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Are you getting ORA-04091?
oerr ORA 04091
04091, 00000, "table %s.%s is mutating, trigger/function may not see it"
// *Cause: A trigger (or a user defined plsql function that is referenced in
// this statement) attempted to look at (or modify) a table that was
// in the middle of being modified by the statement which fired it.
// *Action: Rewrite the trigger (or function) so it does not read that table.
http://asktom.oracle.com/tkyte/Mutate/index.html
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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