This view displays the Palf status information.
Notice
Common scenarios:
- Query whether a log stream has a leader.
- Query the member list (number of Paxos replicas) of a log stream.
- Query the replica synchronization status.
- Query the recyclable checkpoint of the logs of a log stream.
- Query the log consumption service scope of a log stream based on the log sequence number (LSN) or system change number (SCN).
- Query the access mode of Palf.
- Other troubleshooting scenarios.
Fields
| Field | Type | Nullable | Description |
|---|---|---|---|
| TENANT_ID | NUMBER(38) | NO | The ID of the tenant. |
| LS_ID | NUMBER(38) | NO | The log stream ID. |
| SVR_IP | VARCHAR2(46) | NO | The IP address of the OBServer. |
| SVR_PORT | NUMBER(38) | NO | The port number of the OBServer. |
| ROLE | VARCHAR2(32) | NO | The role of the replica. Valid values: |
| PROPOSAL_ID | NUMBER(38) | NO | The proposal ID of Paxos. |
| CONFIG_VERSION | VARCHAR2(128) | NO | The version number corresponding to the configuration change, such as modifying the member list, modifying the number of replicas, and modifying the access mode. |
| ACCESS_MODE | VARCHAR2(32) | NO | The access mode. Valid values: |
| PAXOS_MEMBER_LIST | VARCHAR2(1024) | NO | The list of Paxos members. |
| PAXOS_REPLICA_NUM | NUMBER(38) | NO | The number of Paxos replicas. |
| ALLOW_VOTE | VARCHAR2(3) | NO | Indicates whether to allow to vote in log synchronization. Valid values: |
| IN_SYNC | VARCHAR2(3) | NO | Indicates whether the replica is completely synchronized with the leader. |
| REPLICA_TYPE | VARCHAR2(32) | NO | The replica type. Valid values: |
| BASE_LSN | NUMBER(38) | NO | The maximum recyclable checkpoint. |
| BEGIN_LSN | NUMBER(38) | NO | The LSN of the minimum consumption checkpoint. |
| BEGIN_SCN | NUMBER(38) | NO | The SCN of the minimum consumption checkpoint. |
| END_LSN | NUMBER(38) | NO | The LSN of the maximum consecutive majority checkpoint, also known as the maximum consumption checkpoint. |
| END_SCN | NUMBER(38) | NO | The SCN of the maximum consecutive majority checkpoint, also known as the maximum consumption checkpoint. |
| MAX_LSN | NUMBER(38) | NO | The LSN of the maximum write point. |
| MAX_SCN | NUMBER(38) | NO | The SCN of the maximum write point. |