1.55 CONTROL_FILE_RECORD_KEEP_TIME
CONTROL_FILE_RECORD_KEEP_TIME
specifies the minimum number of days before a reusable record in the control file can be reused.
Property | Description |
---|---|
Parameter type |
Integer |
Default value |
|
Modifiable |
|
Modifiable in a PDB |
No |
Range of values |
|
Basic |
No |
In the event a new record must be added to a reusable section and the oldest record has not aged enough, the record section expands. If this parameter is set to 0, then reusable sections never expand, and records are reused as needed.
If the number of reusable records in the control file exceeds the circular reuse record limit UB4MAXVAL
, then reusable records will be overwritten even if CONTROL_FILE_RECORD_KEEP_TIME
has not elapsed. UB4MAXVAL
is defined in the oratypes
.h
header file, which is found in the public
directory. Its value may vary according to the operating system you are using.
Note:
This parameter applies only to records in the control file that are circularly reusable (such as archive log records and various backup records). It does not apply to records such as data file, tablespace, and redo thread records, which are never reused unless the corresponding object is dropped from the tablespace.
See Also:
-
Oracle Database Backup and Recovery User’s Guide for more information about this parameter