I needed to add a new database to test some BACKUP/RESTORE commands.
I selected a Custom Database
I used the same ASM disk groups available for an already active database.
I want to give 40% of available memory to SGA and PGA
I increased the number of processes.
Oracle 11g is using a new mechanism for managing shared memory: you need to configure large enough tmpfs on /dev/shm device to fit all requested memory up to MEMORY_MAX_TARGET.
To solve this problem you should correct as follow:
# umount tmpfs
# mount -t tmpfs shmfs -o size=3200m /dev/shm
# mount -t tmpfs shmfs -o size=3200m /dev/shm
The same alert on dbca log
To by-pass this error I reduced the amount of memory requested during this setup
The new database is now available to be used.
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