Note
This view was introduced in OceanBase Database V4.2.5.
Purpose
The GV$OB_LOG_TRANSPORT_DEST_STAT view displays the information about downstream log synchronization links (OceanBase Change Data Capture, obcdc for short, or a standby tenant) of all OBServer nodes in the current tenant.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The ID of the tenant. |
| SVR_IP | varchar(46) | NO | The IP address of the OBServer node. |
| SVR_PORT | bigint(20) | NO | The remote procedure call (RPC) port number of the OBServer node. |
| LS_ID | bigint(20) | NO | The log stream ID of the request. |
| CLIENT_IP | varchar(46) | NO | The IP address of the OBServer node where the client process resides. |
| CLIENT_PID | bigint(20) | NO | The ID of the client process. |
| CLIENT_TENANT_ID | bigint(20) | NO | The tenant ID of the client. |
| CLIENT_TYPE | varchar(7) | NO | The type of the client. Valid values:
|
| START_SERVE_TIME | timestamp(6) | NO | The time when the record was created. |
| LAST_SERVE_TIME | timestamp(6) | NO | The time when the record was last modified. |
| LAST_READ_SOURCE | varchar(7) | NO | The source of logs that were read during the last request processing. Valid values:
|
| LAST_REQUEST_TYPE | varchar(24) | NO | The RPC type of the last request. Valid values:
|
| LAST_REQUEST_LOG_LSN | bigint(20) unsigned | NO | The log sequence number (LSN) of the last request. |
| LAST_REQUEST_LOG_SCN | bigint(20) unsigned | NO | The log system change number (SCN) of the last request. |
| LAST_FAILED_REQUEST | longtext | NO | The RPC information of the last failure, such as the sending time, trace ID, and error code. |
| AVG_REQUEST_PROCESS_TIME | bigint(20) | NO | The average RPC processing time. |
| AVG_REQUEST_QUEUE_TIME | bigint(20) | NO | The average RPC queuing time. |
| AVG_REQUEST_READ_LOG_TIME | bigint(20) | NO | The average RPC log read time. |
| AVG_REQUEST_READ_LOG_SIZE | bigint(20) | NO | The average RPC log read size. |
| AVG_LOG_TRANSPORT_BANDWIDTH | varchar(29) | NO | The average log transport bandwidth. |
Sample query
Query the information about downstream log synchronization links (obcdc or a standby tenant) of all OBServer nodes in the current tenant.
obclient [oceanbase]> SELECT * FROM oceanbase.GV$OB_LOG_TRANSPORT_DEST_STAT;
The query result is as follows:
+-----------+----------------+----------+-------+----------------+------------+------------------+-------------+----------------------------+----------------------------+------------------+--------------------------+----------------------+----------------------+---------------------+--------------------------+------------------------+---------------------------+---------------------------+-----------------------------+
| TENANT_ID | SVR_IP | SVR_PORT | LS_ID | CLIENT_IP | CLIENT_PID | CLIENT_TENANT_ID | CLIENT_TYPE | START_SERVE_TIME | LAST_SERVE_TIME | LAST_READ_SOURCE | LAST_REQUEST_TYPE | LAST_REQUEST_LOG_LSN | LAST_REQUEST_LOG_SCN | LAST_FAILED_REQUEST | AVG_REQUEST_PROCESS_TIME | AVG_REQUEST_QUEUE_TIME | AVG_REQUEST_READ_LOG_TIME | AVG_REQUEST_READ_LOG_SIZE | AVG_LOG_TRANSPORT_BANDWIDTH |
+-----------+----------------+----------+-------+----------------+------------+------------------+-------------+----------------------------+----------------------------+------------------+--------------------------+----------------------+----------------------+---------------------+--------------------------+------------------------+---------------------------+---------------------------+-----------------------------+
| 1002 | xx.xx.xx.xx | 9708 | 1 | xx.xx.xx.xx | 44307 | 0 | CDC | 2024-10-17 17:09:04.517703 | 2024-10-17 17:55:20.038397 | ONLINE | SEQUENTIAL_READ_SERIAL | 21124433 | 1729158919728184002 | NULL | 81 | 46 | 49 | 70 | 1.35KB/S |
| 1002 | xx.xx.xx.xx | 9708 | 1001 | xx.xx.xx.xx | 79983 | 1004 | STANDBY | 2024-10-17 17:08:10.964547 | 2024-10-17 17:55:20.092669 | ONLINE | SEQUENTIAL_READ_PARALLEL | 3493888 | 1729158919728184003 | NULL | 6 | 32 | 5 | 2102 | 41.06KB/S |
| 1002 | xx.xx.xx.xx | 9708 | 1001 | xx.xx.xx.xx | 44307 | 0 | CDC | 2024-10-17 17:09:05.936290 | 2024-10-17 17:55:20.038823 | ONLINE | SEQUENTIAL_READ_SERIAL | 3495484 | 1729158919728184002 | NULL | 83 | 33 | 51 | 61 | 1.19KB/S |
| 1002 | xx.xx.xx.xx | 9708 | 1 | xx.xx.xx.xx | 79983 | 1004 | STANDBY | 2024-10-17 17:08:00.415960 | 2024-10-17 17:55:20.092586 | ONLINE | SEQUENTIAL_READ_PARALLEL | 21123072 | 1729158919728184003 | NULL | 5 | 34 | 5 | 2257 | 44.09KB/S |
+-----------+----------------+----------+-------+----------------+------------+------------------+-------------+----------------------------+----------------------------+------------------+--------------------------+----------------------+----------------------+---------------------+--------------------------+------------------------+---------------------------+---------------------------+-----------------------------+
4 rows in set (0.01 sec)