The following is the ORA-24339 error message, you can learn the cause and solution of the Oracle database error.
ORA-24339 cannot set server group name after connecting to server
Cause: An attempt was made to set the server group in a server handle after connecting to the server. However, once the connection is established to a server, the server group name cannot be set anymore.
Solution: Attach to the server after setting the server group name in the server handle.
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