Symptom
I have performed a bare metal recovery of an Oracle server. The memory size of the target machine is less than the source Oracle server and the Oracle database uses AMM (Automatic Memory Management). Ater BMR, when I start the Oracle database instance, I get the following error:
Solution
To resolve this error, increase the size of the shared memory virtual file system.
Follow these steps:
# df -k /dev/shm Filesystem 1K-blocks Used Available Use% Mounted on tmpfs 510324 88 510236 1% /dev/shm
# mount -o remount,size=1200m /dev/shm
tmpfs /dev/shm tmpfs size=1200m 0 0
Note: The shared memory virtual file system size should be big enough to accommodate the MEMORY_TARGET and MEMORY_MAX_TARGET values. For more information on the variables, refer to the Oracle documentation.
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