ORA-12500: TNS:listener failed to start a dedicated server
process



ORA-12500: TNS:listener failed to start a dedicated server process..

Answer / guest

Cause: The process of starting up a dedicated server process
failed. The executable could not be found or the environment
may be set up incorrectly.

Action: Turn on tracing at the ADMIN level and reexecute the
operation. Verify that the ORACLE Server executable is
present and has execute permissions enabled. Ensure that the
ORACLE environment is specified correctly in LISTENER.ORA.
The Oracle Protocol Adapter that is being called may not be
installed on the local hard drive. Please check that the
correct Protocol Adapter are successfully linked. If error
persists, contact Oracle Customer Support.

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