04020-04029: Library Object Lock Messages

This section lists messages generated when a library object is locked and cannot be accessed.

ORA-04020: deadlock detected while trying to lock object name

Cause: While trying to lock a library object, a deadlock is detected.

Action: Retry the operation later.

ORA-04021: time-out occurred while waiting to lock object name

Cause: While trying to lock a library object, a time-out occurred.

Action: Retry the operation later.

ORA-04022: no wait requested, but had to wait to lock dictionary object

Cause: Had to wait to lock a library object during a nowait request.

Action: Retry the operation later.

ORA-04028: cannot generate diana for object name

Cause: A lock conflict prevented the generation of diana for an object.

Action: Check the syntax. If no syntax errors are found, report this error to Oracle World Wide Support.

For more information about locks, see the index entry on "lock" in Oracle8 Server SQL Reference.

ORA-04029: error ORA-num occurred when querying name

Cause: The table or view being queried might be missing. Look up the ORA-num indicated in the message.

Action: Fix the error.

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