- 关于MogDB
- 快速入门
- MogDB实训平台
- 容器化安装
- 单节点安装
- 访问数据库
- 使用命令行访问MogDB
- 使用图形工具访问MogDB
- 使用中间件访问MogDB
- 使用编程语言访问MogDB
- 使用样本数据集Mogila
- 特性描述
- 高性能
- 高可用
- 维护性
- 数据库安全
- 企业级特性
- 应用开发接口
- AI能力
- 安装指南
- 管理指南
- AI特性指南
- 概述
- Predictor:AI查询时间预测
- X-Tuner:参数调优与诊断
- SQLdiag:慢SQL发现
- Anomaly-detection:数据库指标采集、预测与异常监控
- Index-advisor:索引推荐
- DeepSQL:库内AI算法
- DB4AI:数据库原生AI引擎
- 安全指南
- 开发者指南
- 应用程序开发教程
- 开发规范
- 基于JDBC开发
- 概述
- JDBC包、驱动类和环境类
- 开发流程
- 加载驱动
- 连接数据库
- 连接数据库(以SSL方式)
- 执行SQL语句
- 处理结果集
- 关闭连接
- 日志管理
- 示例:常用操作
- 示例:重新执行应用SQL
- 示例:通过本地文件导入导出数据
- 示例:从MY向MogDB进行数据迁移
- 示例:逻辑复制代码示例
- 示例:不同场景下连接数据库参数配置
- JDBC接口参考
- java.sql.Connection
- java.sql.CallableStatement
- java.sql.DatabaseMetaData
- java.sql.Driver
- java.sql.PreparedStatement
- java.sql.ResultSet
- java.sql.ResultSetMetaData
- java.sql.Statement
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- javax.sql.PooledConnection
- javax.naming.Context
- javax.naming.spi.InitialContextFactory
- CopyManager
- 基于ODBC开发
- 基于libpq开发
- 基于Psycopg开发
- 调试
- 附录
- 存储过程
- 用户自定义函数
- PL/pgSQL-SQL过程语言
- 定时任务
- 自治事务
- 逻辑复制
- Foreign Data Wrapper
- 物化视图
- 资源负载管理
- 应用程序开发教程
- 性能优化指南
- 参考指南
- 系统表及系统视图
- 系统表和系统视图概述
- 系统表
- GS_AUDITING_POLICY
- GS_AUDITING_POLICY_ACCESS
- GS_AUDITING_POLICY_FILTERS
- GS_AUDITING_POLICY_PRIVILEGES
- GS_CLIENT_GLOBAL_KEYS
- GS_CLIENT_GLOBAL_KEYS_ARGS
- GS_COLUMN_KEYS
- GS_COLUMN_KEYS_ARGS
- GS_ENCRYPTED_COLUMNS
- GS_ENCRYPTED_PROC
- GS_GLOBAL_CHAIN
- GS_MASKING_POLICY
- GS_MASKING_POLICY_ACTIONS
- GS_MASKING_POLICY_FILTERS
- GS_MATVIEW
- GS_MATVIEW_DEPENDENCY
- GS_OPT_MODEL
- GS_POLICY_LABEL
- GS_RECYCLEBIN
- GS_TXN_SNAPSHOT
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_PLAN_ENCODING_TABLE
- GS_WLM_PLAN_OPERATOR_INFO
- GS_WLM_EC_OPERATOR_INFO
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_APP_WORKLOADGROUP_MAPPING
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTHID
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_CAST
- PG_CLASS
- PG_COLLATION
- PG_CONSTRAINT
- PG_CONVERSION
- PG_DATABASE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_DEPEND
- PG_DESCRIPTION
- PG_DIRECTORY
- PG_ENUM
- PG_EXTENSION
- PG_EXTENSION_DATA_SOURCE
- PG_FOREIGN_DATA_WRAPPER
- PG_FOREIGN_SERVER
- PG_FOREIGN_TABLE
- PG_INDEX
- PG_INHERITS
- PG_JOB
- PG_JOB_PROC
- PG_LANGUAGE
- PG_LARGEOBJECT
- PG_LARGEOBJECT_METADATA
- PG_NAMESPACE
- PG_OBJECT
- PG_OPCLASS
- PG_OPERATOR
- PG_OPFAMILY
- PG_PARTITION
- PG_PLTEMPLATE
- PG_PROC
- PG_RANGE
- PG_RESOURCE_POOL
- PG_REWRITE
- PG_RLSPOLICY
- PG_SECLABEL
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SYNONYM
- PG_TABLESPACE
- PG_TRIGGER
- PG_TS_CONFIG
- PG_TS_CONFIG_MAP
- PG_TS_DICT
- PG_TS_PARSER
- PG_TS_TEMPLATE
- PG_TYPE
- PG_USER_MAPPING
- PG_USER_STATUS
- PG_WORKLOAD_GROUP
- PLAN_TABLE_DATA
- STATEMENT_HISTORY
- 系统视图
- GET_GLOBAL_PREPARED_XACTS(废弃)
- GS_AUDITING
- GS_AUDITING_ACCESS
- GS_AUDITING_PRIVILEGE
- GS_CLUSTER_RESOURCE_INFO
- GS_INSTANCE_TIME
- GS_LABELS
- GS_MASKING
- GS_MATVIEWS
- GS_SESSION_MEMORY
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY_CONTEXT
- GS_SESSION_MEMORY_DETAIL
- GS_SESSION_MEMORY_STATISTICS
- GS_SQL_COUNT
- GS_WLM_CGROUP_INFO
- GS_WLM_PLAN_OPERATOR_HISTORY
- GS_WLM_REBUILD_USER_RESOURCE_POOL
- GS_WLM_RESOURCE_POOL
- GS_WLM_USER_INFO
- GS_STAT_SESSION_CU
- GS_TOTAL_MEMORY_DETAIL
- MPP_TABLES
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_AVAILABLE_EXTENSIONS
- PG_COMM_DELAY
- PG_COMM_RECV_STREAM
- PG_COMM_SEND_STREAM
- PG_COMM_STATUS
- PG_CONTROL_GROUP_CONFIG
- PG_CURSORS
- PG_EXT_STATS
- PG_GET_INVALID_BACKENDS
- PG_GET_SENDERS_CATCHUP_TIME
- PG_GROUP
- PG_GTT_RELSTATS
- PG_GTT_STATS
- PG_GTT_ATTACHED_PIDS
- PG_INDEXES
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_REPLICATION_SLOTS
- PG_RLSPOLICIES
- PG_ROLES
- PG_RULES
- PG_SECLABELS
- PG_SETTINGS
- PG_SHADOW
- PG_STATS
- PG_STAT_ACTIVITY
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_TABLES
- PG_STAT_REPLICATION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_XACT_ALL_TABLES
- PG_STAT_XACT_SYS_TABLES
- PG_STAT_XACT_USER_FUNCTIONS
- PG_STAT_XACT_USER_TABLES
- PG_STATIO_ALL_INDEXES
- PG_STATIO_ALL_SEQUENCES
- PG_STATIO_ALL_TABLES
- PG_STATIO_SYS_INDEXES
- PG_STATIO_SYS_SEQUENCES
- PG_STATIO_SYS_TABLES
- PG_STATIO_USER_INDEXES
- PG_STATIO_USER_SEQUENCES
- PG_STATIO_USER_TABLES
- PG_TABLES
- PG_TDE_INFO
- PG_THREAD_WAIT_STATUS
- PG_TIMEZONE_ABBREVS
- PG_TIMEZONE_NAMES
- PG_TOTAL_MEMORY_DETAIL
- PG_TOTAL_USER_RESOURCE_INFO
- PG_TOTAL_USER_RESOURCE_INFO_OID
- PG_USER
- PG_USER_MAPPINGS
- PG_VARIABLE_INFO
- PG_VIEWS
- PLAN_TABLE
- GS_FILE_STAT
- GS_OS_RUN_INFO
- GS_REDO_STAT
- GS_SESSION_STAT
- GS_SESSION_TIME
- GS_THREAD_MEMORY_CONTEXT
- 系统函数
- 支持的数据类型
- SQL语法
- ABORT
- ALTER AGGREGATE
- ALTER AUDIT POLICY
- ALTER DATABASE
- ALTER DATA SOURCE
- ALTER DEFAULT PRIVILEGES
- ALTER DIRECTORY
- ALTER EXTENSION
- ALTER FOREIGN TABLE
- ALTER FUNCTION
- ALTER GROUP
- ALTER INDEX
- ALTER LANGUAGE
- ALTER LARGE OBJECT
- ALTER MASKING POLICY
- ALTER MATERIALIZED VIEW
- ALTER OPERATOR
- ALTER RESOURCE LABEL
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER RULE
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SYNONYM
- ALTER SYSTEM KILL SESSION
- ALTER SYSTEM SET
- ALTER TABLE
- ALTER TABLE PARTITION
- ALTER TABLE SUBPARTITION
- ALTER TABLESPACE
- ALTER TEXT SEARCH CONFIGURATION
- ALTER TEXT SEARCH DICTIONARY
- ALTER TRIGGER
- ALTER TYPE
- ALTER USER
- ALTER USER MAPPING
- ALTER VIEW
- ANALYZE | ANALYSE
- BEGIN
- CALL
- CHECKPOINT
- CLEAN CONNECTION
- CLOSE
- CLUSTER
- COMMENT
- COMMIT | END
- COMMIT PREPARED
- CONNECT BY
- COPY
- CREATE AGGREGATE
- CREATE AUDIT POLICY
- CREATE CAST
- CREATE CLIENT MASTER KEY
- CREATE COLUMN ENCRYPTION KEY
- CREATE DATABASE
- CREATE DATA SOURCE
- CREATE DIRECTORY
- CREATE EXTENSION
- CREATE FOREIGN TABLE
- CREATE FUNCTION
- CREATE GROUP
- CREATE INCREMENTAL MATERIALIZED VIEW
- CREATE INDEX
- CREATE LANGUAGE
- CREATE MASKING POLICY
- CREATE MATERIALIZED VIEW
- CREATE MODEL
- CREATE OPERATOR
- CREATE PACKAGE
- CREATE ROW LEVEL SECURITY POLICY
- CREATE PROCEDURE
- CREATE RESOURCE LABEL
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE RULE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SYNONYM
- CREATE TABLE
- CREATE TABLE AS
- CREATE TABLE PARTITION
- CREATE TABLE SUBPARTITION
- CREATE TABLESPACE
- CREATE TEXT SEARCH CONFIGURATION
- CREATE TEXT SEARCH DICTIONARY
- CREATE TRIGGER
- CREATE TYPE
- CREATE USER
- CREATE USER MAPPING
- CREATE VIEW
- CREATE WEAK PASSWORD DICTIONARY
- CURSOR
- DEALLOCATE
- DECLARE
- DELETE
- DO
- DROP AGGREGATE
- DROP AUDIT POLICY
- DROP CAST
- DROP CLIENT MASTER KEY
- DROP COLUMN ENCRYPTION KEY
- DROP DATABASE
- DROP DATA SOURCE
- DROP DIRECTORY
- DROP EXTENSION
- DROP FOREIGN TABLE
- DROP FUNCTION
- DROP GROUP
- DROP INDEX
- DROP LANGUAGE
- DROP MASKING POLICY
- DROP MATERIALIZED VIEW
- DROP MODEL
- DROP OPERATOR
- DROP OWNED
- DROP PACKAGE
- DROP PROCEDURE
- DROP RESOURCE LABEL
- DROP RESOURCE POOL
- DROP ROW LEVEL SECURITY POLICY
- DROP ROLE
- DROP RULE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SYNONYM
- DROP TABLE
- DROP TABLESPACE
- DROP TEXT SEARCH CONFIGURATION
- DROP TEXT SEARCH DICTIONARY
- DROP TRIGGER
- DROP TYPE
- DROP USER
- DROP USER MAPPING
- DROP VIEW
- DROP WEAK PASSWORD DICTIONARY
- EXECUTE
- EXECUTE DIRECT
- EXPLAIN
- EXPLAIN PLAN
- FETCH
- GRANT
- INSERT
- LOCK
- MOVE
- MERGE INTO
- PREDICT BY
- PREPARE
- PREPARE TRANSACTION
- PURGE
- REASSIGN OWNED
- REFRESH INCREMENTAL MATERIALIZED VIEW
- REFRESH MATERIALIZED VIEW
- REINDEX
- RELEASE SAVEPOINT
- RESET
- REVOKE
- ROLLBACK
- ROLLBACK PREPARED
- ROLLBACK TO SAVEPOINT
- SAVEPOINT
- SELECT
- SELECT INTO
- SET
- SET CONSTRAINTS
- SET ROLE
- SET SESSION AUTHORIZATION
- SET TRANSACTION
- SHOW
- SHUTDOWN
- SNAPSHOT
- START TRANSACTION
- TIMECAPSULE TABLE
- TRUNCATE
- UPDATE
- VACUUM
- VALUES
- SQL参考
- GUC参数说明
- Schema
- Information Schema
- DBE_PERF
- 概述
- OS
- Instance
- Memory
- File
- Object
- STAT_USER_TABLES
- SUMMARY_STAT_USER_TABLES
- GLOBAL_STAT_USER_TABLES
- STAT_USER_INDEXES
- SUMMARY_STAT_USER_INDEXES
- GLOBAL_STAT_USER_INDEXES
- STAT_SYS_TABLES
- SUMMARY_STAT_SYS_TABLES
- GLOBAL_STAT_SYS_TABLES
- STAT_SYS_INDEXES
- SUMMARY_STAT_SYS_INDEXES
- GLOBAL_STAT_SYS_INDEXES
- STAT_ALL_TABLES
- SUMMARY_STAT_ALL_TABLES
- GLOBAL_STAT_ALL_TABLES
- STAT_ALL_INDEXES
- SUMMARY_STAT_ALL_INDEXES
- GLOBAL_STAT_ALL_INDEXES
- STAT_DATABASE
- SUMMARY_STAT_DATABASE
- GLOBAL_STAT_DATABASE
- STAT_DATABASE_CONFLICTS
- SUMMARY_STAT_DATABASE_CONFLICTS
- GLOBAL_STAT_DATABASE_CONFLICTS
- STAT_XACT_ALL_TABLES
- SUMMARY_STAT_XACT_ALL_TABLES
- GLOBAL_STAT_XACT_ALL_TABLES
- STAT_XACT_SYS_TABLES
- SUMMARY_STAT_XACT_SYS_TABLES
- GLOBAL_STAT_XACT_SYS_TABLES
- STAT_XACT_USER_TABLES
- SUMMARY_STAT_XACT_USER_TABLES
- GLOBAL_STAT_XACT_USER_TABLES
- STAT_XACT_USER_FUNCTIONS
- SUMMARY_STAT_XACT_USER_FUNCTIONS
- GLOBAL_STAT_XACT_USER_FUNCTIONS
- STAT_BAD_BLOCK
- SUMMARY_STAT_BAD_BLOCK
- GLOBAL_STAT_BAD_BLOCK
- STAT_USER_FUNCTIONS
- SUMMARY_STAT_USER_FUNCTIONS
- GLOBAL_STAT_USER_FUNCTIONS
- Workload
- Session/Thread
- SESSION_STAT
- GLOBAL_SESSION_STAT
- SESSION_TIME
- GLOBAL_SESSION_TIME
- SESSION_MEMORY
- GLOBAL_SESSION_MEMORY
- SESSION_MEMORY_DETAIL
- GLOBAL_SESSION_MEMORY_DETAIL
- SESSION_STAT_ACTIVITY
- GLOBAL_SESSION_STAT_ACTIVITY
- THREAD_WAIT_STATUS
- GLOBAL_THREAD_WAIT_STATUS
- LOCAL_THREADPOOL_STATUS
- GLOBAL_THREADPOOL_STATUS
- SESSION_CPU_RUNTIME
- SESSION_MEMORY_RUNTIME
- STATEMENT_IOSTAT_COMPLEX_RUNTIME
- LOCAL_ACTIVE_SESSION
- Transaction
- Query
- STATEMENT
- SUMMARY_STATEMENT
- STATEMENT_COUNT
- GLOBAL_STATEMENT_COUNT
- SUMMARY_STATEMENT_COUNT
- GLOBAL_STATEMENT_COMPLEX_HISTORY
- GLOBAL_STATEMENT_COMPLEX_HISTORY_TABLE
- GLOBAL_STATEMENT_COMPLEX_RUNTIME
- STATEMENT_RESPONSETIME_PERCENTILE
- STATEMENT_USER_COMPLEX_HISTORY
- STATEMENT_COMPLEX_RUNTIME
- STATEMENT_COMPLEX_HISTORY_TABLE
- STATEMENT_COMPLEX_HISTORY
- STATEMENT_WLMSTAT_COMPLEX_RUNTIME
- STATEMENT_HISTORY
- Cache/IO
- STATIO_USER_TABLES
- SUMMARY_STATIO_USER_TABLES
- GLOBAL_STATIO_USER_TABLES
- STATIO_USER_INDEXES
- SUMMARY_STATIO_USER_INDEXES
- GLOBAL_STATIO_USER_INDEXES
- STATIO_USER_SEQUENCES
- SUMMARY_STATIO_USER_SEQUENCES
- GLOBAL_STATIO_USER_SEQUENCES
- STATIO_SYS_TABLES
- SUMMARY_STATIO_SYS_TABLES
- GLOBAL_STATIO_SYS_TABLES
- STATIO_SYS_INDEXES
- SUMMARY_STATIO_SYS_INDEXES
- GLOBAL_STATIO_SYS_INDEXES
- STATIO_SYS_SEQUENCES
- SUMMARY_STATIO_SYS_SEQUENCES
- GLOBAL_STATIO_SYS_SEQUENCES
- STATIO_ALL_TABLES
- SUMMARY_STATIO_ALL_TABLES
- GLOBAL_STATIO_ALL_TABLES
- STATIO_ALL_INDEXES
- SUMMARY_STATIO_ALL_INDEXES
- GLOBAL_STATIO_ALL_INDEXES
- STATIO_ALL_SEQUENCES
- SUMMARY_STATIO_ALL_SEQUENCES
- GLOBAL_STATIO_ALL_SEQUENCES
- GLOBAL_STAT_DB_CU
- GLOBAL_STAT_SESSION_CU
- Utility
- REPLICATION_STAT
- GLOBAL_REPLICATION_STAT
- REPLICATION_SLOTS
- GLOBAL_REPLICATION_SLOTS
- BGWRITER_STAT
- GLOBAL_BGWRITER_STAT
- GLOBAL_CKPT_STATUS
- GLOBAL_DOUBLE_WRITE_STATUS
- GLOBAL_PAGEWRITER_STATUS
- GLOBAL_RECORD_RESET_TIME
- GLOBAL_REDO_STATUS
- GLOBAL_RECOVERY_STATUS
- CLASS_VITAL_INFO
- USER_LOGIN
- SUMMARY_USER_LOGIN
- GLOBAL_GET_BGWRITER_STATUS
- GLOBAL_SINGLE_FLUSH_DW_STATUS
- GLOBAL_CANDIDATE_STATUS
- Lock
- Wait Events
- Configuration
- Operator
- Workload Manager
- Global Plancache
- RTO
- 附录
- DBE_PLDEBUGGER Schema
- DBE_PLDEBUGGER Schema概述
- DBE_PLDEBUGGER.turn_on
- DBE_PLDEBUGGER.turn_off
- DBE_PLDEBUGGER.local_debug_server_info
- DBE_PLDEBUGGER.attach
- DBE_PLDEBUGGER.next
- DBE_PLDEBUGGER.continue
- DBE_PLDEBUGGER.abort
- DBE_PLDEBUGGER.print_var
- DBE_PLDEBUGGER.info_code
- DBE_PLDEBUGGER.step
- DBE_PLDEBUGGER.add_breakpoint
- DBE_PLDEBUGGER.delete_breakpoint
- DBE_PLDEBUGGER.info_breakpoints
- DBE_PLDEBUGGER.backtrace
- DBE_PLDEBUGGER.finish
- DBE_PLDEBUGGER.set_var
- DB4AI Schema
- 工具参考
- 工具一览表
- 客户端工具
- 服务端工具
- 系统内部使用的工具
- mogdb
- gs_backup
- gs_basebackup
- gs_ctl
- gs_initdb
- gs_install
- gs_install_plugin
- gs_install_plugin_local
- gs_preinstall
- gs_sshexkey
- gs_tar
- gs_uninstall
- gs_upgradectl
- gs_expansion
- gs_dropnode
- gs_probackup
- gstrace
- kdb5_util
- kadmin.local
- kinit
- klist
- krb5kdc
- kdestroy
- pg_config
- pg_controldata
- pg_recvlogical
- pg_resetxlog
- pg_archivecleanup
- pssh
- pscp
- transfer.py
- FAQ
- gs_collector工具支持收集的系统表和视图列表
- 插件
- 数据库报错信息
- SQL标准错误码说明
- 第三方库错误码说明
- GAUSS-00001 - GAUSS-00100
- GAUSS-00101 - GAUSS-00200
- GAUSS 00201 - GAUSS 00300
- GAUSS 00301 - GAUSS 00400
- GAUSS 00401 - GAUSS 00500
- GAUSS 00501 - GAUSS 00600
- GAUSS 00601 - GAUSS 00700
- GAUSS 00701 - GAUSS 00800
- GAUSS 00801 - GAUSS 00900
- GAUSS 00901 - GAUSS 01000
- GAUSS 01001 - GAUSS 01100
- GAUSS 01101 - GAUSS 01200
- GAUSS 01201 - GAUSS 01300
- GAUSS 01301 - GAUSS 01400
- GAUSS 01401 - GAUSS 01500
- GAUSS 01501 - GAUSS 01600
- GAUSS 01601 - GAUSS 01700
- GAUSS 01701 - GAUSS 01800
- GAUSS 01801 - GAUSS 01900
- GAUSS 01901 - GAUSS 02000
- GAUSS 02001 - GAUSS 02100
- GAUSS 02101 - GAUSS 02200
- GAUSS 02201 - GAUSS 02300
- GAUSS 02301 - GAUSS 02400
- GAUSS 02401 - GAUSS 02500
- GAUSS 02501 - GAUSS 02600
- GAUSS 02601 - GAUSS 02700
- GAUSS 02701 - GAUSS 02800
- GAUSS 02801 - GAUSS 02900
- GAUSS 02901 - GAUSS 03000
- GAUSS 03001 - GAUSS 03100
- GAUSS 03101 - GAUSS 03200
- GAUSS 03201 - GAUSS 03300
- GAUSS 03301 - GAUSS 03400
- GAUSS 03401 - GAUSS 03500
- GAUSS 03501 - GAUSS 03600
- GAUSS 03601 - GAUSS 03700
- GAUSS 03701 - GAUSS 03800
- GAUSS 03801 - GAUSS 03900
- GAUSS 03901 - GAUSS 04000
- GAUSS 04001 - GAUSS 04100
- GAUSS 04101 - GAUSS 04200
- GAUSS 04201 - GAUSS 04300
- GAUSS 04301 - GAUSS 04400
- GAUSS 04401 - GAUSS 04500
- GAUSS 04501 - GAUSS 04600
- GAUSS 04601 - GAUSS 04700
- GAUSS 04701 - GAUSS 04800
- GAUSS 04801 - GAUSS 04900
- GAUSS 04901 - GAUSS 05000
- GAUSS 05001 - GAUSS 05100
- GAUSS 05101 - GAUSS 05200
- GAUSS 05201 - GAUSS 05300
- GAUSS 05301 - GAUSS 05400
- GAUSS 05401 - GAUSS 05500
- GAUSS 05501 - GAUSS 05600
- GAUSS 05601 - GAUSS 05700
- GAUSS 05701 - GAUSS 05800
- GAUSS 05801 - GAUSS 05900
- GAUSS 05901 - GAUSS 06000
- GAUSS 06001 - GAUSS 06100
- GAUSS 06101 - GAUSS 06200
- GAUSS 06201 - GAUSS 06300
- GAUSS 06301 - GAUSS 06400
- GAUSS 06401 - GAUSS 06500
- GAUSS 06501 - GAUSS 06600
- GAUSS 06601 - GAUSS 06700
- GAUSS 06701 - GAUSS 06800
- GAUSS 06801 - GAUSS 06900
- GAUSS 06901 - GAUSS 07000
- GAUSS 07001 - GAUSS 07100
- GAUSS 07101 - GAUSS 07200
- GAUSS 07201 - GAUSS 07300
- GAUSS 07301 - GAUSS 07400
- GAUSS 07401 - GAUSS 07480
- GAUSS 50000 - GAUSS 50999
- GAUSS 51000 - GAUSS 51999
- GAUSS 52000 - GAUSS 52999
- GAUSS 53000 - GAUSS 53699
- 错误日志信息参考
- 系统表及系统视图
- 故障诊断指南
- 常见故障定位手段
- 常见故障定位案例
- core问题定位
- 权限/会话/数据类型问题定位
- 服务/高可用/并发问题定位
- 表/分区表问题定位
- 文件系统/磁盘/内存问题定位
- SQL问题定位
- 索引问题定位
- 源码解析
- 常见问题解答 (FAQs)
- 术语表
安装MogDB
创建XML配置文件
安装MogDB前需要创建XML文件。XML文件包含部署MogDB的服务器信息、安装路径、IP地址以及端口号等。用于告知MogDB如何部署。用户需根据不同场配置对应的XML文件。
参数说明
参数 | 说明 |
clusterName | MogDB名称。 |
nodeNames | MogDB中主机名称。 |
backIp1s | 主机在后端存储网络中的IP地址(内网IP)。所有MogDB主机使用后端存储网络通讯。 |
gaussdbAppPath |
MogDB程序安装目录。此目录应满足如下要求: - 磁盘空间>1GB - 与数据库所需其它路径相互独立,没有包含关系。 |
gaussdbLogPath |
MogDB运行日志和操作日志存储目录。此目录应满足如下要求: - 磁盘空间建议根据主机上的数据库节点数规划。数据库节点预留1GB空间的基础上,再适当预留冗余空间。 - 与MogDB所需其它路径相互独立,没有包含关系。 此路径可选。不指定的情况下,MogDB安装时会默认指定“$GAUSSLOG/安装用户名”作为日志目录。 |
tmpdbPath |
数据库临时文件存放目录。 若不配置tmpdbPath,默认存放在/opt/mogdb/tools/perfadm_db目录下。 |
gaussdbToolPath |
MogDB系统工具目录,主要用于存放互信工具等。此目录应满足如下要求: - 磁盘空间>100MB - 固定目录,与数据库所需其它目录相互独立,没有包含关系。 此目录可选。不指定的情况下,MogDB安装时会默认指定“/opt/mogdb/tools”作为数据库系统工具目录。 |
corePath | MogDB core文件的指定目录。 |
clusterType |
MogDB类型,MogDB拓扑类型;可选字段。 “single-inst”表示单机一主多备部署形态。 |
示例
单节点配置文件
<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
<!-- MogDB整体信息 -->
<CLUSTER>
<PARAM name="clusterName" value="dbCluster" />
<PARAM name="nodeNames" value="node1" />
<PARAM name="backIp1s" value="192.168.0.11"/>
<PARAM name="gaussdbAppPath" value="/opt/mogdb/app" />
<PARAM name="gaussdbLogPath" value="/var/log/mogdb" />
<PARAM name="gaussdbToolPath" value="/opt/mogdb/tools" />
<PARAM name="corePath" value="/opt/mogdb/corefile"/>
<PARAM name="clusterType" value="single-inst"/>
</CLUSTER>
<!-- 每台服务器上的节点部署信息 -->
<DEVICELIST>
<!-- node1上的节点部署信息 -->
<DEVICE sn="1000001">
<PARAM name="name" value="node1"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.11"/>
<PARAM name="sshIp1" value="192.168.0.11"/>
<!--dbnode-->
<PARAM name="dataNum" value="1"/>
<PARAM name="dataPortBase" value="26000"/>
<PARAM name="dataNode1" value="/mogdb/data/db1"/>
</DEVICE>
</DEVICELIST>
</ROOT>
说明:替换主机名和IP,其他参数默认即可。
一主一备配置文件
<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
<!-- MogDB整体信息 -->
<CLUSTER>
<PARAM name="clusterName" value="dbCluster" />
<PARAM name="nodeNames" value="node1,node2" />
<PARAM name="backIp1s" value="192.168.0.11,192.168.0.12"/>
<PARAM name="gaussdbAppPath" value="/opt/mogdb/app" />
<PARAM name="gaussdbLogPath" value="/var/log/mogdb" />
<PARAM name="gaussdbToolPath" value="/opt/mogdb/tools" />
<PARAM name="corePath" value="/opt/mogdb/corefile"/>
<PARAM name="clusterType" value="single-inst"/>
</CLUSTER>
<!-- 每台服务器上的节点部署信息 -->
<DEVICELIST>
<!-- node1上的节点部署信息 -->
<DEVICE sn="1000001">
<PARAM name="name" value="node1"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.11"/>
<PARAM name="sshIp1" value="192.168.0.11"/>
<!--dbnode-->
<PARAM name="dataNum" value="1"/>
<PARAM name="dataPortBase" value="26000"/>
<PARAM name="dataNode1" value="/mogdb/data/db1,node2,/mogdb/data/db1"/>
</DEVICE>
<!-- node2上的节点部署信息,其中“name”的值配置为主机名称 -->
<DEVICE sn="1000002">
<PARAM name="name" value="node2"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.12"/>
<PARAM name="sshIp1" value="192.168.0.12"/>
</DEVICE>
</DEVICELIST>
</ROOT>
说明:替换主机名和IP,其他参数默认即可。
一主二备配置文件
<?xml version="1.0" encoding="UTF-8"?>
<ROOT>
<!-- MogDB整体信息 -->
<CLUSTER>
<PARAM name="clusterName" value="dbCluster" />
<PARAM name="nodeNames" value="node1,node2,node3" />
<PARAM name="backIp1s" value="192.168.0.11,192.168.0.12, 192.168.0.13"/>
<PARAM name="gaussdbAppPath" value="/opt/mogdb/app" />
<PARAM name="gaussdbLogPath" value="/var/log/mogdb" />
<PARAM name="gaussdbToolPath" value="/opt/mogdb/tools" />
<PARAM name="corePath" value="/opt/mogdb/corefile"/>
<PARAM name="clusterType" value="single-inst"/>
</CLUSTER>
<!-- 每台服务器上的节点部署信息 -->
<DEVICELIST>
<!-- node1上的节点部署信息 -->
<DEVICE sn="1000001">
<PARAM name="name" value="node1"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.11"/>
<PARAM name="sshIp1" value="192.168.0.11"/>
<!--dbnode-->
<PARAM name="dataNum" value="1"/>
<PARAM name="dataPortBase" value="26000"/>
<PARAM name="dataNode1" value="/mogdb/data/db1,node2,/mogdb/data/db1, node3,/mogdb/data/db1"/>
</DEVICE>
<!-- node2上的节点部署信息,其中“name”的值配置为主机名称 -->
<DEVICE sn="1000002">
<PARAM name="name" value="node2"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.12"/>
<PARAM name="sshIp1" value="192.168.0.12"/>
</DEVICE>
<!--node3上的节点部署信息,其中“name”的值配置为主机名称 -->
<DEVICE sn="1000003">
<PARAM name="name" value="node3"/>
<PARAM name="azName" value="AZ1"/>
<PARAM name="azPriority" value="1"/>
<!-- 如果服务器只有一个网卡可用,将backIP1和sshIP1配置成同一个IP -->
<PARAM name="backIp1" value="192.168.0.13"/>
<PARAM name="sshIp1" value="192.168.0.13"/>
</DEVICE>
</DEVICELIST>
</ROOT>
说明:替换主机名和IP,其他参数默认即可。/mogdb/data/db1为数据存储路径,可根据需要替换。
下载安装包
安装前可访问MogDB下载页面下载适用于您当前操作系统和CPU的安装包。以CentOS系统为例,各安装包及功能介绍见下表。
安装包 | 功能 |
---|---|
MogDB-x.x.x-CentOS-x86_64.tar | 包含所有安装包所有文件 |
MogDB-x.x.x-CentOS-64bit.tar.bz2 | (主备)MogDB主备(Datanode)。负责存储业务数据、执行数据查询任务以及向客户端返回执行结果。MogDB实例包含主、备两种类型,支持一主多备。建议将主、备MogDB实例分散部署在不同的物理节点中。 |
MogDB-x.x.x-CentOS-64bit.sha256 | MogDB-x.x.x-CentOS-64bit.tar.bz2的sha256的hash值 |
MogDB-x.x.x-CentOS-64bit-Libpq.tar.gz | C程序访问MogDB数据库的驱动 |
MogDB-x.x.x-CentOS-64bit-om.tar.gz | 运维管理模块(Operation Manager)。提供数据库日常运维、配置管理的管理接口、工具。 |
MogDB-x.x.x-CentOS-64bit-om.sha256 | MogDB-x.x.x-CentOS-64bit-om.tar.gz的sha256的hash值 |
MogDB-x.x.x-CentOS-64bit-tools.tar.gz | 客户端驱动(Client Driver)。负责接收来自应用的访问请求,并向应用返回执行结果。客户端驱动负责与MogDB实例通信,发送应用的SQL命令,接收MogDB实例的执行结果 |
upgrade_sql.tar.gz | 升级所需要的SQL |
upgrade_sql.sha256 | upgrade_sql.tar.gz的sha256的hash值 |
环境初始化
下文以CentOS 7.6系统为例介绍安装过程。
操作步骤
-
以root用户执行以下命令安装所需的基础环境包,以避免后续安装过程中因系统采用最小化安装或者安装包不全导致的报错。
yum install -y libaio-devel gcc gcc-c++ zlib-devel
-
以root用户登录待安装MogDB的任意主机,并按规划创建存放安装包的目录,下文以
/opt/software/mogdb
为例。mkdir -p /opt/software/mogdb chmod 755 -R /opt/software
-
进入
/opt/software/mogdb
,将安装包及配置文件clusterconfig.xml
上传至此目录。若未创建配置文件,可通过vi clusterconfig.xml
新建并编辑配置文件。cd /opt/software/mogdb
说明: 在允许访问外网的环境中,可通过
wget
命令直接下载适用于当前操作系统和CPU的安装包:wget -c https://cdn-mogdb.enmotech.com/mogdb-media/2.1.1/MogDB-2.1.1-CentOS-x86_64.tar
-
在安装包所在的目录下,依次解压安装包。
tar -xvf MogDB-x.x.x-CentOS-x86_64.tar tar -xvf MogDB-x.x.x-CentOS-64bit-om.tar.gz
-
进入到工具脚本存放目录下。
cd /opt/software/mogdb/script
-
为确保openssl版本正确,执行预安装前请加载安装包中lib库。执行命令如下,其中
{packagePath}
为用户安装包放置的路径,本示例中为/opt/software/mogdb
。export LD_LIBRARY_PATH={packagePath}/script/gspylib/clib:$LD_LIBRARY_PATH
-
为确保成功安装,请执行如下命令检查主机名称是否一致。预安装过程中,会对hostname进行检查。
hostname vi /etc/hostname
-
若您使用的为openEuler系统,需打开
performance.sh
文件注释#sysctl -w vm.min_free_kbytes=112640 &> /dev/null
vi /etc/profile.d/performance.sh
完成后跳过第9步即可。
-
CentOS系统需要安装python3,请依次执行以下命令。
注意:CentOS系统中进行标准安装,请务必安装Python 3.6.x版本,目前不支持Python更高版本。
wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz mkdir -p /usr/local/python3 tar -zxvf Python-3.6.5.tgz cd Python-3.6.5 ./configure --prefix=/usr/local/python3 --enable-shared CFLAGS=-fPIC && make && make install ln -s /usr/local/python3/bin/python3 /usr/bin/python3 ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
说明:
-
如遇
zipimport.ZipImportError: can't decompress data; zlib not available
报错,请执行yum -y install zlib*
安装解压缩类库,之后重新安装。 -
如遇
find:'/run/user/1000/gvfs':权限不够
的报错,可忽略。
-
初始化脚本
执行以下命令以初始化脚本:
/opt/software/mogdb/script/gs_preinstall -U omm -G dbgrp -X /opt/software/mogdb/clusterconfig.xml
回显如下:
Parsing the configuration file.
Successfully parsed the configuration file.
Installing the tools on the local node.
Successfully installed the tools on the local node.
Distributing package.
Begin to distribute package to tool path.
Successfully distribute package to tool path.
Begin to distribute package to package path.
Successfully distribute package to package path.
Successfully distributed package.
Installing the tools in the cluster.
Successfully installed the tools in the cluster.
Checking hostname mapping.
Successfully checked hostname mapping.
Checking OS version.
Successfully checked OS version.
Creating cluster's path.
Successfully created cluster's path.
Setting SCTP service.
Successfully set SCTP service.
Set and check OS parameter.
Setting OS parameters.
Successfully set OS parameters.
Set and check OS parameter completed.
Preparing CRON service.
Successfully prepared CRON service.
Preparing SSH service.
Successfully prepared SSH service.
Setting user environmental variables.
Successfully set user environmental variables.
Configuring alarms on the cluster nodes.
Successfully configured alarms on the cluster nodes.
Setting the dynamic link library.
Successfully set the dynamic link library.
Setting Cgroup.
Successfully set Cgroup.
Set ARM Optimization.
Successfully set ARM Optimization.
Setting finish flag.
Successfully set finish flag.
Preinstallation succeeded.
说明:
运行过程中会创建omm用户,输入yes,然后输入相关密码,需保证复杂度要求,密码应包括大小写、字符、数字,例如Enmo@123。
如遇以下错误,则表示Python版本过高。
[root@localhost mogdb]# /opt/software/mogdb/script/gs_preinstall -U omm -G dbgrp -X /mogdb/etc/mogdb_clusterconfig.xml Failed to execute cmd: rm -rf '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_linux.so' && cp -r '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_linux.so_3.9' '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_linux.so' && rm -rf '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_posix.so' && cp -r '/opt/software/mogdb/script/gspylib/os/./../../../lib /psutil/_psutil_posix.so_3.9' '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_posix.so' . Error: cp: cannot stat '/opt/software/mogdb/script/gspylib/os/./../../../lib/psutil/_psutil_linux.so_3.9': No such file or directory
执行安装
修改安装目录下lib及script文件夹的用户以及用户组:
chown -R omm:dbgrp /opt/software/mogdb/lib
chown -R omm:dbgrp /opt/software/mogdb/script
依次执行以下命令安装MogDB:
su - omm
/opt/software/mogdb/script/gs_install -X /opt/software/mogdb/clusterconfig.xml --gsinit-parameter="--locale=en_US.UTF-8" --gsinit-parameter="--encoding=UTF-8"
回显如下:
Parsing the configuration file.
Check preinstall on every node.
Successfully checked preinstall on every node.
Creating the backup directory.
Successfully created the backup directory.
begin deploy..
Installing the cluster.
begin prepare Install Cluster..
Checking the installation environment on all nodes.
begin install Cluster..
Installing applications on all nodes.
Successfully installed APP.
begin init Instance..
encrypt ciper and rand files for database.
Please enter password for database:
Please repeat for database:
begin to create CA cert files
The sslcert will be generated in /opt/mogdb/cluster/app/share/sslcert/om
Cluster installation is completed.
Configuring.
Deleting instances from all nodes.
Successfully deleted instances from all nodes.
Checking node configuration on all nodes.
Initializing instances on all nodes.
Updating instance configuration on all nodes.
Check consistence of memCheck and coresCheck on DN nodes.
Successful check consistence of memCheck and coresCheck on all nodes.
Configuring pg_hba on all nodes.
Configuration is completed.
Successfully started cluster.
Successfully installed application.
说明:在执行过程中,用户需根据提示输入数据库的密码,密码具有一定的复杂度,为保证用户正常使用该数据库,请记住输入的数据库密码。
连接数据库
安装完成后,可使用omm用户通过“gsql -d postgres -p 26000 -r”命令连接MogDB数据库,其中“-p 26000”为数据库端口号,请根据实际情况替换。键入“\copyright”可查看版权信息。
[omm@ecs-saving-0006 ~]$ gsql -d postgres -p 26000 -r
gsql ((MogDB x.x.x build 56189e20) compiled at 2022-01-07 18:47:53 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
MogDB=# \copyright
MogDB Database Management System
Copyright (c) Yunhe Enmo (Beijing) Information Technology Co., Ltd. Copyright 2020 , All rights reserved.
更改同步节点
默认备库为异步,如果想配置同步需在主库做如下配置。
[omm@ecs-saving-0006 ~]$ sed -i "/synchronous_standby_names/synchronous_standby_names = 'dn_6002'" /mogdb/data/db1/postgresql.conf
[omm@ecs-saving-0006 ~]$ gs_om -t restart
dn_6002值比较特殊,其值为固定值,主库为dn_6001,备库1为dn_6002,备库2为dn_6003,依次顺延。
'dn_6002,dn_6003'表示备库1,2为同步节点。
请替换相应的数据存储路径。