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        • Configuring a Data Source in the Windows OS - GaussDB(DWS)

          Configuring a Data Source in the Windows OS - GaussDB(DWS)

          For security purposes, you are advised to delete sensitive information before clicking Save and enter the required username and password again when using ODBC APIs to connect to the database. Enable the SSL mode.

          Help > GaussDB(DWS) > Standard Data Warehouse (9.1.0.x) > Using JDBC or ODBC for GaussDB(DWS) Secondary Development > ODBC-Based Development
        • Miscellaneous Parameters - GaussDB(DWS)

          Miscellaneous Parameters - GaussDB(DWS)

          In this way, when any two of the DELTAMERGE, UPDATE, and DELETE operations are concurrently performed, an operation can be performed only after the previous one is complete.

          Help > GaussDB(DWS) > Standard Data Warehouse (8.1.3.x) > GUC Parameters of the GaussDB(DWS) Database
        • New Features in 8.1.3 - GaussDB(DWS)

          New Features in 8.1.3 - GaussDB(DWS)

          In the AT syntax, all syntax, except for SPLIT, is similar to range partitioning. 8 ALTER TABLE ADD INDEX/DROP INDEX The ALTER TABLE syntax branch is added to add and delete indexes. 9 CREATE TABLE ... LIKE The CREATE TABLE...

          Help > GaussDB(DWS) > Product Bulletin > Product Notice > Version 8.1.3
        • CREATE TABLE - GaussDB(DWS)

          CREATE TABLE - GaussDB(DWS)

          Persistently stores UPDATE, DELETE, and INSERT information. It is used to restore the memory structure that manages concurrent updates, such as the memory update chain, in the case of a fault.

          Help > GaussDB(DWS) > Hybrid Data Warehouse (8.1.3.x) > Hybrid Data Warehouse Syntax
        • Common Performance Parameter Optimization Design - GaussDB(DWS)

          Common Performance Parameter Optimization Design - GaussDB(DWS)

          Simple query jobs (which are estimated to require less than 32 MB memory) and non-DML statements (statements other than INSERT, UPDATE, DELETE, and SELECT) have no adaptive load restrictions. Control the upper memory limits for them on a single CN using max_active_statements.

          Help > GaussDB(DWS) > Performance Tuning
        • GDS Practice Guide - GaussDB(DWS)

          GDS Practice Guide - GaussDB(DWS)

          Do not put too many files under a data directory, and delete expired files in a timely manner. Properly plan the character set of the target database. You are advised to use UTF8 instead of the SQL_ASCII characters which can easily incur mixed encoding.

          Help > GaussDB(DWS) > Best Practices > Import and Export
        • LOB Functions - GaussDB(DWS)

          LOB Functions - GaussDB(DWS)

          DBMS_LOB.FREETEMPORARY is used to delete the temporary LOB and its index.

          Help > GaussDB(DWS) > Tool Guide > DSC > Oracle Syntax Migration > System Functions
        • Real-time Top SQL - GaussDB(DWS)

          Real-time Top SQL - GaussDB(DWS)

          DML statements are recorded, including: the execution of SELECT, INSERT, UPDATE, and DELETE the execution of EXPLAIN ANALYZE and EXPLAIN PERFORMANCE the use of the query-level or perf-level views The entry statements for invoking functions and stored procedures are recorded.

          Help > GaussDB(DWS) > Standard Data Warehouse (9.1.0.x) > GaussDB(DWS) Resource Monitoring
        • CREATE TABLE - GaussDB(DWS)

          CREATE TABLE - GaussDB(DWS)

          If an error occurs during table creation, after it is fixed, the system may fail to delete the empty disk files created before the last automatic clearance. This problem seldom occurs.

          Help > GaussDB(DWS) > SQL Syntax Reference (9.1.0.x) > DDL Syntax
        • Querying Cluster Details - GaussDB(DWS)

          Querying Cluster Details - GaussDB(DWS)

          DELETING_NODE: Delete a node. DELETE_NODE_FAILED: Failed to delete the node. REDISTRIBUTING REDISTRIBUTE_FAILURE: Redistribution failed. WAITING_REDISTRIBUTION: Waiting to be redistributed REDISTRIBUTION_PAUSED: Redistribution is paused. ELB_BINDING: ELB is being bound.

          Help > GaussDB(DWS) > API Reference > API Description > Cluster Management
        • Data Import and Export Faults with GDS - GaussDB(DWS)

          Data Import and Export Faults with GDS - GaussDB(DWS)

          If you delete these values from the postgresql.conf file, the server will inherit the settings from its execution environment.

          Help > GaussDB(DWS) > Troubleshooting > Data Import and Export
        • Yearly/Monthly - GaussDB(DWS)

          Yearly/Monthly - GaussDB(DWS)

          Add or delete CN nodes. Add nodes. Add disk capacity. If the yearly/monthly GaussDB(DWS) is not renewed after the grace period ends, its status turns to Frozen and it enters a retention period. You cannot perform any operations on the ECS while it is in the retention period.

          Help > GaussDB(DWS) > Billing > Billing Modes
        • Viewing GaussDB(DWS) Database Audit Logs - GaussDB(DWS)

          Viewing GaussDB(DWS) Database Audit Logs - GaussDB(DWS)

          DML operations Whether to record INSERT, UPDATE, and DELETE operations on tables. This parameter is disabled by default. NOTE: 8.1.1.100 and later versions support fine-grained splitting of audit items, and the COPY and MERGE options are added.

          Help > GaussDB(DWS) > User Guide > GaussDB(DWS) Cluster O&M > GaussDB(DWS) Cluster Log Management
        • Communication Library Parameters - GaussDB(DWS)

          Communication Library Parameters - GaussDB(DWS)

          Enabling this parameter for a session with temporary tables will delete the temporary table data on DNs and prevent further actions on those tables. comm_quota_size Parameter description: Specifies the maximum size of packets that can be continuously sent by the communication library

          Help > GaussDB(DWS) > Standard Data Warehouse (9.1.0.x) > GUC Parameters of the GaussDB(DWS) Database > Connection and Authentication
        • Statistics Information Functions - GaussDB(DWS)

          Statistics Information Functions - GaussDB(DWS)

          Return type: timestamptz pg_stat_set_last_data_changed_time(oid) Description: Manually changes the time when INSERT, UPDATE, DELETE, or EXCHANGE/TRUNCATE/DROP PARTITION was performed last time.

          Help > GaussDB(DWS) > SQL Syntax Reference (9.1.0.x) > Functions and Operators
        • CREATE FOREIGN TABLE (for GDS Import and Export) - GaussDB(DWS)

          CREATE FOREIGN TABLE (for GDS Import and Export) - GaussDB(DWS)

          If this parameter is set to true or on, the GDS process will automatically delete a named pipe file. If this parameter is set to false or off, the GDS process will not delete a named pipe file. When setting del_pipe, set file_type to pipe.

          Help > GaussDB(DWS) > SQL Syntax Reference (8.1.3.x) > DDL Syntax
        • Viewing GaussDB(DWS) Cluster Details - GaussDB(DWS)

          Viewing GaussDB(DWS) Cluster Details - GaussDB(DWS)

          You can also add, delete, or modify security group rules in the current security group. Changing the security group of a cluster may cause brief service disruption. Exercise caution when performing this operation.

          Help > GaussDB(DWS) > User Guide > GaussDB(DWS) Cluster Management
        • gs_dumpall - GaussDB(DWS)

          gs_dumpall - GaussDB(DWS)

          -c, --clean Runs SQL statements to delete databases before rebuilding them. Statements for dumping roles and tablespaces are added. -g, --globals-only Dumps only global objects (roles and tablespaces) but no databases.

          Help > GaussDB(DWS) > Tool Guide > Server Tools
        • Tuning Database Parameters - GaussDB(DWS)

          Tuning Database Parameters - GaussDB(DWS)

          Notes: Simple query jobs (which are estimated to require less than 32 MB memory) and non-DML statements (statements other than INSERT, UPDATE, DELETE, and SELECT) have no adaptive load restrictions.

          Help > GaussDB(DWS) > Standard Data Warehouse (8.1.3.x) > GaussDB(DWS) Performance Tuning > System Optimization
        • Tuning Database Parameters - GaussDB(DWS)

          Tuning Database Parameters - GaussDB(DWS)

          Notes: Simple query jobs (which are estimated to require less than 32 MB memory) and non-DML statements (statements other than INSERT, UPDATE, DELETE, and SELECT) have no adaptive load restrictions.

          Help > GaussDB(DWS) > Standard Data Warehouse (9.1.0.x) > GaussDB(DWS) Performance Tuning > System Optimization
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