Show a Count of Analyzed Tables Broken Down by Schema in Oracle Database Purpose: This post explains how to use Oracle SQL to report the total number of tables and the number of analyzed tables for each schema in your Oracle Database. This is crucial for database administrators who want to monitor the health and …

Oracle Database: Deleting Statistics with DBMS_STATS Package The Oracle Database DBMS_STATS package provides powerful procedures for managing database statistics. This post explores the delete_stats procedures, which are crucial for maintaining accurate query optimization. Understanding DBMS_STATS.DELETE_STATS …

Optimizing Oracle Database Performance with GATHER_SYSTEM_STATS Oracle Database's DBMS_STATS package is a powerful tool for gathering and managing database statistics. This post focuses on the GATHER_SYSTEM_STATS procedure, which is crucial for optimizing query performance by collecting system-level statistics. …

Oracle Database: Understanding Lock Conflicts with dba_lock and Column Formatting Purpose This Oracle SQL query is designed to investigate and understand lock conflicts within your database, particularly those causing performance bottlenecks. It leverages the dba_lock view to expose critical lock information in a …

Identifying Locked Rows in Oracle Database using tables v$session and dba_objects Purpose This Oracle query pinpoints the exact row a specific session is waiting on due to a lock. It first finds the locked object and row location, then constructs a ROWID to fetch and display the entire locked row from the table. Sample …

Identify Locked Objects in Oracle Database using v$locked_object, dba_objects, v$lock and v$session Purpose The provided Oracle Database code is a SQL query designed to identify locked objects within a database. It provides detailed information about the locked objects, including the username, session ID, object name, …

Enabling Disabled Foreign Key Constraints in Oracle Database using dba_constraints Purpose This SQL query generates a list of SQL statements that can be executed to enable all disabled foreign key constraints in an Oracle database. Sample SQL Command 1set lines 100 pages 999 2select 'alter table …

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 …

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, …

Creating a Temporary Tablespace in Oracle Database This guide explains an Oracle Database SQL code snippet for creating a temporary tablespace named temp, its purpose, key points, and insights. Sample SQL Command 1create temporary tablespace temp 2tempfile '<file_name>' size 500M 3/ Create a Temporary Tablespace named …