Answer / guest

Cause: The HANDLER_NAME in the CONNECT_DATA was not found in
the listener's tables for the specified SERVICE_NAME and
INSTANCE_NAME.

Action: Check to make sure that the HANDLER_NAME specified
is correct.

Please add more information about this Error

NCR-01020: NCRS: Operation would block.

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PLS-00202: type 'string' must be declared

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NNF-00540: Failed to insert name: string

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ORA-29957: cannot create a function-based domain index on a string table

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