Oracle® Database 8i | 9i | 10g | 11g | 12c | 18c | 19c Error Codes

Information for Database Error Code ORA-12521: TNS:listener does not currently know of instance requested in connect descriptor
Oracle® Database Error ORA-1252116/14

ORA-12521: TNS:listener does not currently know of instance requested in connect descriptor

Cause: The listener received a request to establish a connection to a database or other service. The connect descriptor received by the listener specified in addition to the service name an instance name for an instance (usually a database instance) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener.

Action:

Error Type: ORA

Oracle® Database Error Codes 8i | 9i | 10g | 11g | 12c | 18c | 19c

Record: 1/1

Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners

Oracle: Registered trademark of Oracle