Show All Oracle Database Table Constraints This article delves into the world of Oracle Database constraints, empowering you to understand their types, statuses, and modification history. We'll dissect a powerful SQL query that retrieves this crucial information, making you a database management pro. Sample SQL Command …
Read MoreList Tables That Are Using the Specified Table as a Foreign Key Learn how to use an Oracle SQL query to identify tables referencing a specific table with foreign keys, understand database relationships, and ensure data integrity Sample SQL Command 1set lines 100 pages 999 2select a.owner 3, a.table_name 4, …
Read MoreOptimizing Undo Retention in Oracle Databases: A Practical Guide
May 12, 2024 · 2 min read · Database Administration SQL Commands Performance Optimization Data Management undo_retention oracle dba ·Optimizing Undo Retention in Oracle Databases We will explain how to optimize the undo_retention parameter in Oracle databases using the SQL command ALTER SYSTEM SET undo_retention = 500 SCOPE = MEMORY;. Understanding this parameter is crucial for effective transaction management, rollback capabilities, and maintaining …
Read MoreOracle Undo, A Deep Dive into DBA_UNDO_EXTENTS
May 11, 2024 · 3 min read · Oracle Database Database Administration Performance Tuning SQL Troubleshooting ·Oracle Undo: A Deep Dive into DBA_UNDO_EXTENTS Unlock the secrets of Oracle's undo mechanism with this in-depth guide to the DBA_UNDO_EXTENTS view. Learn how to analyze undo tablespace usage, interpret extent statuses (ACTIVE, UNEXPIRED, EXPIRED), and gain valuable insights for proactive database management. Avoid …
Read MoreReal-Time Oracle Rollback Detection, Is Your Database Undoing Changes?
May 10, 2024 · 3 min read · Oracle Database SQL Database Administration Performance Tuning Troubleshooting v$session v$transaction ·Real-Time Oracle Rollback Detection: Is Your Database Undoing Changes? This SQL query monitors real-time rollbacks in Oracle databases. It identifies which sessions are actively undoing changes and tracks their progress by observing the used_ublk value (the number of undo blocks in use). When used_ublk reaches zero, …
Read MoreCreate a Temporary Tablespace named temp. Here's a breakdown: Sample SQL Command 1create temporary tablespace temp 2tempfile '<file_name>' size 500M 3/ Purpose: To establish a dedicated space for storing temporary data used within the current database session. This improves performance and simplifies …
Read MoreHow to Query User Quotas in Oracle Database The code below retrieves and displays information about user quotas on all tablespaces excluding the temporary tablespace (TEMP) on a Oracle database. Sample SQL Command 1col quota format a10 2select username 3, tablespace_name 4, decode(max_bytes, -1, 'unlimited' 5 , …
Read MoreExploring Datafiles within Oracle Tablespaces
Feb 12, 2024 · 2 min read · database administration performance monitoring data management tablespace datafiles dba_data_files ·Description of Oracle Database SQL code for Showing Tablespace Files This code displays information about the datafiles composing a specific tablespace in your Oracle database. Here's a breakdown of its purpose, components, and key points: Show thea data files that comprise a tablespace Sample SQL Command 1set lines …
Read MoreIdentifying Tablespaces Needing More Space in Oracle Database
Feb 6, 2024 · 3 min read · database administration resource optimization performance monitoring data management tablespace datafiles dba_data_files dba_tablespaces ·Description of Oracle Database SQL code for Identifying Tablespaces Needing Space This code helps identify tablespaces requiring additional space to maintain an 80% utilization threshold in your Oracle database. Below is a breakdown of its purpose, components, and key points: Sample SQL Command 1set pages 999 lines 100 …
Read MoreSQL lists all objects within a specific tablespace in an Oracle database A detailed explanation of Oracle Database SQL code used to list objects within a tablespace, including purpose, breakdown, key points, and insights. Sample SQL Command 1set pages 999 2col owner format a15 3col segment_name format a40 4col …
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