ORA-04930 open sequence number failed or initial state is valid
Oracle Database Error Code Messages ORA-04930 Help About Description;
Open sequence number failed or initial state is valid.
Cause for Error and Problem;
Either Shared Sequence Number operating system component was not installed properly, or an MC hardware failure may have occurred or a previous instance was not shut down properly.
How to Solve; ORA-04930 open sequence number failed or initial state is valid?
Action for Solve and Fix Ora-04930;
Verify that there are no background or foreground Oracle processes from a previous instance on this node using the operating system command ps -ef | grep instance_name. Verify that there are no shared memory segments belonging to the user which owns the Oracle installation by issuing the ipcs -b operating system command. If there are shared memory segments or processes still on the system, use SVRMGRL to shut down the instance with the abort option. If the instance is not up, verify that the cluster software and/or the hardware is installed and working. Log in as superuser and issue the CNXSHOW command. Are all of the nodes in the cluster listed? Are they members of the cluster? Is the communications between nodes okay? If the answer to any of these questions is false, contact Digital's customer support organization.
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