Oracle Scripts

Oracle CREATE DIRECTORY Command Explained The Oracle CREATE DIRECTORY command creates a directory object — a logical alias inside the Oracle database that points to a real folder on the server's file system. This is one of the most used setup steps for Oracle Data Pump exports and imports, UTL_FILE file operations, …

Oracle Data Pump: Create the DATA_PUMP_DIR Directory Before you can run any Oracle Data Pump export (expdp) or import (impdp) job, Oracle needs to know where to write and read dump files and log files on the server. You do this by creating a directory object inside the database that points to a real folder on the …

Oracle Data Pump Export Schema with expdp Command Guide Oracle Data Pump's expdp utility lets you take a fast, flexible logical backup of any schema in your Oracle database. This post breaks down a simple schema-level export command, explains each parameter, and shows you how to run it safely. What This Command Does …

Oracle expdp Schema Export Using Data Pump Oracle Data Pump's expdp utility lets you export a full database schema — including tables, indexes, constraints, and data — into a portable dump file. This guide breaks down the single-line command that does exactly that for the andy schema. Purpose of This Command The goal …

Oracle DBMS_FLASHBACK Enable At Time: Session Flashback Guide Oracle's DBMS_FLASHBACK.ENABLE_AT_TIME is a powerful procedure that lets you travel back in time within your database session — letting you query data exactly as it existed at a specific past moment, without needing a full database restore. What This Code …

Overview When working with Oracle Database, there are times when you need to look at data from the past — like rewinding a video to see what happened earlier. Oracle gives you a tool called Flashback to do this. But once you are done looking at past data, you must turn Flashback off. The command to do that is: 1EXEC …

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 …

Export an Oracle Database from a Point in Time Using FLASHBACK_TIME The Oracle exp utility supports a FLASHBACK_TIME parameter that lets a database administrator export a full database with all data consistent to a single point in time. This is critical for large, active databases where export duration may span minutes …

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 …

Oracle Fast Recovery Area: Set DB Recovery File Dest and Size The Oracle Fast Recovery Area (FRA) is a disk location where Oracle stores and manages files related to backup and recovery. Two dynamic initialization parameters — db_recovery_file_dest and db_recovery_file_dest_size — control its location and maximum size, …