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 …

Building Remove(rm) or Delete OS Commands for Oracle Database Files (Caution: Destructive)

Important Warning: Destructive Operation

The provided code snippet demonstrates how to construct operating system (OS) commands for all datafiles, temporary files, log files, and control files within an Oracle Database. However, …

Find Duplicate Filenames in Oracle Database: Code Breakdown and Insights

This post dives into an Oracle Database code snippet that identifies duplicate filenames across your entire database. We'll break down the code, explain its purpose, and provide valuable insights for optimizing your database management.

Find …

Find Duplicate Filenames in Oracle Database: Code Breakdown and Insights

This post dives into an Oracle Database code snippet that identifies duplicate filenames across your entire database. We'll break down the code, explain its purpose, and provide valuable insights for optimizing your database management.

Find …

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

1col …

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 …

SQL 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 …

Query to Display All Tablespaces Used by A Specified User and The Total Space Occupied (rounded to MB)

Sample SQL Command

1select  tablespace_name
2,       ceil(sum(bytes) / 1024 / 1024) "MB"
3from    dba_extents
4where   owner like '&user_id'
5group by tablespace_name
6order by tablespace_name
7/ …