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ORA-00023 ORA-00024 ORA-00025

ORA-00023: session references process private memory; cannot detach session

Cause: An attempt was made to detach the current session when it contains references to process private memory.

Action: A session may contain references to process memory (PGA) if it has an open network connection, a very large context area, or operating system privileges. To allow the detach, it may be necessary to close the session’s database links and/or cursors. Detaching a session with operating system privileges is always disallowed.

ORA-00024: logins from more than one process not allowed in single-process mode

Cause: Trying to login more than once from different processes for ORACLE started in single-process mode.

Action: Logoff from the other process.

ORA-00025: failed to allocate string

Cause: Out of memory.

Action: Restart with larger sga heap.



Cause: Out of memory.

Action: Restart with larger sga heap.



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