如题,这些事件我分别可以在官方文档哪里找到么?
在 OceanBase 数据库中,DBA_OB_ROOTSERVICE_EVENT_HISTORY
和 DBA_OB_SERVER_EVENT_HISTORY
是两个不同的系统视图,分别用于展示不同层面的事件历史信息。以下是它们的区别:
1. 功能描述
-
DBA_OB_ROOTSERVICE_EVENT_HISTORY
- 功能:该视图用于展示 Root Service 的事件历史记录。
- 范围:Root Service 是 OceanBase 集群的核心服务之一,负责管理集群的元数据和全局调度任务。因此,该视图记录的是与 Root Service 相关的事件,例如租户创建、资源分配、任务调度等全局性操作的历史信息。
- 参考信息:根据已知信息 [10],
DBA_OB_ROOTSERVICE_EVENT_HISTORY
展示的是 Root Service 的事件历史。
-
DBA_OB_SERVER_EVENT_HISTORY
- 功能:该视图用于展示 OBServer 节点的事件历史记录。
- 范围:OBServer 是 OceanBase 集群中的物理节点,负责存储和计算任务。该视图记录的是单个 OBServer 节点上的事件,例如节点启动、停止、故障恢复等与节点运行状态相关的事件历史。
- 参考信息:根据已知信息 [3],
DBA_OB_SERVER_EVENT_HISTORY
展示的是 OBServer 节点的事件历史信息。
2. 适用范围
-
DBA_OB_ROOTSERVICE_EVENT_HISTORY
- 适用于集群级别的事件查询,主要关注全局性的管理操作和调度任务。
- 通常由系统管理员或运维人员使用,用于排查集群级别的问题或分析全局事件。
-
DBA_OB_SERVER_EVENT_HISTORY
- 适用于节点级别的事件查询,主要关注单个 OBServer 节点的运行状态和事件记录。
- 通常由运维人员使用,用于排查特定节点的问题或分析节点级别的事件。
3. 数据来源
-
DBA_OB_ROOTSERVICE_EVENT_HISTORY
- 数据来源于 Root Service 的日志和元数据,记录的是集群级别的操作和事件。
-
DBA_OB_SERVER_EVENT_HISTORY
- 数据来源于 OBServer 节点的日志,记录的是节点级别的运行事件。
总结
视图名称 | 功能描述 | 适用范围 | 数据来源 |
---|---|---|---|
DBA_OB_ROOTSERVICE_EVENT_HISTORY |
展示 Root Service 的事件历史记录 | 集群级别 | Root Service 日志和元数据 |
DBA_OB_SERVER_EVENT_HISTORY |
展示 OBServer 节点的事件历史记录 | 节点级别 | OBServer 节点日志 |
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直接看下结果可能比较直观:
select event,count(0) from DBA_OB_ROOTSERVICE_EVENT_HISTORY group by event order by 2 desc;
+-------------------------------+----------+
| event | count(0) |
+-------------------------------+----------+
| batch_recycle_by_table | 50525 |
| check_backup_task_alive | 15408 |
| batch_recycle_by_tenant | 2021 |
| switch_state | 1666 |
| parallel_create_table | 1578 |
| advance_status | 1134 |
| zone_merge_finish | 993 |
| start_merge | 993 |
| set_zone_merging | 993 |
| batch_release_snapshot | 756 |
| batch_acquire_snapshot | 345 |
| root_minor_freeze | 331 |
| merging | 331 |
| merge_stat | 331 |
| global_merged | 331 |
| root_major_freeze | 324 |
| start_backup_data | 324 |
| backup data succeed | 324 |
| after_backup_consistent_scn | 162 |
| persist_set_task | 162 |
| persist sys ls task succeed | 162 |
| backup completing log succeed | 162 |
| backup sys ls meta succeed | 162 |
| backup user ls meta succeed | 162 |
| before_backup_data | 162 |
| create_table | 100 |
| update_ls_status | 26 |
| create_resource_pool | 12 |
| create_new_ls | 10 |
| create_ls_finish | 10 |
| create_ls | 10 |
| set_ls_member_list | 10 |
| insert_ls | 8 |
| alter_resource_unit | 6 |
| create_unit | 6 |
| create_resource_unit | 6 |
| change_recycle_schema_version | 4 |
| change_status | 4 |
| open_archive_mode | 2 |
| init_tenant_info | 2 |
| enable_archive | 2 |
+-------------------------------+----------+
41 rows in set (0.135 sec)
select event,count(0) from DBA_OB_SERVER_EVENT_HISTORY group by event order by 2 desc;
+-----------------------------------+----------+
| event | count(0) |
+-----------------------------------+----------+
| backup_major_tablet | 1378348 |
| backup_minor_tablet | 938065 |
| SET BASE LSN | 4902 |
| execute_cmd | 3539 |
| prefetch_major_data | 3515 |
| write slog checkpoint | 2983 |
| backup_major_data | 2742 |
| report_result | 2174 |
| build_index | 2166 |
| prefetch_minor_data | 1996 |
| before_backup_prepare_task | 1966 |
| backup_sys_tablet | 1953 |
| backup_minor_data | 1201 |
| before_backup_meta | 655 |
| schedule_backup_ls_meta | 655 |
| prefetch_sys_data | 654 |
| backup_sys_data | 652 |
| schedule_backup_ls_minor_data | 650 |
| schedule_backup_ls_major_data | 588 |
| check_tablet_info | 581 |
| schedule_build_tenant_level_index | 305 |
| ROLE TRANSITION | 218 |
| vote | 103 |
| lease expired | 69 |
| witness change leader | 53 |
| decentralized to be leader | 38 |
| change memberlist | 30 |
| SET INITIAL MEMBER LIST | 30 |
| ELECTION LEADER CHANGE | 28 |
| change leader to revoke | 28 |
| prepare change leader | 28 |
| change leader to takeover | 28 |
| lease expired to revoke | 28 |
| LOCK_CONFIG_CHANGE | 18 |
| UNLOCK_CONFIG_CHANGE | 18 |
| transfer | 16 |
| schema not refreshed | 12 |
| REMOVE FAILURE | 12 |
| ha_block_tx | 6 |
| ha_unblock_tx | 6 |
+-----------------------------------+----------+
40 rows in set (1.081 sec)
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