Oracle® Database Backup and Recovery Reference 11g Release 2 (11.2) Part Number E10643-06 |
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PDF · Mobi · ePub |
This view contains historical information about archived and unarchived redo log files. It corresponds to the V$ARCHIVED_LOG
view in the target database control file.
Oracle inserts an archived redo log record after the online redo log is successfully archived. If a log that has not been archived is cleared, then a record is inserted with the NAME
column set to NULL
.
If the log is archived multiple times, then the view contains multiple archived log records with the same THREAD#
, SEQUENCE#
, and RESETLOGS_CHANGE#
, but with a different name.
An archived log record is also inserted when an archived log is restored from a backup set or a copy.
An archived log can have no record if the record ages out of the control file.
Column | Data Type | Description |
---|---|---|
DB_KEY |
NUMBER |
The primary key for this database in the recovery catalog. Use this column to join with almost any other catalog view. |
DBINC_KEY |
NUMBER |
The primary key for the incarnation of the target database to which this record belongs. Use this column to join with RC_DATABASE_INCARNATION . |
DB_NAME |
VARCHAR2(8) |
The DB_NAME of the database incarnation to which this record belongs. |
AL_KEY |
NUMBER |
The primary key of the archived redo log in the recovery catalog. If you issue the LIST command while RMAN is connected to the recovery catalog, then this value appears in the KEY column of the output. |
RECID |
NUMBER |
The archived redo log RECID from V$ARCHIVED_LOG . RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. |
STAMP |
NUMBER |
The archived redo log stamp from V$ARCHIVED_LOG . RECID and STAMP form a concatenated primary key that uniquely identifies this record in the target database control file. |
NAME |
VARCHAR2(1024) |
The file name of the archived redo log. |
THREAD# |
NUMBER |
The number of the redo thread. |
SEQUENCE# |
NUMBER |
The log sequence number. |
RESETLOGS_CHANGE# |
NUMBER |
The SCN of the most recent RESETLOGS when the record was created. |
RESETLOGS_TIME |
DATE |
The time stamp of the most recent RESETLOGS when the record was created. |
FIRST_CHANGE# |
NUMBER |
The first SCN of this redo log. |
FIRST_TIME |
DATE |
The time when Oracle switched into the redo log. |
NEXT_CHANGE# |
NUMBER |
The first SCN of the next redo log in the thread. |
NEXT_TIME |
DATE |
The first time stamp of the next redo log in the thread. |
BLOCKS |
NUMBER |
The size of this archived log in operating system blocks. |
BLOCK_SIZE |
NUMBER |
The size of the block in bytes. |
COMPLETION_TIME |
DATE |
The time when the redo log was archived or copied. |
ARCHIVED |
VARCHAR2(3) |
Indicates whether the log was archived: YES (archived redo log) or NO (inspected file header of online redo log and added record to V$ARCHIVED_LOG ). Inspecting the online logs creates archived log records for them, which allows them to be applied during RMAN recovery. Oracle sets ARCHIVED to NO to prevent online logs from being backed up. |
STATUS |
VARCHAR2(1) |
The status of the archived redo log: A (available), U (unavailable), D (deleted), or X (expired). |
IS_STANDBY |
VARCHAR2(3) |
The database that archived this log: Y (belongs to a standby database) or N (belongs to the primary database). |
DICTIONARY_BEGIN |
VARCHAR2(3) |
Indicates whether this archived log contains the start of a LogMiner dictionary: YES or NO .
If both |
DICTIONARY_END |
VARCHAR2(3) |
Indicates whether this archived log contains the end of a LogMiner dictionary: YES or NO . See the description of DICTIONARY_BEGIN for an explanation of how to interpret this value. |
IS_RECOVERY_DEST_FILE |
VARCHAR2(3) |
This copy is located in the fast recovery area: YES or NO . |
COMPRESSED |
VARCHAR2(3) |
Internal only |
CREATOR |
VARCHAR2(7) |
Creator of the archived redo log:
|
TERMINAL |
VARCHAR2(3) |
Indicates whether this log was created during terminal recovery of a standby database. Values are YES or NO . |
SITE_KEY |
NUMBER |
Primary key of the Data Guard database associated with this file. Each database in a Data Guard environment has a unique SITE_KEY value. You can use SITE_KEY in a join with the RC_SITE view to obtain the DB_UNIQUE_NAME of the database. |