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Control File Size…
Size can dynamically grow
- Log switches and archiving can add many records
- Empty slots can fill up quickly
More records added if necessary
- If existing records not expired
- Limit = 65535 log switch records
- Will start to overwrite non-expired records
- Warnings given
Does not automatically shrink
Notes:
The size of the control file will grow in size because of the RMAN data.
If new information needs to be recorded, and all the available slots have been used, RMAN will do one of the following:
If there are expired records, RMAN will overwrite the expired records. No warnings are given.
If there are no expired records, RMAN will allocate more. This will cause the size of the file to grow. No warnings are given.
If the LOG HISTORY and/or ARCHIVED LOG section has reached its maximum of 65,535 records AND there are no expired records, Oracle will begin to overwrite non-expired records, starting at the oldest record. Warnings are produced in the alert log.