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TNS-12549/ORA-12549: TNS:operating system resource quota exceeded and TNS-00519: Operating system resource quota exceeded
Cause: A quota or hard limit imposed by the operating system has been exceeded.
Possible limits include:
The maximum number of processes allowed for a single user
The operating system is running low on paging space
Action: Perform the appropriate action:
Increase the number of processes by setting the PROCESSES parameter in the database initialization file to a larger value.
Check the sqlnet.log or listener.log file for detailed error stack information, such as an operating system error code to help identify which quota has been exceeded.