A tricky standby database situation

A very tricky and interesting situation came-up this morning while configuring one of the standby databases of over 1.5TB sized . Whilst the database is being cloned to the DR site as part of the DUPLICATE..ACTIVE DATABASE command, which actually took more than 1.5 day, a couple of (more...)

New Page – Data Guard

A quick update about the new page. I have created a new page (tab) 'Data Guard' on my blog to share/discuss all data guard related issues that we confronted during our extensive DR setup and testing. The objective is to record all the errors/issues of data guard setup and how (more...)

Its data guard time for the team yet again

Just a very quick update about my upcoming tasks and what I will be doing for the next 3 weeks time. It is indeed going to be a super busy rest of the month for the entire team as over 41 RAC databases data guard configuration need to be done. (more...)

Things to be considerd before/after the OS patch deployment

The objective of this summary is to emphasize the importance of considering things like verifying the patch compatibility and  relinking the home after the underlying Operating System (OS) patch deployment in any Oracle environment. I would like to share an incident (a little story) that we encountered a few days (more...)

Managing & Troubleshooting Cluster – 360 degrees — upcoming webinar

My upcoming webinar 'Managing & Troubleshooting Cluster - 360 degrees' sponsored/arranged by RedGate is scheduled on 25th April 2013. The following topic will be covered during the course of the presentation: What's new in 11gR2 Clusterware – Key new features at a glance Oracle 11gR2 Clusterware software stack Clusterware start (more...)

Possible data corruption,ORA-600 on RAC instance shutdown

I am afraid, it is not a so good news for those who manage 11.2.0.1|2 RAC databases. On a very unfortunate day, an RAC database db | instance shutdown normal|transactional|immediate mode could result in an ORA-600 errors or may cause logical corruption to the redo stream . According to the MOS ID [1318986.1] , when a RAC instance(s) (11.2.0.1|2) shutdown either in normal|transactional|immediate

Database downgrade – MOS useful notes

Are you planning a database upgrade keeping a back-out (downgrade) plan in mid? Here are a few very important MOS docs explains all about: How To Downgrade From Database 11.2 To Previous Release (includes 11.2.0.3-11.2.0.1) [ID 883335.1] Database Server Upgrade/Downgrade Compatibility Matrix [ID 551141.1] Master Note For Oracle Database Downgrade [ID 1151427.1] Downgrading Database Without

Welcome to the IOUG Cloud Computing Special Interest Group (SIG)

The IOUG Cloud Computing Special Interest Group (SIG) is dedicated to communication and information interchange around the subject matter of Cloud Computing centric to Oracle.  The main purpose of the SIG is to discuss and share independent thought, challenges, options, and best practices on key areas of Cloud Computing from the perspective of Oracle. Topics will be discussed freely in this