- 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
- 概览
- 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
- AI4DB:数据库自治运维
- DB4AI:数据库驱动AI
- AI in DB:数据库内AI功能
- ABO优化器
- 中间件
- 安装指南
- 管理指南
- 本地化
- 日常运维
- 主备管理
- MOT内存表管理
- 列存表管理
- 备份与恢复
- 两地三中心跨Region容灾
- 数据导出导入
- 升级指南
- AI特性指南
- AI特性概述
- AI4DB:数据库自治运维
- DBMind模式说明
- DBMind的支持组件
- DBMind的AI子功能
- DB4AI:数据库驱动AI
- AI in DB:数据库内AI功能
- ABO 优化器
- 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)
- 连接数据库(UDS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
- JDBC常用参数参考
- 基于ODBC开发
- 基于libpq开发
- libpq使用依赖的头文件
- 开发流程
- 示例
- 链接参数
- libpq接口参考
- 数据库连接控制函数
- 数据库执行语句函数
- 异步命令处理
- 取消正在处理的查询
- 基于Psycopg开发
- 调试
- 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
- Extension
- PostGIS Extension
- Foreign Data Wrapper
- orafce
- pg_bulkload
- pg_prewarm
- pg_repack
- pg_trgm
- wal2json
- whale
- 物化视图
- 分区管理
- 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_ASP
- 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_DB_PRIVILEGE
- GS_ENCRYPTED_COLUMNS
- GS_ENCRYPTED_PROC
- GS_GLOBAL_CHAIN
- GS_GLOBAL_CONFIG
- GS_MASKING_POLICY
- GS_MASKING_POLICY_ACTIONS
- GS_MASKING_POLICY_FILTERS
- GS_MATVIEW
- GS_MATVIEW_DEPENDENCY
- GS_MODEL_WAREHOUSE
- GS_OPT_MODEL
- GS_PACKAGE
- GS_POLICY_LABEL
- GS_RECYCLEBIN
- GS_TXN_SNAPSHOT
- GS_UID
- GS_WLM_EC_OPERATOR_INFO
- GS_WLM_INSTANCE_HISTORY
- GS_WLM_OPERATOR_INFO
- GS_WLM_PLAN_ENCODING_TABLE
- GS_WLM_PLAN_OPERATOR_INFO
- GS_WLM_SESSION_QUERY_INFO_ALL
- GS_WLM_USER_RESOURCE_HISTORY
- PG_AGGREGATE
- PG_AM
- PG_AMOP
- PG_AMPROC
- PG_APP_WORKLOADGROUP_MAPPING
- PG_ATTRDEF
- PG_ATTRIBUTE
- PG_AUTH_HISTORY
- PG_AUTH_MEMBERS
- PG_AUTHID
- 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_HASHBUCKET
- 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_PUBLICATION
- PG_PUBLICATION_REL
- PG_RANGE
- PG_REPLICATION_ORIGIN
- PG_RESOURCE_POOL
- PG_RLSPOLICY
- PG_SECLABEL
- PG_SET
- PG_SHDEPEND
- PG_SHDESCRIPTION
- PG_SHSECLABEL
- PG_STATISTIC
- PG_STATISTIC_EXT
- PG_SUBSCRIPTION
- 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
- PGXC_CLASS
- PGXC_GROUP
- PGXC_NODE
- PGXC_SLICE
- PLAN_TABLE_DATA
- STATEMENT_HISTORY
- 系统视图
- DV_SESSION_LONGOPS
- DV_SESSIONS
- GET_GLOBAL_PREPARED_XACTS(废弃)
- GS_AUDITING
- GS_AUDITING_ACCESS
- GS_AUDITING_PRIVILEGE
- GS_ASYNC_SUBMIT_SESSIONS_STATUS
- GS_CLUSTER_RESOURCE_INFO
- GS_COMPRESSION
- GS_DB_PRIVILEGES
- GS_FILE_STAT
- GS_GSC_MEMORY_DETAIL
- GS_INSTANCE_TIME
- GS_LABELS
- GS_LSC_MEMORY_DETAIL
- GS_MASKING
- GS_MATVIEWS
- GS_OS_RUN_INFO
- GS_REDO_STAT
- GS_SESSION_CPU_STATISTICS
- GS_SESSION_MEMORY
- GS_SESSION_MEMORY_CONTEXT
- GS_SESSION_MEMORY_DETAIL
- GS_SESSION_MEMORY_STATISTICS
- GS_SESSION_STAT
- GS_SESSION_TIME
- GS_SQL_COUNT
- GS_STAT_SESSION_CU
- GS_THREAD_MEMORY_CONTEXT
- GS_TOTAL_MEMORY_DETAIL
- GS_WLM_CGROUP_INFO
- GS_WLM_EC_OPERATOR_STATISTICS
- GS_WLM_OPERATOR_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- GS_WLM_PLAN_OPERATOR_HISTORY
- GS_WLM_REBUILD_USER_RESOURCE_POOL
- GS_WLM_RESOURCE_POOL
- GS_WLM_SESSION_HISTORY
- GS_WLM_SESSION_INFO
- GS_WLM_SESSION_INFO_ALL
- GS_WLM_SESSION_STATISTICS
- GS_WLM_USER_INFO
- GS_WRITE_TERM_LOG
- 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_ATTACHED_PIDS
- PG_GTT_RELSTATS
- PG_GTT_STATS
- PG_INDEXES
- PG_LOCKS
- PG_NODE_ENV
- PG_OS_THREADS
- PG_PREPARED_STATEMENTS
- PG_PREPARED_XACTS
- PG_PUBLICATION_TABLES
- PG_REPLICATION_ORIGIN_STATUS
- PG_REPLICATION_SLOTS
- PG_RLSPOLICIES
- PG_ROLES
- PG_RULES
- PG_RUNNING_XACTS
- PG_SECLABELS
- PG_SESSION_IOSTAT
- PG_SESSION_WLMSTAT
- PG_SETTINGS
- PG_SHADOW
- PG_STAT_ACTIVITY
- PG_STAT_ACTIVITY_NG
- PG_STAT_ALL_INDEXES
- PG_STAT_ALL_TABLES
- PG_STAT_BAD_BLOCK
- PG_STAT_BGWRITER
- PG_STAT_DATABASE
- PG_STAT_DATABASE_CONFLICTS
- PG_STAT_REPLICATION
- PG_STAT_SUBSCRIPTION
- PG_STAT_SYS_INDEXES
- PG_STAT_SYS_TABLES
- PG_STAT_USER_FUNCTIONS
- PG_STAT_USER_INDEXES
- PG_STAT_USER_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_STATS
- 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
- PG_WLM_STATISTICS
- PGXC_PREPARED_XACTS
- PLAN_TABLE
- 系统函数
- 逻辑操作符
- 比较操作符
- 字符处理函数和操作符
- 二进制字符串函数和操作符
- 位串函数和操作符
- 模式匹配操作符
- 数字操作函数和操作符
- 时间和日期处理函数和操作符
- 类型转换函数
- 几何函数和操作符
- 网络地址函数和操作符
- 文本检索函数和操作符
- JSON/JSONB函数和操作符
- HLL函数和操作符
- SEQUENCE函数
- 数组函数和操作符
- 范围函数和操作符
- 聚集函数
- 窗口函数(分析函数)
- 安全函数
- 账本数据库的函数
- 密态等值的函数
- 返回集合的函数
- 条件表达式函数
- 系统信息函数
- 系统管理函数
- 统计信息函数
- 触发器函数
- HashFunc函数
- 提示信息函数
- 全局临时表函数
- 故障注入系统函数
- AI特性函数
- 动态数据脱敏函数
- 其他系统函数
- 内部函数
- Global SysCache特性函数
- 数据损坏检测修复函数
- 废弃函数
- 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 GLOBAL CONFIGURATION
- ALTER GROUP
- ALTER INDEX
- ALTER LANGUAGE
- ALTER LARGE OBJECT
- ALTER MASKING POLICY
- ALTER MATERIALIZED VIEW
- ALTER PACKAGE
- ALTER PROCEDURE
- ALTER PUBLICATION
- ALTER RESOURCE LABEL
- ALTER RESOURCE POOL
- ALTER ROLE
- ALTER ROW LEVEL SECURITY POLICY
- ALTER RULE
- ALTER SCHEMA
- ALTER SEQUENCE
- ALTER SERVER
- ALTER SESSION
- ALTER SUBSCRIPTION
- 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 PROCEDURE
- CREATE PUBLICATION
- CREATE RESOURCE LABEL
- CREATE RESOURCE POOL
- CREATE ROLE
- CREATE ROW LEVEL SECURITY POLICY
- CREATE RULE
- CREATE SCHEMA
- CREATE SEQUENCE
- CREATE SERVER
- CREATE SUBSCRIPTION
- 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 GLOBAL CONFIGURATION
- DROP GROUP
- DROP INDEX
- DROP LANGUAGE
- DROP MASKING POLICY
- DROP MATERIALIZED VIEW
- DROP MODEL
- DROP OPERATOR
- DROP OWNED
- DROP PACKAGE
- DROP PROCEDURE
- DROP PUBLICATION
- DROP RESOURCE LABEL
- DROP RESOURCE POOL
- DROP ROLE
- DROP ROW LEVEL SECURITY POLICY
- DROP RULE
- DROP SCHEMA
- DROP SEQUENCE
- DROP SERVER
- DROP SUBSCRIPTION
- 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
- MERGE INTO
- MOVE
- 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
- SHRINK
- SQL参考
- GUC参数说明
- Schema
- 概述
- 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_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
- 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.info_locals
- 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.disable_breakpoint
- DBE_PLDEBUGGER.enable_breakpoint
- DBE_PLDEBUGGER.finish
- DBE_PLDEBUGGER.set_var
- DB4AI Schema
- DBE_PLDEVELOPER
- 工具参考
- 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 53799
- 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
- CM两节点故障问题定位
- 源码解析
- 常见问题解答 (FAQs)
- 术语表
- 通信矩阵
- Mogeaver
TPCC测试优化指南
本章节主要介绍MogDB数据库TPCC测试方法,以及为达到最佳tpmC性能所依赖的关键系统级调优。
硬件环境
-
服务器
- 最佳TPCC结果是使用4路鲲鹏服务器(256C, 512G-1024G内存) + 一个2路鲲鹏服务器
- 常规可使用2个2路鲲鹏服务器,128C, 512G-1024G内存
- 2台X86也可以,但测试指南未使用NUMA优化
-
硬盘
- 数据库端尽可能使用两块NVME闪存卡
- 其次使用3-4块SSD硬盘
-
网卡
- 鲲鹏配套的Hi1822
- X86尽可能使用万兆网卡
软件环境
-
数据库:MogDB 2.1.1
-
TPCC客户端:使用tidb优化过的BenchmarkSQL 5.0(https://github.com/pingcap/benchmarksql)
-
依赖包
所需软件 建议版本 numactl – jdk 1.8.0-242 ant 1.10.5 htop –
测试步骤
-
安装MogDB。参考PTK方式安装,单机部署即可。
-
初始化参数设置,并重启数据库,使参数生效。参考推荐参数设置及新建测试库。
-
下载TPCC标准测试工具BenchmarkSQL5.0。
[root@node151 ~]# git clone -b 5.0-mysql-support-opt-2.1 https://github.com/pingcap/benchmarksql.git Cloning into 'tpcc-mysql'... remote: Enumerating objects: 106, done. remote: Total 106 (delta 0), reused 0 (delta 0), pack-reused 106 Receiving objects: 100% (106/106), 64.46 KiB | 225.00 KiB/s, done. Resolving deltas: 100% (30/30), done.
-
下载安装JDK和ant依赖包。
[root@node151 ~]# rpm -ivh ant-1.10.5-6.oe1.noarch.rpm jdk-8u281-linux-aarch64.rpm --force --nodeps warning: ant-1.10.5-6.oe1.noarch.rpm: Header V3 RSA/SHA1 Signature, key ID b25e7f66: NOKEY warning: jdk-8u281-linux-aarch64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY Verifying... ################################# [100%] Preparing... ################################# [100%] Updating / installing... 1:jdk1.8-2000:1.8.0_281-fcs ################################# [ 50%] Unpacking JAR files... tools.jar... rt.jar... jsse.jar... charsets.jar... localedata.jar... 2:ant-0:1.10.5-6.oe1 ################################# [100%]
-
配置JAVA环境变量
[root@node151 ~]# tail -3 /root/.bashrc export JAVA_HOME=/usr/java/jdk1.8.0_281-aarch64 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:JAVA_HOME/lib:$BENCHMARKSQLPATH/run/ojdbc7.jar
-
在BenchmarkSQL所在目录下输入ant命令进行编译,编译成功后会生成build和dist两个目录。
[root@node151 benchmarksql-5.0-mysql-support-opt-2.1]# pwd /tmp/benchmarksql-5.0-mysql-support-opt-2.1 [root@node151 benchmarksql-5.0-mysql-support-opt-2.1]# ant Buildfile: /tmp/benchmarksql-5.0-mysql-support-opt-2.1/build.xml init: [mkdir] Created dir: /tmp/benchmarksql-5.0-mysql-support-opt-2.1/build compile: [javac] Compiling 12 source files to /tmp/benchmarksql-5.0-mysql-support-opt-2.1/build dist: [mkdir] Created dir: /tmp/benchmarksql-5.0-mysql-support-opt-2.1/dist [jar] Building jar: /tmp/benchmarksql-5.0-mysql-support-opt-2.1/dist/BenchmarkSQL-5.0.jar BUILD SUCCESSFUL Total time: 1 second
-
根据您的系统架构下载对应的JDBC驱动至BenchmarkSQL目录的lib/postgresql文件夹,并解压,删除自带的JDBC驱动。
[root@node151 postgres]# pwd /tmp/benchmarksql-5.0-mysql-support-opt-2.1/lib/postgres/ [root@node151 postgres]# ls openGauss-2.0.0-JDBC.tar.gz postgresql-9.3-1102.jdbc41.jar [root@node151 postgres]# rm -f postgresql-9.3-1102.jdbc41.jar [root@node151 postgres]# tar -xf openGauss-2.0.0-JDBC.tar.gz [root@node151 postgres]# ls openGauss-2.0.0-JDBC.tar.gz postgresql.jar
-
数据库端准备,创建数据库tpcc_db及用户tpcc。
[omm@node151 ~]$ gsql -d postgres -p 26000 -r postgres=# create database tpcc_db; CREATE DATABASE postgres=# \q [omm@node151 ~]$ gsql -d tpcc_db -p 26000 -r tpcc_db=# CREATE USER tpcc WITH PASSWORD "tpcc@123"; CREATE ROLE tpcc_db=# GRANT ALL ON schema public TO tpcc; GRANT tpcc_db=# ALTER User tpcc sysadmin; ALTER ROLE
-
客户端准备,进入BenchmarkSQL目录下的run文件夹,编辑benchmarksql配置文件,修改测试参数,包括数据库用户名、密码、IP、端口、数据库。
[root@node151 db1]# cd /tmp/benchmarksql-5.0-mysql-support-opt-2.1/run [root@node151 run]# vim props.mogdb db=postgres driver=org.opengauss.Driver conn=jdbc:opengauss://172.16.0.176:26000/tpcc_db?prepareThreshold=1&batchMode=on&fetchsize=10&loggerLevel=off #修改连接字符串, 包含IP、端口号、数据库 user=tpcc #用户名 password=tpcc@123 #密码 warehouses=100 #仓位数 terminals=300 #并发数 runMins=5 #运行时间 runTxnsPerTerminal=0 loadWorkers=100 limitTxnsPerMin=0 terminalWarehouseFixed=false newOrderWeight=45 paymentWeight=43 orderStatusWeight=4 deliveryWeight=4 stockLevelWeight=4
-
初始化数据
[root@node151 run]# sh runDatabaseBuild.sh props.mogdb # ------------------------------------------------------------ # Loading SQL file ./sql.common/tableCreates.sql # ------------------------------------------------------------ create table bmsql_config ( cfg_name varchar(30) primary key, cfg_value varchar(50) );
...... # ------------------------------------------------------------ # Loading SQL file ./sql.postgres/buildFinish.sql # ------------------------------------------------------------ -- ---- -- Extra commands to run after the tables are created, loaded, -- indexes built and extra's created. -- PostgreSQL version. -- ---- vacuum analyze;
-
修改runBenchmark.sh文件中funcs.sh所在的实际路径。
[root@node151 run]# vim runBenchmark.sh #!/usr/bin/env bash if [ $# -ne 1 ] ; then echo "usage: $(basename $0) PROPS_FILE" >&2 exit 2 fi SEQ_FILE="./.jTPCC_run_seq.dat" if [ ! -f "${SEQ_FILE}" ] ; then echo "0" > "${SEQ_FILE}" fi SEQ=$(expr $(cat "${SEQ_FILE}") + 1) || exit 1 echo "${SEQ}" > "${SEQ_FILE}" source /tmp/benchmarksql-5.0-mysql-support-opt-2.1/run/funcs.sh $1 #将此处路径修改为文件所在的实际路径 setCP || exit 1 myOPTS="-Dprop=$1 -DrunID=${SEQ}" java -cp "$myCP" $myOPTS jTPCC
-
开始测试,运行tpcc跑分,tpmC部分即为测试结果,结果同时保存在 runLog_mmdd-hh24miss.log 下。
[root@node151 run]# sh runBenchmark.sh props.mogdb| tee runLog_`date +%m%d-%H%M%S`.log ... 15:08:26,663 [Thread-16] INFO jTPCC : Term-00, Measured tpmC (NewOrders) = 106140.46 15:08:26,663 [Thread-16] INFO jTPCC : Term-00, Measured tpmTOTAL = 235800.39 15:08:26,664 [Thread-16] INFO jTPCC : Term-00, Session Start = 2021-08-04 15:03:26 15:08:26,664 [Thread-16] INFO jTPCC : Term-00, Session End = 2021-08-04 15:08:26 15:08:26,664 [Thread-16] INFO jTPCC : Term-00, Transaction Count = 1179449 15:08:26,664 [Thread-16] INFO jTPCC : executeTime[Payment]=29893614 15:08:26,664 [Thread-16] INFO jTPCC : executeTime[Order-Status]=2564424 15:08:26,664 [Thread-16] INFO jTPCC : executeTime[Delivery]=4438389 15:08:26,664 [Thread-16] INFO jTPCC : executeTime[Stock-Level]=4259325 15:08:26,664 [Thread-16] INFO jTPCC : executeTime[New-Order]=48509926
调整props.mogdb,或者使用多个props文件,根据需要进行多次测试。
-
为了避免多次测试导致数据量太大,影响性能,可以把数据清空重新开始。
[root@node151 run]# sh runDatabaseDestroy.sh props.mogdb # ------------------------------------------------------------ # Loading SQL file ./sql.common/tableDrops.sql # ------------------------------------------------------------ drop table bmsql_config; drop table bmsql_new_order; drop table bmsql_order_line; drop table bmsql_oorder; drop table bmsql_history; drop table bmsql_customer; drop table bmsql_stock; drop table bmsql_item; drop table bmsql_district; drop table bmsql_warehouse; drop sequence bmsql_hist_id_seq;
在调试时,可以一次Build, 多次Run,但是如果是正式测试,建议每次都是 Build / Run / Destroy。
调优
1. 主机优化(鲲鹏专享)
调整BIOS
- BIOS>Advanced>MISC Config,配置Support Smmu为Disabled
- BIOS>Advanced>MISC Config,配置CPU Prefetching Configuration为Disabled
- BIOS>Advanced>Memory Config,配置Die Interleaving为Disable
2. 操作系统优化(鲲鹏专享)
-
修改操作系统内核PAGESIZE为64KB(一般默认值)
-
关闭irqbalance
systemctl stop irqbalance
-
调整numa_balance
echo 0 > /proc/sys/kernel/numa_balancing
-
调整透明大页
echo 'never' > /sys/kernel/mm/transparent_hugepage/enabled echo 'never' > /sys/kernel/mm/transparent_hugepage/defrag
-
针对nvme磁盘io队列调度机制设置。
echo none > /sys/block/nvme*n*/queue/scheduler
3. 文件系统配置
-
格式为xfs,数据库大小为8K
mkfs.xfs -b size=8192 /dev/nvme0n1 -f
4. 网络配置
-
网卡多中断队列设置
下载 IN500_solution_5.1.0.SPC401.zip 安装hinicadm
[root@node151 fc]# pwd /root/IN500_solution_5/tools/linux_arm/fc [root@node151 fc]# rpm -ivh hifcadm-2.4.1.0-1.aarch64.rpm Verifying... ################################# [100%] Preparing... ################################# [100%] package hifcadm-2.4.1.0-1.aarch64 is already installed [root@node151 fc]#
-
修改系统支持的最大中断队列数
[root@node151 config]# pwd /root/IN500_solution_5/tools/linux_arm/nic/config [root@node151 config]# ./hinicconfig hinic0 -f std_sh_4x25ge_dpdk_cfg_template0.ini [root@node151 config]# reboot [root@node151 config]# ethtool -L enp3s0 combined 48
不同平台,不同应用的优化值可能不同,当前128核的平台,服务器端调优值为12,客户端调优值为48。
-
中断调优开启tso,lro,gro,gso特性。
ethtool -K enp3s0 tso on ethtool -K enp3s0 lro on ethtool -K enp3s0 gro on ethtool -K enp3s0 gso on
-
网卡固件确认与更新
[root@node151 ~]# ethtool -i enp3s0 driver: hinic version: 2.3.2.11 firmware-version: 2.4.1.0 expansion-rom-version: bus-info: 0000:03:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: no supports-register-dump: no supports-priv-flags: no
网卡固件版本应为2.4.1.0
-
更新网卡固件。
[root@node151 cfg_data_nic_prd_1h_4x25G]# pwd /root/IN500_solution_5/firmware/update_bin/cfg_data_nic_prd_1h_4x25G [root@node151 cfg_data_nic_prd_1h_4x25G]# hinicadm updatefw -i enp3s0 -f /root/IN500_solution_5/firmware/update_bin/cfg_data_nic_prd_1h_4x25G/Hi1822_nic_prd_1h_4x25G.bin
重启服务器,再确认网卡固件版本成功更新为2.4.1.0。
5. 数据库服务端及客户端绑核
-
鲲鹏上numa绑定优化(128核)
-
数据库主机和客户端主机安装numa
yum install numa* -y
网卡驱动安装(包括数据库主机和客户端主机),参考上文网络配置部分。
-
数据库主机
cp `find /opt -name "bind*.sh"|head -1 ` /root sh /root/bind_net_irq.sh 12
设置数据库参数:
thread_pool_attr = '345,4,(cpubind:1-28,32-60,64-92,96-124)' enable_thread_pool = on
关闭数据库 启动数据库命令替换成:
numactl -C 1-28,32-60,64-92,96-124 mogdb --single_node -D /opt/data/db2/ -p 26000 &
-
客户端 拷贝/root/bind_net_irq.sh 到客户端
sh /root/bind_net_irq.sh 48
benchmark启动命令改成
numactl -C 0-19,32-51,64-83,96-115 sh runBenchmark.sh props.mog
-
-
鲲鹏上numa绑定优化(256核)
-
数据库主机和客户端主机安装numa
yum install numa* -y
网卡驱动安装(包括数据库主机和客户端主机),参考上文网络配置部分。
-
数据库主机
cp `find /opt -name "bind*.sh"|head -1 ` /root sh /root/bind_net_irq.sh 24
设置数据库参数:
thread_pool_attr = '696,4,(cpubind:1-28,32-60,64-92,96-124,128-156,160-188,192-220,224-252)' enable_thread_pool = on
关闭数据库 启动数据库命令替换成:
numactl -C 1-28,32-60,64-92,96-124,128-156,160-188,192-220,224-252 mogdb --single_node -D /opt/data/db2/ -p 26000 &
-
客户端 拷贝/root/bind_net_irq.sh 到客户端
sh /root/bind_net_irq.sh 48
benchmark启动命令改成
numactl -C 0-19,32-51,64-83,96-115 sh runBenchmark.sh props.mog
-
6. 数据库参数优化(通用)
修改PGDATA下的postgresql.conf,并重启
max_connections = 4096
allow_concurrent_tuple_update = true
audit_enabled = off
cstore_buffers =16MB
enable_alarm = off
enable_codegen = false
enable_data_replicate = off
full_page_writes = off
max_files_per_process = 100000
max_prepared_transactions = 2048
shared_buffers = 350GB
use_workload_manager = off
wal_buffers = 1GB
work_mem = 1MB
transaction_isolation = 'read committed'
default_transaction_isolation = 'read committed'
synchronous_commit = on
fsync = on
maintenance_work_mem = 2GB
vacuum_cost_limit = 2000
autovacuum = on
autovacuum_mode = vacuum
autovacuum_vacuum_cost_delay =10
xloginsert_locks = 48
update_lockwait_timeout =20min
enable_mergejoin = off
enable_nestloop = off
enable_hashjoin = off
enable_bitmapscan = on
enable_material = off
wal_log_hints = off
log_duration = off
checkpoint_timeout = 15min
autovacuum_vacuum_scale_factor = 0.1
autovacuum_analyze_scale_factor = 0.02
enable_save_datachanged_timestamp =FALSE
log_timezone = 'PRC'
timezone = 'PRC'
lc_messages = 'C'
lc_monetary = 'C'
lc_numeric = 'C'
lc_time = 'C'
enable_double_write = on
enable_incremental_checkpoint = on
enable_opfusion = on
numa_distribute_mode = 'all'
track_activities = off
enable_instr_track_wait = off
enable_instr_rt_percentile = off
track_counts =on
track_sql_count = off
enable_instr_cpu_timer = off
plog_merge_age = 0
session_timeout = 0
enable_instance_metric_persistent = off
enable_logical_io_statistics = off
enable_user_metric_persistent =off
enable_xlog_prune = off
enable_resource_track = off
instr_unique_sql_count = 0
enable_beta_opfusion = on
enable_thread_pool = on
#0核用于walwriter线程绑核
enable_partition_opfusion=off
wal_writer_cpu=0
xlog_idle_flushes_before_sleep = 500000000
max_io_capacity = 2GB
dirty_page_percent_max = 0.1
candidate_buf_percent_target = 0.7
bgwriter_delay = 500
pagewriter_sleep = 30
checkpoint_segments =10240
advance_xlog_file_num = 100
autovacuum_max_workers = 20
autovacuum_naptime = 5s
bgwriter_flush_after = 256kB
data_replicate_buffer_size = 16MB
enable_stmt_track = off
remote_read_mode=non_authentication
wal_level = archive
hot_standby = off
hot_standby_feedback = off
client_min_messages = ERROR
log_min_messages = FATAL
enable_asp = off
enable_bbox_dump = off
enable_ffic_log = off
enable_twophase_commit = off
minimum_pool_size = 200
wal_keep_segments = 1025
incremental_checkpoint_timeout = 5min
max_process_memory = 12GB
vacuum_cost_limit = 10000
xloginsert_locks = 8
wal_writer_delay = 100
wal_file_init_num = 30
wal_level=minimal
max_wal_senders=0
fsync=off
synchronous_commit = off
enable_indexonlyscan=on
thread_pool_attr = '345,4,(cpubind:1-28,32-60,64-92,96-124)'
enable_page_lsn_check = off
enable_double_write = off
7. benchmarksql调优
-
连接串
conn=jdbc:opengauss://10.10.10.40:26000/tpcc?prepareThreshold=1&batchMode=on&fetchsize=10&loggerLevel=off
-
修改文件内容将数据分散,调整FILLFACTOR,数据分区。
[root@node151 ~]# ls benchmarksql-5.0-mysql-support-opt-2.1/run/sql.common/tableCreates.sql benchmarksql-5.0-mysql-support-opt-2.1/run/sql.common/tableCreates.sql [root@node151 sql.common]# cat tableCreates.sql CREATE TABLESPACE example2 relative location 'tablespace2'; CREATE TABLESPACE example3 relative location 'tablespace3'; create table bmsql_config ( cfg_name varchar(30), cfg_value varchar(50) ); create table bmsql_warehouse ( w_id integer not null, w_ytd decimal(12,2), w_tax decimal(4,4), w_name varchar(10), w_street_1 varchar(20), w_street_2 varchar(20), w_city varchar(20), w_state char(2), w_zip char(9) ) WITH (FILLFACTOR=80); create table bmsql_district ( d_w_id integer not null, d_id integer not null, d_ytd decimal(12,2), d_tax decimal(4,4), d_next_o_id integer, d_name varchar(10), d_street_1 varchar(20), d_street_2 varchar(20), d_city varchar(20), d_state char(2), d_zip char(9) ) WITH (FILLFACTOR=80); create table bmsql_customer ( c_w_id integer not null, c_d_id integer not null, c_id integer not null, c_discount decimal(4,4), c_credit char(2), c_last varchar(16), c_first varchar(16), c_credit_lim decimal(12,2), c_balance decimal(12,2), c_ytd_payment decimal(12,2), c_payment_cnt integer, c_delivery_cnt integer, c_street_1 varchar(20), c_street_2 varchar(20), c_city varchar(20), c_state char(2), c_zip char(9), c_phone char(16), c_since timestamp, c_middle char(2), c_data varchar(500) ) WITH (FILLFACTOR=80) tablespace example2; create sequence bmsql_hist_id_seq; create table bmsql_history ( hist_id integer, h_c_id integer, h_c_d_id integer, h_c_w_id integer, h_d_id integer, h_w_id integer, h_date timestamp, h_amount decimal(6,2), h_data varchar(24) ) WITH (FILLFACTOR=80); create table bmsql_new_order ( no_w_id integer not null, no_d_id integer not null, no_o_id integer not null ) WITH (FILLFACTOR=80); create table bmsql_oorder ( o_w_id integer not null, o_d_id integer not null, o_id integer not null, o_c_id integer, o_carrier_id integer, o_ol_cnt integer, o_all_local integer, o_entry_d timestamp ) WITH (FILLFACTOR=80); create table bmsql_order_line ( ol_w_id integer not null, ol_d_id integer not null, ol_o_id integer not null, ol_number integer not null, ol_i_id integer not null, ol_delivery_d timestamp, ol_amount decimal(6,2), ol_supply_w_id integer, ol_quantity integer, ol_dist_info char(24) ) WITH (FILLFACTOR=80); create table bmsql_item ( i_id integer not null, i_name varchar(24), i_price decimal(5,2), i_data varchar(50), i_im_id integer ); create table bmsql_stock ( s_w_id integer not null, s_i_id integer not null, s_quantity integer, s_ytd integer, s_order_cnt integer, s_remote_cnt integer, s_data varchar(50), s_dist_01 char(24), s_dist_02 char(24), s_dist_03 char(24), s_dist_04 char(24), s_dist_05 char(24), s_dist_06 char(24), s_dist_07 char(24), s_dist_08 char(24), s_dist_09 char(24), s_dist_10 char(24) ) WITH (FILLFACTOR=80) tablespace example3;
8.数据库文件位置优化(通用)
通过将默认主目录、xlog、example2、example3分开多个底层磁盘来避免I/O瓶颈。 如果只有2个性能好的盘,优先移走xlog,如果有3个,优先xlog+ example2。 分开的示例方法如下:
PGDATA=/opt/data/mogdb
cd $PGDATA
mv pg_xlog /tpccdir1
ln -s /tpccdir1/pg_xlog .
cd pg_location
mv tablespace2 /tpccdir2
ln -s /tpccdir2/tablespace2 .
mv tablespace3 /tpccdir3
ln -s /tpccdir3/tablespace3 .
9.观察系统资源工具
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htop 观察CPU使用情况,arm平台需要从源码编译。
使用htop监控数据库服务端和tpcc客户端CPU利用情况,最佳性能测试情况下,各个业务CPU的占用率都非常高(> 90%)。如果有CPU占用率没有达标,可能是绑核方式不对或其他问题,需要定位找到根因进行调整。
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iostat 查看系统IO使用情况。
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sar 查看网络使用情况。
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nmon 作为系统资源整体监控。
部分数据截图
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数据库htop
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客户端htop
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iostat 查看系统IO使用情况
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sar 查看网络使用情况
理想结果
4路鲲鹏 256C, 1000仓500并发:250W TPMC
2路鲲鹏服务器 100仓100并发:90W
2路鲲鹏服务器 100仓300并发:140W