROW BUT THE ROW IS UPDATABLE BY OTHER SESSIONS (Doc ID 749395.1)

Last updated on MARCH 24, 2015

Applies to:

Oracle Server - Enterprise Edition - Version: 10.2.0.3 and later   [Release: 10.2 and later ]
Information in this document applies to any platform.

Symptoms

In some cases ,  one or more sessions are waiting for TX-enqueue mode=X when trying to update row1 in a table.  The blocking  session is holding  the TX-enqueue in mode X, while row1  is not actually locked by the blocker.  Other sessions can update the row and commit/rollback without problems.

Cause

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