开启归档之后，您可以通过视图查看归档进度。

系统租户查看集群中所有租户的归档进度

sys 租户可以通过  oceanbase.CDB_OB_ARCHIVELOG 视图查看集群中所有租户的归档进度。

1. 使用  root 用户登录数据库的  sys 租户。

2. 执行以下语句，查看日志归档进度。

   obclient> SELECT * FROM oceanbase.CDB_OB_ARCHIVELOG\G
   *************************** 1. row ***************************
                      TENANT_ID: 1002
                        DEST_ID: 2
                       ROUND_ID: 2
                    INCARNATION: 1
                        DEST_NO: 0
                         STATUS: DOING
                      START_SCN: 1655697600000000000
              START_SCN_DISPLAY: 2022-06-20 12:00:00.000000
                 CHECKPOINT_SCN: 1655769600000000000
         CHECKPOINT_SCN_DISPLAY: 2022-06-21 08:00:00.000000
                     COMPATIBLE: 1
                  BASE_PIECE_ID: 4
                  USED_PIECE_ID: 4
          PIECE_SWITCH_INTERVAL: 1d
                    INPUT_BYTES: 16106127360
            INPUT_BYTES_DISPLAY: 15.00GB
                   OUTPUT_BYTES: 7516192768
           OUTPUT_BYTES_DISPLAY: 7.00GB
              COMPRESSION_RATIO: 1.00
            DELETED_INPUT_BYTES: 0
    DELETED_INPUT_BYTES_DISPLAY: 0.00MB
           DELETED_OUTPUT_BYTES: 0
   DELETED_OUTPUT_BYTES_DISPLAY: 0.00MB
                        COMMENT:
                           PATH: file:///data/nfs/backup/archive
   *************************** 2. row ***************************
                      TENANT_ID: 1004
                        DEST_ID: 1
                       ROUND_ID: 1
                    INCARNATION: 1
                        DEST_NO: 0
                         STATUS: DOING
                      START_SCN: 1655658000000000000
              START_SCN_DISPLAY: 2022-06-20 01:00:00.000000
                 CHECKPOINT_SCN: 1655769600000000000
         CHECKPOINT_SCN_DISPLAY: 2022-06-21 08:00:00.000000
                     COMPATIBLE: 1
                  BASE_PIECE_ID: 1
                  USED_PIECE_ID: 2
          PIECE_SWITCH_INTERVAL: 1d
                    INPUT_BYTES: 161061273600
            INPUT_BYTES_DISPLAY: 150.00GB
                   OUTPUT_BYTES: 32212254720
           OUTPUT_BYTES_DISPLAY: 30.00GB
              COMPRESSION_RATIO: 1.00
            DELETED_INPUT_BYTES: 0
    DELETED_INPUT_BYTES_DISPLAY: 0.00MB
           DELETED_OUTPUT_BYTES: 0
   DELETED_OUTPUT_BYTES_DISPLAY: 0.00MB
                        COMMENT:
                           PATH: oss://oceanbase-test-bucket/backup/archive?host=xxx.aliyun-inc.com
   2 row in set

   上面的示例中，当前集群中有租户 ID 为  1002 和  1004 的 2 个租户正在归档。

   1002 租户的  round_id 是 2，表明是第二次开启归档，归档介质的类型是  NFS，路径是  /data/nfs/backup/archive。自开启归档以来共产生了 1 个 Piece，  piece id 是 4，已归档日志的范围是  '2022-06-20 12:00:00.000000' ~  '2022-06-21 08:00:00.000000'，原始日志数据量是  15GB ，经过压缩之后的实际归档数据量是  7GB ，压缩率是 2.14。

   1004 租户的  round_id 是  1，表明是首次开启归档，归档介质的类型是  OSS，存储桶是  oceanbase-test-bucket ，路径是  /backup/archive 。 自开启归档以来共产生了 2 个 Piece，  piece id 分别是  1 和  2，已归档日志的范围是  '2022-06-20 01:00:00.000000' ~  '2022-06-21 08:00:00.000000' ，原始日志数据量是  150GB ，经过压缩之后的实际归档数据量是  30GB ，压缩率是 5。

更多  CDB_OB_ARCHIVELOG 视图的说明，请参见  CDB_OB_ARCHIVELOG。

用户租户查看当前租户的归档进度

用户租户可以通过  oceanbase.DBA_OB_ARCHIVELOG 视图（MySQL 模式）和  sys.DBA_OB_ARCHIVELOG 视图（Oracle 模式）查看本租户的归档进度。

1. 用户租户的租户管理员登录到对应的租户。

   说明

   MySQL 租户的管理员用户为  root 用户，Oracle 租户的管理员用户为  SYS 用户。

2. 执行以下语句，查看当前租户的日志归档进度。

   MySQL 租户查看本租户所有 Piece 的示例如下：

   obclient> SELECT * FROM oceanbase.DBA_OB_ARCHIVELOG\G
   *************************** 1. row ***************************
                        DEST_ID: 2
                       ROUND_ID: 2
                    INCARNATION: 1
                        DEST_NO: 0
                         STATUS: DOING
                      START_SCN: 1655697600000000000
              START_SCN_DISPLAY: 2022-06-20 12:00:00.000000
                 CHECKPOINT_SCN: 1655769600000000000
         CHECKPOINT_SCN_DISPLAY: 2022-06-21 08:00:00.000000
                     COMPATIBLE: 1
                  BASE_PIECE_ID: 4
                  USED_PIECE_ID: 4
          PIECE_SWITCH_INTERVAL: 1d
                    INPUT_BYTES: 16106127360
            INPUT_BYTES_DISPLAY: 15.00GB
                   OUTPUT_BYTES: 16106127360
           OUTPUT_BYTES_DISPLAY: 15.00GB
              COMPRESSION_RATIO: 1.00
            DELETED_INPUT_BYTES: 0
    DELETED_INPUT_BYTES_DISPLAY: 0.00MB
           DELETED_OUTPUT_BYTES: 0
   DELETED_OUTPUT_BYTES_DISPLAY: 0.00MB
                        COMMENT:
                           PATH: file:///data/nfs/backup/archive
   1 row in set

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