ORA-00060
From Oracle FAQ
ORA-00060: Deadlock detected while waiting for resource
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What causes this error?
Transactions deadlock one another waiting for resources. Oracle detected it and roled back your statement to allow the other party to continue. The statement (fired from a session) which is been rolled back will experience this error.
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How to fix it
Look at the trace file to see the transactions and resources involved. Retry if necessary.
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