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pg_export_snapshot()
返回值类型：text
pg_export_snapshot_and_csn()
返回值类型：text
快照同步函数
- 发行说明
- 开发者指南
- 管理数据库安全
- WDR Snapshot Schema
- 导出数据
- 自治事务
- 常见故障定位指南
- 常见故障定位手段
- 常见故障定位案例
- 高并发报错”too many clients already”或无法创建线程
- 出现“Error:No space left on device”提示
- 磁盘空间达到阈值，数据库只读
- 不同用户查询同表显示数据不同
- 服务启动失败
- 执行修改表分区操作时报错
- 备机处于need repair(WAL)状态问题
- 在XFS文件系统中，使用du命令查询数据文件大小大于文件实际大小
- 分析查询语句长时间运行的问题
- 强制结束指定的问题会话
- 分析查询语句是否被阻塞
- 重建索引失败
- 分析查询效率异常降低的问题
- TPCC运行时，注入磁盘满故障，TPCC卡住的问题
- 修改索引时只调用索引名提示索引不存在
- core问题定位
- switchover操作时，主机降备卡住
- 在XFS文件系统中，出现文件损坏
- VACUUM FULL一张表后，表文件大小无变化
- 内存不足问题
- 执行 SQL 语句时，提示 Lock wait timeout
- 分析查询语句运行状态
- 业务运行时整数转换错
- btree 索引故障情况下应对策略
- 错误码参考
- GAUSS-00101 – GAUSS-00200
- GAUSS-03601 – GAUSS-03700
- GAUSS-03201 – GAUSS-03300
- GAUSS-00801 – GAUSS-00900
- GAUSS-01901 – GAUSS-02000
- GAUSS-00701 – GAUSS-00800
- GAUSS-00901 – GAUSS-01000
- GAUSS-05501 – GAUSS-05600
- GAUSS-06601 – GAUSS-06700
- GAUSS-01201 – GAUSS-01300
- GAUSS-52000 – GAUSS-52999
- GAUSS-06701 – GAUSS-06800
- GAUSS-00601 – GAUSS-00700
- GAUSS-06501 – GAUSS-06600
- GAUSS-06801 – GAUSS-06900
- GAUSS-02801 – GAUSS-02900
- GAUSS-01101 – GAUSS-01200
- GAUSS-02301 – GAUSS-02400
- GAUSS-02901 – GAUSS-03000
- 第三方库错误码说明
- GAUSS-00501 – GAUSS-00600
- GAUSS-04401 – GAUSS-04500
- GAUSS-04001 – GAUSS-04100
- GAUSS-07301 – GAUSS-07400
- GAUSS-03301 – GAUSS-03400
- SQL标准错误码说明
- GAUSS-02501 – GAUSS-02600
- GAUSS-03901 – GAUSS-04000
- GAUSS-06301 – GAUSS-06400
- GAUSS-04301 – GAUSS-04400
- GAUSS-04601 – GAUSS-04700
- GAUSS-04701 – GAUSS-04800
- GAUSS-01701 – GAUSS-01800
- GAUSS-04801 – GAUSS-04900
- GAUSS-01401 – GAUSS-01500
- GAUSS-02601 – GAUSS-02700
- GAUSS-50000 – GAUSS-50999
- GAUSS-02201 – GAUSS-02300
- GAUSS-05301 – GAUSS-05400
- GAUSS-06201 – GAUSS-06300
- GAUSS-05801 – GAUSS-05900
- GAUSS-06401 – GAUSS-06500
- GAUSS-03101 – GAUSS-03200
- GAUSS-03501 – GAUSS-03600
- GAUSS-05701 – GAUSS-05800
- GAUSS-02001 – GAUSS-02100
- GAUSS-07001 – GAUSS-07100
- GAUSS-07201 – GAUSS-07300
- GAUSS-00201 – GAUSS-00300
- GAUSS-00401 – GAUSS-00500
- GAUSS-05601 – GAUSS-05700
- GAUSS-53000 – GAUSS-53999
- GAUSS-01301 – GAUSS-01400
- GAUSS-07401 – GAUSS-07500
- GAUSS-00301 – GAUSS-00400
- GAUSS-06901 – GAUSS-07000
- GAUSS-02101 – GAUSS-02200
- GAUSS-05001 – GAUSS-05100
- GAUSS-03401 – GAUSS-03500
- GAUSS-01501 – GAUSS-01600
- GAUSS-04901 – GAUSS-04999
- GAUSS-00001 – GAUSS-00100
- GAUSS-02401 – GAUSS-02500
- GAUSS-05201– GAUSS-05300
- GAUSS-03701 – GAUSS-03800
- GAUSS-03001 – GAUSS-03100
- GAUSS-05401 – GAUSS-05500
- GAUSS-01601 – GAUSS-01700
- GAUSS-06001 – GAUSS-06100
- GAUSS-05101 – GAUSS-05200
- GAUSS-07101 – GAUSS-07200
- GAUSS-01801 – GAUSS-01900
- GAUSS-05901 – GAUSS-06000
- GAUSS-04201 – GAUSS-04300
- GAUSS-02701 – GAUSS-02800
- GAUSS-04101 – GAUSS-04200
- GAUSS-03801 – GAUSS-03900
- GAUSS-01001 – GAUSS-01100
- GAUSS-06101 – GAUSS-06200
- GAUSS-04501 – GAUSS-04600
- GAUSS-51000 – GAUSS-51999
- 逻辑复制
- 接口参考
- libpq
- ODBC
- JDBC
- javax.sql.PooledConnection
- java.sql.CallableStatement
- java.sql.ResultSet
- CopyManager
- javax.naming.spi.InitialContextFactory
- java.sql.Connection
- java.sql.Statement
- java.sql.Driver
- java.sql.DatabaseMetaData
- java.sql.PreparedStatement
- java.sql.ResultSetMetaData
- javax.naming.Context
- javax.sql.ConnectionPoolDataSource
- javax.sql.DataSource
- 存储过程
- 数据库使用
- Foreign Data Wrapper
- 应用程序开发教程
- 内存表特性
- 配置运行参数
- 系统表和系统视图
- 系统表
- PG_OPCLASS
- PG_LARGEOBJECT_METADATA
- PG_SHDEPEND
- PG_DEPEND
- PG_CONSTRAINT
- PG_OPERATOR
- PG_TS_TEMPLATE
- PG_DESCRIPTION
- PG_WORKLOAD_GROUP
- PG_SHDESCRIPTION
- PG_ATTRDEF
- PG_TS_CONFIG
- PG_DATABASE
- PG_USER_STATUS
- PG_TYPE
- PG_FOREIGN_DATA_WRAPPER
- GS_WLM_INSTANCE_HISTORY
- PG_NAMESPACE
- PG_COLLATION
- PG_AMOP
- GS_COLUMN_KEYS
- GS_ENCRYPTED_COLUMNS
- PG_INDEX
- PG_RLSPOLICY
- PG_CONVERSION
- PG_FOREIGN_SERVER
- PG_SHSECLABEL
- PG_FOREIGN_TABLE
- PG_DB_ROLE_SETTING
- PG_DEFAULT_ACL
- PG_OBJECT
- GS_COLUMN_KEYS_ARGS
- PG_PLTEMPLATE
- PG_LARGEOBJECT
- PG_PROC
- PG_AGGREGATE
- GS_WLM_PLAN_ENCODING_TABLE
- PG_JOB_PROC
- PG_RESOURCE_POOL
- PG_STATISTIC_EXT
- PG_AMPROC
- PG_LANGUAGE
- GS_OPT_MODEL
- PG_AUTH_HISTORY
- PG_PARTITION
- PG_ATTRIBUTE
- PG_USER_MAPPING
- PG_SECLABEL
- GS_WLM_PLAN_OPERATOR_INFO
- PG_AUTH_MEMBERS
- PG_CAST
- PG_TRIGGER
- GS_WLM_OPERATOR_INFO
- PG_TS_CONFIG_MAP
- PG_TABLESPACE
- PG_OPFAMILY
- PG_EXTENSION_DATA_SOURCE
- PG_CLASS
- PG_APP_WORKLOADGROUP_MAPPING
- PG_ENUM
- PG_TS_DICT
- GS_WLM_USER_RESOURCE_HISTORY
- GS_CLIENT_GLOBAL_KEYS
- PG_AUTHID
- PG_TS_PARSER
- PLAN_TABLE_DATA
- GS_CLIENT_GLOBAL_KEYS_ARGS
- PG_AM
- PG_STATISTIC
- PG_JOB
- PG_INHERITS
- PG_REWRITE
- PG_DIRECTORY
- PG_RANGE
- PG_EXTENSION
- 系统表和系统视图概述
- 系统视图
- GS_WLM_RESOURCE_POOL
- GS_WLM_REBUILD_USER_RESOURCE_POOL
- PG_TOTAL_USER_RESOURCE_INFO
- GS_WLM_PLAN_OPERATOR_HISTORY
- MPP_TABLES
- PG_MATVIEWS
- PG_STATIO_ALL_INDEXES
- PG_STATIO_USER_SEQUENCES
- GS_THREAD_MEMORY_CONTEXT
- GS_WLM_OPERATOR_HISTORY
- PG_STATIO_SYS_TABLES
- PG_GET_INVALID_BACKENDS
- PG_STAT_XACT_ALL_TABLES
- GS_SESSION_STAT
- PG_SHADOW
- GS_INSTANCE_TIME
- PG_INDEXES
- GS_SESSION_MEMORY_DETAIL
- PG_GET_SENDERS_CATCHUP_TIME
- GS_OS_RUN_INFO
- PG_SECLABELS
- PG_STATIO_USER_TABLES
- PG_THREAD_WAIT_STATUS
- PG_AVAILABLE_EXTENSION_VERSIONS
- PG_SESSION_WLMSTAT
- GS_WLM_USER_INFO
- PG_VIEWS
- PG_RLSPOLICIES
- PG_STAT_ACTIVITY
- PG_USER
- PG_GTT_ATTACHED_PIDS
- PG_ROLES
- GS_THREAD_MEMORY_DETAIL
- PG_STAT_ALL_INDEXES
- GS_SESSION_MEMORY_STATISTICS
- PG_CURSORS
- GS_SESSION_MEMORY
- PG_EXT_STATS
- GS_SQL_COUNT
- PG_VARIABLE_INFO
- PG_STATIO_SYS_INDEXES
- PG_LOCKS
- PG_STATS
- PG_TOTAL_USER_RESOURCE_INFO_OID
- PG_OS_THREADS
- PG_STATIO_ALL_TABLES
- PG_GTT_RELSTATS
- GS_FILE_STAT
- PG_STATIO_ALL_SEQUENCES
- PG_WLM_STATISTICS
- PG_AVAILABLE_EXTENSIONS
- PG_STAT_XACT_USER_TABLES
- PG_STAT_ALL_TABLES
- PG_GTT_STATS
- PG_STAT_USER_FUNCTIONS
- PG_TIMEZONE_NAMES
- PG_TIMEZONE_ABBREVS
- PG_SETTINGS
- PG_STAT_DATABASE_CONFLICTS
- PG_USER_MAPPINGS
- GS_REDO_STAT
- PG_RULES
- PG_STAT_XACT_USER_FUNCTIONS
- GS_SESSION_TIME
- PG_REPLICATION_SLOTS
- GS_STAT_SESSION_CU
- PG_TABLES
- PG_STAT_REPLICATION
- GS_WLM_SESSION_INFO_ALL
- PG_STAT_BGWRITER
- PG_STAT_SYS_TABLES
- PG_SESSION_IOSTAT
- GS_WLM_SESSION_HISTORY
- GS_WLM_OPERATOR_STATISTICS
- PG_STAT_USER_INDEXES
- PG_STAT_SYS_INDEXES
- PG_NODE_ENV
- PG_STAT_BAD_BLOCK
- PG_STAT_USER_TABLES
- PG_TDE_INFO
- PG_STATIO_USER_INDEXES
- PLAN_TABLE
- GS_SESSION_CPU_STATISTICS
- PG_STAT_XACT_SYS_TABLES
- PG_STATIO_SYS_SEQUENCES
- PG_PREPARED_XACTS
- GS_WLM_SESSION_STATISTICS
- PG_GROUP
- PG_PREPARED_STATEMENTS
- PG_STAT_DATABASE
- 系统表
- 用户自定义函数
- SQL参考
- 函数和操作符
- DDL语法一览表
- 类型转换
- 数据类型
- 表达式
- SQL语法
- ALTER SYNONYM
- CREATE RULE
- UPDATE
- DROP OWNED
- DROP ROW LEVEL SECURITY POLICY
- ROLLBACK
- CREATE FOREIGN TABLE
- ALTER DIRECTORY
- ALTER TEXT SEARCH DICTIONARY
- COMMENT
- ALTER INDEX
- ALTER SERVER
- SET TRANSACTION
- CREATE DATABASE
- CREATE SCHEMA
- SHOW
- CURSOR
- ALTER DATABASE
- CREATE TABLE PARTITION
- CALL
- ABORT
- DROP PROCEDURE
- SET ROLE
- CREATE SERVER
- DROP VIEW
- DROP TYPE
- DO
- DROP TABLE
- ALTER RULE
- CREATE SEQUENCE
- DROP COLUMN ENCRYPTION KEY
- ALTER TABLE
- SELECT
- DROP FOREIGN TABLE
- DROP TRIGGER
- ALTER SEQUENCE
- ALTER ROLE
- CREATE VIEW
- ROLLBACK TO SAVEPOINT
- ALTER SESSION
- REASSIGN OWNED
- MERGE INTO
- DELETE
- CREATE DIRECTORY
- MOVE
- CREATE TEXT SEARCH CONFIGURATION
- ALTER USER MAPPING
- START TRANSACTION
- ROLLBACK PREPARED
- CREATE CLIENT MASTER KEY
- COMMIT PREPARED
- CREATE INDEX
- CREATE ROLE
- CREATE TABLESPACE
- VACUUM
- DECLARE
- DROP SCHEMA
- CREATE ROW LEVEL SECURITY POLICY
- DROP TEXT SEARCH CONFIGURATION
- ALTER GROUP
- DROP RULE
- DROP CLIENT MASTER KEY
- TRUNCATE
- CREATE TEXT SEARCH DICTIONARY
- CREATE USER
- BEGIN
- DROP DIRECTORY
- DROP SYNONYM
- INSERT
- ALTER DEFAULT PRIVILEGES
- ALTER USER
- COPY
- CHECKPOINT
- RESET
- DEALLOCATE
- ALTER TABLE PARTITION
- CREATE TYPE
- SHUTDOWN
- ALTER FOREIGN TABLE
- CREATE TABLE
- DROP SERVER
- EXECUTE
- ALTER VIEW
- DROP USER MAPPING
- ALTER MATERIALIZED VIEW
- DROP INDEX
- CLUSTER
- CREATE PROCEDURE
- REVOKE
- SELECT INTO
- ALTER TABLESPACE
- COMMIT | END
- ALTER SYSTEM SET
- DROP ROLE
- ALTER FUNCTION
- ALTER DATA SOURCE
- CREATE SYNONYM
- CREATE MATERIALIZED VIEW
- CREATE GROUP
- SAVEPOINT
- PREPARE
- EXPLAIN PLAN
- SET SESSION AUTHORIZATION
- ALTER SCHEMA
- DROP GROUP
- RELEASE SAVEPOINT
- SET
- CREATE DATA SOURCE
- DROP SEQUENCE
- REINDEX
- ANALYZE | ANALYSE
- DROP TEXT SEARCH DICTIONARY
- VALUES
- LOCK
- PREPARE TRANSACTION
- REFRESH MATERIALIZED VIEW
- DROP TABLESPACE
- ALTER TEXT SEARCH CONFIGURATION
- ALTER ROW LEVEL SECURITY POLICY
- CREATE TRIGGER
- FETCH
- DROP DATA SOURCE
- GRANT
- CREATE TABLE AS
- ALTER TRIGGER
- EXPLAIN
- ALTER LARGE OBJECT
- CREATE FUNCTION
- SET CONSTRAINTS
- DROP USER
- DROP DATABASE
- CREATE USER MAPPING
- CREATE COLUMN ENCRYPTION KEY
- CLOSE
- DROP MATERIALIZED VIEW
- DROP FUNCTION
- ALTER TYPE
- ALTER SYSTEM KILL SESSION
- 常量与宏
- 系统操作
- DCL语法一览表
- 关键字
- openGauss SQL
- DML语法一览表
- 事务控制
- 全文检索
- 附录
- 物化视图
- DBE_PERF Schema
- Query
- SUMMARY_STATEMENT
- STATEMENT_HISTORY
- STATEMENT_USER_COMPLEX_HISTORY
- STATEMENT_COMPLEX_HISTORY
- GLOBAL_STATEMENT_COMPLEX_HISTORY_TABLE
- STATEMENT_RESPONSETIME_PERCENTILE
- STATEMENT_COMPLEX_HISTORY_TABLE
- STATEMENT_COMPLEX_RUNTIME
- STATEMENT_COUNT
- STATEMENT_WLMSTAT_COMPLEX_RUNTIME
- GLOBAL_STATEMENT_COMPLEX_RUNTIME
- GLOBAL_STATEMENT_COUNT
- STATEMENT
- GLOBAL_STATEMENT_COMPLEX_HISTORY
- SUMMARY_STATEMENT_COUNT
- Operator
- Configuration
- Instance
- OS
- Workload Manager
- File
- Transaction
- Global Plancache
- Lock
- Object
- STAT_DATABASE_CONFLICTS
- STAT_ALL_INDEXES
- GLOBAL_STAT_USER_FUNCTIONS
- SUMMARY_STAT_ALL_TABLES
- SUMMARY_STAT_XACT_USER_FUNCTIONS
- SUMMARY_STAT_XACT_SYS_TABLES
- SUMMARY_STAT_ALL_INDEXES
- SUMMARY_STAT_USER_TABLES
- STAT_XACT_SYS_TABLES
- GLOBAL_STAT_ALL_TABLES
- STAT_DATABASE
- SUMMARY_STAT_BAD_BLOCK
- GLOBAL_STAT_ALL_INDEXES
- STAT_ALL_TABLES
- GLOBAL_STAT_XACT_SYS_TABLES
- GLOBAL_STAT_SYS_TABLES
- SUMMARY_STAT_DATABASE_CONFLICTS
- GLOBAL_STAT_BAD_BLOCK
- STAT_USER_INDEXES
- GLOBAL_STAT_XACT_USER_TABLES
- GLOBAL_STAT_DATABASE_CONFLICTS
- STAT_USER_FUNCTIONS
- GLOBAL_STAT_USER_INDEXES
- SUMMARY_STAT_DATABASE
- SUMMARY_STAT_SYS_TABLES
- STAT_USER_TABLES
- GLOBAL_STAT_SYS_INDEXES
- STAT_SYS_TABLES
- SUMMARY_STAT_SYS_INDEXES
- STAT_SYS_INDEXES
- GLOBAL_STAT_XACT_USER_FUNCTIONS
- SUMMARY_STAT_XACT_USER_TABLES
- SUMMARY_STAT_USER_INDEXES
- GLOBAL_STAT_DATABASE
- STAT_XACT_USER_TABLES
- STAT_BAD_BLOCK
- GLOBAL_STAT_USER_TABLES
- GLOBAL_STAT_XACT_ALL_TABLES
- SUMMARY_STAT_XACT_ALL_TABLES
- SUMMARY_STAT_USER_FUNCTIONS
- STAT_XACT_USER_FUNCTIONS
- STAT_XACT_ALL_TABLES
- Wait Events
- Cache/IO
- STATIO_SYS_SEQUENCES
- STATIO_ALL_TABLES
- STATIO_ALL_INDEXES
- STATIO_ALL_SEQUENCES
- GLOBAL_STATIO_ALL_SEQUENCES
- SUMMARY_STATIO_USER_SEQUENCES
- STATIO_SYS_INDEXES
- GLOBAL_STAT_DB_CU
- GLOBAL_STATIO_USER_SEQUENCES
- SUMMARY_STATIO_SYS_INDEXES
- GLOBAL_STATIO_ALL_TABLES
- SUMMARY_STATIO_SYS_SEQUENCES
- SUMMARY_STATIO_ALL_TABLES
- GLOBAL_STATIO_SYS_INDEXES
- GLOBAL_STATIO_USER_TABLES
- SUMMARY_STATIO_ALL_INDEXES
- STATIO_USER_SEQUENCES
- GLOBAL_STATIO_SYS_SEQUENCES
- GLOBAL_STATIO_ALL_INDEXES
- STATIO_SYS_TABLES
- GLOBAL_STATIO_SYS_TABLES
- SUMMARY_STATIO_USER_TABLES
- SUMMARY_STATIO_USER_INDEXES
- STATIO_USER_TABLES
- STATIO_USER_INDEXES
- GLOBAL_STAT_SESSION_CU
- SUMMARY_STATIO_ALL_SEQUENCES
- SUMMARY_STATIO_SYS_TABLES
- GLOBAL_STATIO_USER_INDEXES
- Utility
- REPLICATION_SLOTS
- GLOBAL_CKPT_STATUS
- GLOBAL_REPLICATION_STAT
- REPLICATION_STAT
- GLOBAL_RECORD_RESET_TIME
- GLOBAL_GET_BGWRITER_STATUS
- GLOBAL_PAGEWRITER_STATUS
- SUMMARY_USER_LOGIN
- GLOBAL_REDO_STATUS
- BGWRITER_STAT
- USER_LOGIN
- GLOBAL_BGWRITER_STAT
- GLOBAL_REPLICATION_SLOTS
- GLOBAL_DOUBLE_WRITE_STATUS
- CLASS_VITAL_INFO
- GLOBAL_RECOVERY_STATUS
- Session/Thread
- GLOBAL_THREADPOOL_STATUS
- SESSION_STAT_ACTIVITY
- SESSION_MEMORY
- SESSION_TIME
- LOCAL_THREADPOOL_STATUS
- SESSION_MEMORY_RUNTIME
- GLOBAL_THREAD_WAIT_STATUS
- GLOBAL_SESSION_TIME
- GLOBAL_SESSION_STAT_ACTIVITY
- SESSION_STAT
- SESSION_MEMORY_DETAIL
- THREAD_WAIT_STATUS
- GLOBAL_SESSION_STAT
- SESSION_CPU_RUNTIME
- GLOBAL_SESSION_MEMORY_DETAIL
- STATEMENT_IOSTAT_COMPLEX_RUNTIME
- GLOBAL_SESSION_MEMORY
- Memory
- Workload
- Query
- AI特性
- GUC参数说明
- 概述
- 导入数据
- 性能调优
- 编译指导书
- 安装指南
- FAQ
- 法律声明
- 技术白皮书
- 快速入门
- 术语表
- 管理员指南
- 产品描述
- 工具参考
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