作为一款原生分布式数据库，OceanBase的集群是所有操作和运维的核心载体。不管是开发调试还是日常运维，先掌握「如何查看集群基本信息」，能让我们快速了解集群的运行状态、资源配置、部署模式，为后续的租户管理、性能调优打下基础。今天就结合OceanBase官方demo来学习。
零基础OceanBase数据库入门：搭建你的第一个OceanBase数据库
一、 demo本机部署
因为官方查看集群基本信息的demo页面需在电脑端打开，才能保证完整的操作体验！因此我自己部署了一个demo。
- 下载
从官方下载地址下载最新版一键安装包即可，地址如下：
javascript
https://www.oceanbase.com/softwarecenter
- 部署
其他部署步骤也可以参考
零基础OceanBase数据库入门：搭建你的第一个OceanBase数据库
当前我用的这个版本用 sh bin/install.sh即可安装
运行完毕如下：
执行命令让环境变量生效
bash
source ~/.oceanbase-all-in-one/bin/env.sh- 创建demo
通过obd方式创建demo
nginx
obd demo
完毕后如下：
验证部署结果
这样就部署完毕了。
二、 查看OceanBase集群基本信息
下面我们就用页面obshell方式及命令行方式对照来学习OceanBase集群的基本信息查看的方法。
- 连接集群
使用 root 用户登录集群的 sys 租户。
- 命令行方式：
nginx
obclient -h127.0.0.1 -P2881 -uroot@sys -p'1K4TjgkntnXm3r2nAGLE' -Doceanbase -A- obshell方式：
之前部署好的demo里有对应的信息：
浏览器中输入对于的密码即可
- 查看集群默认创建的Zone信息及节点信息
- 命令行
查看集群的Zone信息，可以查询oceanbase.DBA_OB_ZONES视图
sql
obclient(root@sys)[oceanbase]> SELECT * FROM oceanbase.DBA_OB_ZONES;+-------+----------------------------+----------------------------+--------+-------------+---------------+-----------+| ZONE | CREATE_TIME | MODIFY_TIME | STATUS | IDC | REGION | TYPE |+-------+----------------------------+----------------------------+--------+-------------+---------------+-----------+| zone1 | 2026-03-30 14:29:28.386408 | 2026-03-30 14:29:50.334032 | ACTIVE | default_idc | deault_region | ReadWrite |+-------+----------------------------+----------------------------+--------+-------------+---------------+-----------+1 row in set (0.136 sec)
查看完Zone再来查看下默认创建的节点信息，可以通过查询oceanbase.DBA_OB_SERVERS视图，获取集群中的节点信息。
obshell方式：
页面上更直观，可能看到下钻的更多细节信息
- 查看默认的资源信息
3.1 查看默认的资源池信息
可用使用DBA_OB_RESOURCE_POOLS视图，查看资源池信息。
sql
obclient(root@sys)[oceanbase]> SELECT * FROM oceanbase.DBA_OB_RESOURCE_POOLS;+------------------+----------+-----------+----------------------------+----------------------------+------------+----------------+-----------+--------------+| RESOURCE_POOL_ID | NAME | TENANT_ID | CREATE_TIME | MODIFY_TIME | UNIT_COUNT | UNIT_CONFIG_ID | ZONE_LIST | REPLICA_TYPE |+------------------+----------+-----------+----------------------------+----------------------------+------------+----------------+-----------+--------------+| 1 | sys_pool | 1 | 2026-03-30 14:29:27.783321 | 2026-03-30 14:29:27.809908 | 1 | 1 | zone1 | FULL |+------------------+----------+-----------+----------------------------+----------------------------+------------+----------------+-----------+--------------+1 row in set (0.005 sec)
从查询结果看，默认的资源池名称是sys_pool，资源池的ID（RESOURCE_POOL_ID）是1，归属于的租户ID（TENANT_ID）是1、使用的资源规格ID（UNIT_CONFIG_ID）是1，资源池的Unit个数（UNIT_COUNT）是1，使用的Zone列表（ZONE_LIST）是zone1。
3.2 查看默认的资源规格信息
通过DBA_OB_UNIT_CONFIGS视图，可以查看资源规格信息。
sql
obclient(root@sys)[oceanbase]> SELECT * FROM DBA_OB_UNIT_CONFIGS;+----------------+-----------------+----------------------------+----------------------------+---------+---------+-------------+---------------+----------------+---------------------+---------------------+-------------+---------------------+----------------------+| UNIT_CONFIG_ID | NAME | CREATE_TIME | MODIFY_TIME | MAX_CPU | MIN_CPU | MEMORY_SIZE | LOG_DISK_SIZE | DATA_DISK_SIZE | MAX_IOPS | MIN_IOPS | IOPS_WEIGHT | MAX_NET_BANDWIDTH | NET_BANDWIDTH_WEIGHT |+----------------+-----------------+----------------------------+----------------------------+---------+---------+-------------+---------------+----------------+---------------------+---------------------+-------------+---------------------+----------------------+| 1| sys_unit_config |2026-03-3014:29:27.769918|2026-03-3014:29:27.769918| 2| 2|1073741824| 2147483648| NULL|9223372036854775807|9223372036854775807| 2|9223372036854775807| 2 |+----------------+-----------------+----------------------------+----------------------------+---------+---------+-------------+---------------+----------------+---------------------+---------------------+-------------+---------------------+----------------------+1 row in set (0.015 sec)
从查询结果看，默认创建的资源规格（UNIT_CONFIG_ID）名称是sys_unit_config，资源规格ID（UNIT_CONFIG_ID）是1，CPU规格上限（MAX_CPU）是2C，内存规格（MEMORY_SIZE）是1073741824/1024/1024/1024=1G，日志盘空间（LOG_DISK_SIZE）是2147483648/1024/1024/1024=2G。
通过GV$OB_UNITS视图，也可以查看节点的Unit信息。
sql
obclient(root@sys)[oceanbase]> SELECT * FROM GV$OB_UNITS;结果显示如下
3.3 查看资源分配信息
通过 GV$OB_SERVERS 视图，可以查看 OBServer 的信息。
sql
obclient(root@sys)[oceanbase]> SELECT * FROM GV$OB_SERVERS;+-----------+----------+-------+----------+--------------+------------------+--------------+------------------+--------------+--------------+-------------------+-------------------+-----------------+--------------------+--------------------+------------------+-------------------------+--------------+---------------------+-------------------------+-----------------------+----------------------------------+-----------------------------+| SVR_IP | SVR_PORT | ZONE | SQL_PORT | CPU_CAPACITY | CPU_CAPACITY_MAX | CPU_ASSIGNED | CPU_ASSIGNED_MAX | MEM_CAPACITY | MEM_ASSIGNED | LOG_DISK_CAPACITY | LOG_DISK_ASSIGNED | LOG_DISK_IN_USE | DATA_DISK_CAPACITY | DATA_DISK_ASSIGNED | DATA_DISK_IN_USE | DATA_DISK_HEALTH_STATUS | MEMORY_LIMIT | DATA_DISK_ALLOCATED | DATA_DISK_ABNORMAL_TIME | SSL_CERT_EXPIRED_TIME | SS_DATA_DISK_OPERATION_SUGGESTED | SS_DATA_DISK_SIZE_SUGGESTED |+-----------+----------+-------+----------+--------------+------------------+--------------+------------------+--------------+--------------+-------------------+-------------------+-----------------+--------------------+--------------------+------------------+-------------------------+--------------+---------------------+-------------------------+-----------------------+----------------------------------+-----------------------------+| 127.0.0.1| 2882| zone1 | 2881| 8| 8| 2| 2| 5368709120| 1073741824| 15032385536| 2147483648| 201326592| 8589934592| NULL| 98566144| NORMAL | 6442450944| 2147483648|NULL |NULL |NULL | NULL |+-----------+----------+-------+----------+--------------+------------------+--------------+------------------+--------------+--------------+-------------------+-------------------+-----------------+--------------------+--------------------+------------------+-------------------------+-----------
从查询结果看，节点IP（SVR_IP）是127.0.0.1，服务器端口号（SVR_PORT）是2882，对应的zone名称（zone）是zone1，SQL端口（SQL_PORT）是2881，observer进程可用的CPU数量（CPU_CAPACITY）是8C，observer进程可用的内存（MEM_CAPACITY），已分配的内存（MEM_ASSIGNED），日志盘总空间（LOG_DISK_CAPACITY），已分配日志盘空间（LOG_DISK_ASSIGNED），日志盘已使用（LOG_DISK_IN_USE），数据盘空间（DATA_DISK_CAPACITY），数据盘已使用（DATA_DISK_IN_USE）。
3.4 查询 Unit 列表
可以通过如下SQL，查询当前集群的unit对应的租户、所在的主机等更详细的信息
sql
obclient(root@sys)[oceanbase]> SELECT -> /*+ QUERY_TIMEOUT(5000000) */ -> t1.UNIT_ID, -> t1.RESOURCE_POOL_ID, -> t1.ZONE, -> t1.SVR_IP, -> t1.SVR_PORT, -> t1.STATUS, -> t2.REPLICA_TYPE, -> t2.TENANT_ID, -> t3.TENANT_NAME, -> t2.NAME AS RESOURCE_POOL_NAME, -> t1.MIGRATE_FROM_SVR_IP, -> t1.MIGRATE_FROM_SVR_PORT, -> t1.MANUAL_MIGRATE -> FROM -> oceanbase.DBA_OB_UNITS AS t1 -> JOIN oceanbase.DBA_OB_RESOURCE_POOLS AS t2 ON t1.RESOURCE_POOL_ID = t2.RESOURCE_POOL_ID -> JOIN oceanbase.DBA_OB_TENANTS t3 ON t2.TENANT_ID = t3.TENANT_ID;+---------+------------------+-------+-----------+----------+--------+--------------+-----------+-------------+--------------------+---------------------+-----------------------+----------------+| UNIT_ID | RESOURCE_POOL_ID | ZONE | SVR_IP | SVR_PORT | STATUS | REPLICA_TYPE | TENANT_ID | TENANT_NAME | RESOURCE_POOL_NAME | MIGRATE_FROM_SVR_IP | MIGRATE_FROM_SVR_PORT | MANUAL_MIGRATE |+---------+------------------+-------+-----------+----------+--------+--------------+-----------+-------------+--------------------+---------------------+-----------------------+----------------+| 1 | 1 | zone1 | 127.0.0.1 | 2882 | ACTIVE | FULL | 1 | sys | sys_pool | NULL | NULL | NULL |+---------+------------------+-------+-----------+----------+--------+--------------+-----------+-------------+--------------------+---------------------+-----------------------+----------------+1 row in set (0.077 sec)
3.5 页面方式查看
obshell页面上可以直观看到资源使用情况信息：
- 查看租户信息
通过DBA_OB_TENANTS视图，可以查看租户信息。
objectivec
obclient(root@sys)[oceanbase]> SELECT * FROM DBA_OB_TENANTS;+-----------+-------------+-------------+----------------------------+----------------------------+--------------+---------------+-------------------+--------------------+--------+---------------+--------+-------------+-------------------+------------------+----------+----------------+--------------+--------------------+--------------+----------------------------+----------+------------+-----------+-------------------+-------------------+---------------+| TENANT_ID | TENANT_NAME | TENANT_TYPE | CREATE_TIME | MODIFY_TIME | PRIMARY_ZONE | LOCALITY | PREVIOUS_LOCALITY | COMPATIBILITY_MODE | STATUS | IN_RECYCLEBIN | LOCKED | TENANT_ROLE | SWITCHOVER_STATUS | SWITCHOVER_EPOCH | SYNC_SCN | REPLAYABLE_SCN | READABLE_SCN | RECOVERY_UNTIL_SCN | LOG_MODE | ARBITRATION_SERVICE_STATUS | UNIT_NUM | COMPATIBLE | MAX_LS_ID | RESTORE_DATA_MODE | FLASHBACK_LOG_SCN | COMMENT |+-----------+-------------+-------------+----------------------------+----------------------------+--------------+---------------+-------------------+--------------------+--------+---------------+--------+-------------+-------------------+------------------+----------+----------------+--------------+--------------------+--------------+----------------------------+----------+------------+-----------+-------------------+-------------------+---------------+| 1 | sys | SYS | 2026-03-30 14:29:27.859965 | 2026-03-30 14:29:27.859965 | RANDOM | FULL{1}@zone1 | NULL | MYSQL | NORMAL | NO | NO | PRIMARY | NORMAL | 0 | NULL | NULL | NULL | NULL | NOARCHIVELOG | DISABLED | 1 | 4.5.0.0 | 1 | NORMAL | NULL | system tenant |+-----------+-------------+-------------+----------------------------+----------------------------+--------------+---------------+-------------------+--------------------+--------+---------------+--------+-------------+-------------------+------------------+----------+----------------+--------------+--------------------+--------------+----------------------------+----------+------------+-----------+-------------------+-------------------+---------------+1 row in set (0.123 sec)
从查询结果看，默认创建的租户名称（TENANT_NAME）是sys，租户ID（TENANT_ID）是1，租户类型（TENANT_TYPE）是SYS租户，租户的PRIMARY_ZONE（PRIMARY_ZONE）是RANDOM，租户副本分布（LOCALITY）在zone1，兼容模式（COMPATIBILITY_MODE）是MySQL，即默认创建的SYS租户为MySQL模式。
查看租户的资源单元部署位置
通过以下语句，查看当前已创建租户资源单元所在设备IP信息。
sql
obclient(root@sys)[oceanbase]> SELECT a.TENANT_NAME,a.TENANT_ID,b.SVR_IP FROM DBA_OB_TENANTS a,GV$OB_UNITS b WHERE a.TENANT_ID=b.TENANT_ID;+-------------+-----------+-----------+| TENANT_NAME | TENANT_ID | SVR_IP |+-------------+-----------+-----------+| sys | 1 | 127.0.0.1 |+-------------+-----------+-----------+1 row in set (0.031 sec)
从查询结果可以看出，SYS租户对应的ID为1，资源所在节点的IP为127.0.0.1。
- 页面方式查看
- 查询数据库列表
- 命令行：
可以通过如下SQL，查询已存在的数据库的相关信息。
sql
obclient(root@sys)[oceanbase]> SELECT -> o.CREATED AS GMT_CREATE, -> o.OBJECT_ID AS DATABASE_ID, -> d.DATABASE_NAME, -> c.ID AS COLLATION_TYPE, -> NULL AS PRIMARY_ZONE, -> 0 AS READ_ONLY -> FROM -> oceanbase.DBA_OB_DATABASES d -> JOIN oceanbase.DBA_OBJECTS o -> JOIN information_schema.collations c ON d.DATABASE_NAME = o.OBJECT_NAME -> AND d.COLLATION = c.COLLATION_NAME -> WHERE -> o.OBJECT_TYPE = 'DATABASE';+---------------------+-------------+--------------------+----------------+--------------+-----------+| GMT_CREATE | DATABASE_ID | DATABASE_NAME | COLLATION_TYPE | PRIMARY_ZONE | READ_ONLY |+---------------------+-------------+--------------------+----------------+--------------+-----------+| 2026-03-30 14:29:28 | 201001 | oceanbase | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201002 | information_schema | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201003 | mysql | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201004 | __recyclebin | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201005 | __public | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201006 | SYS | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201007 | LBACSYS | 45 | NULL | 0 || 2026-03-30 14:29:28 | 201008 | ORAAUDITOR | 45 | NULL | 0 || 2026-03-30 14:29:28 | 500001 | test | 45 | NULL | 0 || 2026-03-30 14:29:44 | 500002 | sys_external_tbs | 45 | NULL | 0 || 2026-03-30 14:30:27 | 500006 | ocs | 45 | NULL | 0 |+---------------------+-------------+--------------------+----------------+--------------+-----------+11 rows in set (0.362 sec)
obclient(root@sys)[oceanbase]> show databases;+--------------------+| Database |+--------------------+| information_schema || LBACSYS || mysql || oceanbase || ocs || ORAAUDITOR || SYS || sys_external_tbs || test |+--------------------+9 rows in set (0.003 sec)
- 页面方式查看：
- 查看集群配置项
通过GV$OB_PARAMETERS视图，查询集群的配置项。
css
obclient(root@sys)[oceanbase]> SELECT * FROM GV$OB_PARAMETERS WHERE NAME LIKE '%syslog_level%'\G*************************** 1. row *************************** SVR_IP: 127.0.0.1 SVR_PORT: 2882 ZONE: zone1 SCOPE: CLUSTER TENANT_ID: NULL NAME: syslog_level DATA_TYPE: STRING VALUE: WDIAG INFO: specifies the current level of logging. There are DEBUG, TRACE, WDIAG, EDIAG, INFO, WARN, ERROR, seven different log levels. SECTION: OBSERVER EDIT_LEVEL: DYNAMIC_EFFECTIVEDEFAULT_VALUE: WDIAG ISDEFAULT: YES1 row in set (0.025 sec)
页面查看结果如下：
- 其他内容
页面上可以更直观的查看性能、配置、参数等信息：
三、学习小结
查看OceanBase集群基本信息，是入门的基础必学知识点新手用图形化界面，运维操作时可以考虑更精细化的用命令行。掌握这两种方法，就能快速了解集群的基本情况，为后续的租户创建、资源调整、性能调优做好准备。相信OceanBase的入门学习并不难，只要循序渐进，从基础的集群、租户开始，慢慢就能解锁更多高级功能～
本系列历史文章：