合 【MOS】Troubleshooting Shutdown Immediate Normal Hang Issues (Doc ID 1906014.1)
In this Document
Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
The goal of this document is diagnosing the different scenarios when shutdown normal/immediate hangs
A- SMON disabling TX Recovery
In the alert.log, you see only the following.. There are no ORA- errors or trace files generated.
Shutting down instance (immediate)
License high water mark = 12
Thu Dec 8 18:43:16 1994
alter database close normal
Thu Dec 8 18:43:17 1994
SMON: disabling tx recovery
SMON: disabling cache recovery
waiting for smon to disable tx recovery
During a SHUTDOWN IMMEDIATE and SHUTDOWN NORMAL, SMON is cleaning up extents which are no longer needed and marking them as freed.
Solution: Either wait for SMON to clean up the free extents in the database as it shuts down or perform a SHUTDOWN ABORT to shutdown the instance.
NOTE: A SHUTDOWN ABORT will not perform a clean shutdown.