Oracle Flashback Query: Copy Historical Data Into a New Table Sometimes you need to go back in time and recover data the way it looked at a specific moment — without restoring the full database. Oracle makes this possible with Flashback Query, using the AS OF TIMESTAMP clause to read historical data directly from the …

How to Find the Current SCN in Oracle Database Using DBMS_FLASHBACK The System Change Number (SCN) is Oracle's internal logical clock. Every DBA needs to know how to read it. This post shows you the simplest SQL query to get the current SCN from any Oracle Database session, and explains exactly why it matters. What Is …

How to Enable Oracle Database Flashback: Shutdown, Mount, and ALTER Commands Oracle Flashback Database is one of the most powerful data protection tools available to a DBA. This guide walks you through the four commands needed to turn on Oracle Flashback — from a clean shutdown to opening the database in flashback …

Oracle RMAN Database Restore and Recovery Guide Purpose This guide provides complete Oracle RMAN (Recovery Manager) scripts for restoring and recovering Oracle databases in different scenarios. These scripts help database administrators perform full database recovery, point-in-time recovery (PITR), and verify …

How to List Oracle Statspack Snapshots with SQL Query This Oracle Database query provides a simple way to view all Statspack snapshots stored in your database. Statspack is Oracle's built-in performance monitoring tool that captures database statistics at regular intervals, helping database administrators analyze …

Monitoring PGA Usage by Username in Oracle Database Effective memory management is critical for Oracle Database administrators (DBAs) when diagnosing performance issues. Oracle uses the Program Global Area (PGA) for managing session memory, including operations like sorting, hashing, and storing session context. …

Oracle Database SGA Breakdown Script for Performance Monitoring Monitoring memory usage in an Oracle Database is one of the most important tasks for a DBA. The System Global Area (SGA) plays a crucial role in the performance of the database, as it stores data and control information used by Oracle processes. In this …

Oracle SQL Hash Lookup Query - Retrieving SQL Text from V$SQLAREA Purpose This Oracle Database query is designed to retrieve the complete SQL statement text from the V$SQLAREA view using a specific hash value. This is particularly useful for database administrators and developers who need to identify and analyze SQL …

Oracle Database: Find Query Hash Value Using V$SQLAREA Finding specific SQL queries in Oracle Database can be challenging when dealing with large systems running thousands of statements. This guide demonstrates how to efficiently locate query hash values using the V$SQLAREA system view by searching for unique text …

Oracle Database Query: Find Tables with Outdated Statistics Purpose This Oracle Database query helps database administrators monitor the progress of table statistics collection by identifying tables that have analyze dates older than the current date. It's particularly useful when running large-scale ANALYZE operations …