ORA-00060: Deadlock Detected While Waiting for Resource – How to Identify and Fix It Like a Pro
You’re in the middle of a busy day, users start calling — “our app froze”, “transactions failed”, or “we’re seeing ...
Tag: Oracle Database
How to Fix Broken Data Guard Log Shipping (Step-by-Step Oracle DBA Guide)
It’s 2 AM, and your monitoring system sends an alert: “Archive log gap detected between primary and standby database.” You ...
ORA-04031: Unable to Allocate Shared Memory – Causes, Fixes, and Prevention (Oracle DBA Guide)
ORA-04031: Unable to Allocate Shared Memory is one of those Oracle errors that can strike unexpectedly in production, often during ...
How to Set Up a Dedicated Listener for PDBs in Oracle Multitenant Database
Dedicated Listener for PDBs plays a vital role in optimizing connection management within an Oracle Multitenant Database environment. By configuring ...
Fixing OPatch Error: “CheckActiveFilesAndExecutables Failed” – Identify and Kill Active Oracle Processes
One of the most common issues Oracle DBAs face during patching is the “CheckActiveFilesAndExecutables failed” error. This error occurs when ...
How to Fix: UtilSession Failed — Prerequisite Check “CheckMinimumOPatchVersion” Failed
When applying an Oracle patch using OPatch, it’s not uncommon to encounter the error message: UtilSession failed: Prerequisite check "CheckMinimumOPatchVersion" ...
How to Drop and Recreate Temp Tablespace in Oracle (Step-by-Step Guide)
Drop and Recreate Temp Tablespace in Oracle is a crucial maintenance task for every DBA who wants to keep their ...
Oracle Tablespace Usage Query: Monitor Total, Free & % Used
Keeping an eye on tablespace growth prevents surprise outages and ORA-01653/ORA-01654: unable to extend segment. The query below surfaces total ...
Create Oracle Data Guard Broker Configuration: Step-by-Step Guide for DBAs
If you're looking to create Oracle Data Guard Broker Configuration, this step-by-step guide will walk you through everything you need—from ...
