Oracle DBA Daily/Weekly/Monthly or Quarterly Checklist/Tasks
This is the most common question for beginners or all of us. Database is living system, every second it has doing something. As a dba we need to check some informations to keep our db up and work 7×24...
View ArticleLatest info for Oracle Database version supports&end life
I wanted to share latest update&details for current database support&end of life.Short information can be found below. For more details you can check this link The bug fixing has been ended...
View ArticleUNIX Basics for the DBA
We are not Unix admin but we have to know some basic commands as a dba. In this post i try to share some of most usefully command for Unix based system. Here is the some usage and examples The...
View ArticleSelect Fails With ORA-600 [kdsgrp1] on 11gR2
I faced with that error on one of our 11.2.0.4 database. We got ora-600 error on our alert.log. After investigate issue we have found our error is matches unpublished Bug 5368945 – ORA-00600:...
View ArticleUseful RMAN Lists Commands
RMAN List backup is a useful command to list the backup taken in the system. It shows all the details about the backup taken, what time it was taken, location of the backup. Let us see our commands:...
View ArticleStep by Step Rename or Move Datafiles
In some case, you would need to move or rename your datafiles which is belong to your tablespaces in your database. I try to explain step by step how you can move your data files on your system. Let...
View ArticleStep By Step Resize Redolog Files in Oracle
As you know Redo files are one of the most important file for Oracle databases. It have to be mirror and also have big enough for performance and contunity. In Oracle formal documentation, redo switch...
View ArticleORA-65093- How to Fix?
This issue often occurs at Oracle database 12c installation process. But I faced with that error message during restore/recovery operation… This error occurs whenever we want to mount the database but...
View ArticleHow To Mount Cd-rom in OEL Linux
These days, CDs and DVDs are not popular. However, you still may need to use CD drive to able to insert a disc and mount it on Linux for your needs. In this post we will do it step by steps. Here are...
View ArticleHow To Move All Schema Objects to a Different Tablespace
You may need to move some objects to another tablespace or you may need to move all objects to one new tablespace under schema I will share some sql statement to achieve this purpose. Here is the...
View ArticleMove All table&index etc. to another tablespace by using script
You can find related script by below Enjoy!! Move_objectsDownload
View ArticleHow to enable or disable EM express 12c
You may need to enable or disable EM express on 12c. Do not forget you still can use cent browser for java related screens Here is the steps and controls Check related info by using below sqls: If the...
View ArticleHow to Disable Oracle Diagnostic Pack&Tuning Pack in Oracle Database
As you know both option must be use by Oracle licenses. Before we start we need to clarify some information. Oracle Standard Edition or Standard Edition xx; there are no management packs. These can be...
View ArticleHow to clean up older records in AUD$ table
Auditing is the monitoring and collection of some user database actions and record these data in some tables. Auditing is always enabled. Oracle Database generates audit records during or after the...
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Oracle 23c? What happened 20c&22c
As you know Oracle has been chaned release name. In this post we talk about Oracle Realeases. Before we start let use see current Oracle Database Realeases and Support Timelines Let us start Oracle...
View ArticleRedo Transport Services fails with ORA-16198
I got this error message on 19c dataguard production database at alertlog. The primary alert log file showed: LGWR: Attempting destination LOG_ARCHIVE_DEST_2 network reconnect (16198)LGWR: Destination...
View ArticleHow to export&import process on container database
In this post we will see how we can use export-import utility when container database involved. In our test case we have PROD and TEST server. Both database version is 19c, operating system is OEL 7.9...
View ArticleOPW-00029 Password complexity failed in Oracle 18c
I got this error while I was triying to create a password file on Oracle 18c database, it initially failed by below error: OPW-00029: Password complexity failed for SYS user : Password must contain at...
View ArticleHow To Use 10046 Trace for Performance issue
As a DBA we face a performance issue on our database. Mostly we hit query performance issues. We need to clarify to know about more details about query. Oracle provides to generate trace files which...
View ArticleHow do I change the listener port on Oracle?
You may need to change your database listener port. In this post we will do it together by following below steps Log in to the Linux operating system as the oracle user.Check the current listening...
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