Oracle Database Error Code ORA-12538 Description :
TNS:no such protocol adapter
Error Cause:
The protocol adapter requested (by way of the “(PROTOCOL=..)” keyword-value pair in a TNS address) is unknown. If the supplied address is typographically correct then the protocol adapter is not installed.
How to Solve :
Install the protocol adapter or correct typographically error, as appropriate. Note: if the supplied address was derived from resolving the service name, check the address in the appropriate file (TNSNAMES.ORA, LISTENER.ORA or SQLNET.ORA).
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