ORA-12560
Database communication protocol error.
Cause
A lower level communication protocol adapter error occurred.
Action
Do the following:
- Check for lower level network transport errors in the error stack for additional information.
- Ensure that the protocol specification used in the address for the connection is correct.
- For further details, turn on network tracing and rerun the operation. Turn off tracing when the operation is complete.
- Contact Oracle Support.