Purpose
The DBA_OB_ARCHIVELOG_PIECE_FILES view displays the status of backup pieces in each backup set.
Note
This view is introduced since OceanBase Database V4.0.0.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| DEST_ID | NUMBER(38) | NO | The path ID. The system allocates a unique ID to each specified path. |
| ROUND_ID | NUMBER(38) | NO | The Nth complete clog backup data flow. |
| PIECE_ID | NUMBER(38) | NO | The ID of the log backup piece. |
| INCARNATION | NUMBER(38) | NO | The Nth incarnation of the database after the Flashback Database operation. |
| DEST_NO | NUMBER(38) | NO | The log archive destination number. For example, the destination number of log_archive_dest is 0, and that of log_archive_dest_1 is 1. |
| STATUS | VARCHAR2(64) | NO | The status of the piece when the log is split. Valid values:ACTIVE: The backup piece is active.FREEZING: The backup piece is being frozen.FROZEN: The backup piece is frozen. The status of a frozen piece no long changes. |
| START_SCN | NUMBER(38) | NO | The start checkpoint of the piece. |
| START_SCN_DISPLAY | TIMESTAMP(9) | NO | The value of START_SCN after being converted into the unit of time. |
| CHECKPOINT_SCN | NUMBER(38) | NO | The current archive checkpoint. |
| CHECKPOINT_SCN_DISPLAY | TIMESTAMP(9) | NO | The value of CHECKPOINT_SCN after being converted into the unit of time. |
| MAX_SCN | NUMBER(38) | NO | The maximum archive checkpoint. |
| END_SCN | NUMBER(38) | NO | The theoretical end checkpoint of the piece. |
| COMPATIBLE | NUMBER(38) | NO | The version number compatible with log archiving. |
| UNIT_SIZE | NUMBER(38) | NO | The size of the log block into which archived log data is compressed or encrypted. At present, this column is not supported. |
| COMPRESSION | VARCHAR2(128) | NO | The compression algorithm. Valid values:
|
| INPUT_BYTES | NUMBER(38) | NO | The volume of raw data. |
| INPUT_BYTES_DISPLAY | VARCHAR2(42) | NO | The value of INPUT_BYTES after unit conversion. |
| OUTPUT_BYTES | NUMBER(38) | NO | The data volume after encryption and compression. |
| OUTPUT_BYTES_DISPLAY | VARCHAR2(42) | NO | The value of OUTPUT_BYTES after unit conversion. |
| COMPRESSION_RATIO | NUMBER | NO | The compression ratio. |
| FILE_STATUS | VARCHAR2(64) | NO | The file status of the backup piece. Valid values:AVAILABLE: indicates a valid backup that can be used for restore.COPYING: indicates that the log file is being backed up.INCOMPLETE: indicates that only a portion of the log file has been copied. This status is applicable only in regular secondary backup of log backups. The value of checkpoint_ts for the copy is earlier than that for the original backup, and the copy can be used for restoring the file to a point in time before the value of checkpoint_ts of the copy.DELETING: indicates that the log file is being deleted.EXPIRED: indicates that the backup file has expired.BROKEN: indicates that the backup file is incomplete and cannot be used.DELETED: indicates that the log file has been deleted. |
| PATH | VARCHAR2(2048) | NO | The archive path. |
