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Flashback : Guaranteed Restore Point
Oracle Flashback database and restore points enables us to rewind the database back in time to correct any problems caused by logical data corruption or user errors and it doesn’t require any...
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Identifying Bloated Index in Oracle
Indexes have always been a topic of interest for DBA/Developers. When it comes to index rebuild there have been many opinions floating across internet on when to rebuild these indexes. Many do say when...
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2013 in review
The WordPress.com stats helper monkeys prepared a 2013 annual report for this blog. Here’s an excerpt: The Louvre Museum has 8.5 million visitors per year. This blog was viewed about 140,000 times in...
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Few Scripts for Identify Performance Issues using DBA_HIST view
It has been pretty long that i had blogged.Past year was little busy on both personal and professional front. But this year i am planning to be more active in sharing and learning and with not only...
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Plan change using load_plans_from_cursor_cache
This post is more of a note for myself and might be helpful to few other. Assuming db is 11gR2 and baselines/spm is used. When a new query is introduced in db, it might be that it runs with the good...
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ORA-26723: user “XXXXX” requires the role “DV_GOLDENGATE_REDO_ACCESS”
While starting the extract on UAT DB env which had been recently moved to exadata we got the below error.As we had redo and archive logfiles on ASM, we used “TRANLOGOPTIONS DBLOGREADER” in extract...
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UPGRADE CHECKPOINTTABLE – Goldengate
We have a goldengate setup wherein 3 different GoldenGate clients connects and replicat to one target database.Below are the versions being currently used 11.1.1.1, 11.2.1.0.0 and 11.2.1.0.3. The...
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Internals of Active Dataguard – A must read
I found the below blog interesting and feel its a must read to enchance knowledge on Active DataGuard http://sai-oracle.blogspot.in/2012/11/internals-of-active-dataguard.html Happy reading :)Filed...
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DBCA failing with “Diskgroup XXX is not compatible for database usage”
Today a friend of mine pinged me an error while he was trying to create database using DBCA from 11.2.0.3 RDBMS home on an exadata box.Screenshot of the error is below The error was easy to understand...
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2012 in review
The WordPress.com stats helper monkeys prepared a 2012 annual report for this blog. Here’s an excerpt: 19,000 people fit into the new Barclays Center to see Jay-Z perform. This blog was viewed about...
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Lets welcome 2013
Wishing everyone a very happy and prosperous New Year 2013.In this New Year, may you always be blessed with contentment, peace and abundance. With 12c releasing in 2013, it would be a happening Year...
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ORA-38500: Unsupported operation: Oracle XML DB not present
While trying to import using impdp got the below error Table "ANAND"."TEST" exists and has been truncated. Data will be loaded but all dependent metadata will be skipped due to table_exists_action of...
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ASM Diskgroup shows USABLE_FILE_MB value in Negative
Today while working on ASM diskgroup i noticed Negative value for USABLE_FILE_MB. I was little surprised as it has been pretty long that i worked on ASM. So i started looking around for blogs and mos...
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SYSAUX Growing rapidly!!! What can be done
Recently i have been working on cleaning up SYSAUX tablespace for few of clients, so thought to put down my steps which might be helpful to some of you out there. Why does SYSAUX tablespace grows much...
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Purging SYSAUX
In continuation to my previous post “SYSAUX Growing Rapidly” , here i wanted to present the second method of purging sysaux. Basically i tried to perform the steps as mentioned in previous post and...
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Sangam 2014
I am back from AIOUG meet “SANGAM 14 – Meeting of Minds” and it was a wonderful experience. Had really nice time meeting some old friends and making few new ones :). I think i should mention here,...
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ORA-00600 – [kfnsInstanceReg00]
An interesting case of ORA-600 :) I was paged for standby lag and started looking into the issue. The db version was 11.1.0.7.0 version. Standby was lagging behind by 36 archives SQL> @mrp INST_ID...
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Upgrading to 11.2.0.4 – Dictionary View Performing Poor
Just a quick blog post on things you might see after upgrading to 11.2.0.4. We recently upgraded database from 11.2.0.3 to 11.2.0.4 and query on some data dictionary views ran too slow. 1. Performace...
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ORA-00600: [ktbdchk1: bad dscn]
Last week I had performed switchover activity of database on version 11.2.0.3 The switchover was performed using dgmgrl “swicthover to standby” command. After sometime we started receiving “ORA-00600:...
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Primary on FileSystem and Standby on ASM
For one of the client, standby server went down. We had another standby server which was kept down for more than a month. Decision was taken to start the server and apply incremental SCN based backup...
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