Oracle 11204 Clusterware upgrade – ASM glitch

Yet another tough challenge thrown at my team right after the disaster recovery (DR) simulation drill which performed barely couple of weeks ago. The new task (challenge) in hands is to upgrade the existing four cluster environments from 11.2.0.2 to 11.2.0.4 as Oracle already stopped supporting v11.2.0.2.

Although last week we had a 3 node successfully upgrade track record, we encountered ASM upgrade troubles whilst running (more...)

Disaster Recovery Simulation test – performed 30 databases failover

Successfully switched (fail-over) the role of over 30 physical standby databases  this morning as part of the Disaster Recovery (DR) simulation test. Fortunately, there were no technical glitches and hassles during the course of testing as  anticipated. It was indeed a great test and very successful one too.

The next  big challenge to the team would be reconstructing and making in sync those 30 physical standby databases whose range from 100GB to 5TB size.

Anyways, (more...)

EID Holidays and things to do

Looking forward to a much anticipated 9 day EID holiday break to complete the to-do-list which I have been carrying for a while now. Determined to complete some of the writing assignments that I have kept pending for a long period of time now. At the same time, will have to seek the possibilities to exploring the new features of v12.1.0.2 and Exadata as we might we going for the combination in (more...)

Monthly article publication on Toad World portal

Let me quickly give you an update if you are wondering why I kept clam, not making much buzz on my blog. Well, over the past one year or so, I have been contributing monthly articles to Toad World news letter, and all my articles are published at their portal. I must encourage you all to visit Toad World website where many Oracle Experts/Gurus contributing/sharing knowledge.

Middle East & North Africa (MENA) 2014 OTN Tour – Tunis/Riyadh/Jeddah/Dubai

First ever MENA OTN Tour is scheduled From 26-May to 1-June 2014 in Tunis/Saudi Arabia/Dubai major cities.

2 Continents, 3 Countries, 5 Cities:50+ Action-Packed Oracle Sessions.
Courtesy of the Oracle Technology Network (OTN) and the ARABOUG, the inaugural 2014 OTN MENA Tour brings a star-studded cast, consisting of some of the world's best Oracle (more...)

Middle East North Africa (MENA) OTN Tour – May 26 – June 1

Middle East North Africa (MENA) OTN Tour, scheduled through May 26 until June 1 in Tunisia, Saudi Arabia and Dubai countries.

More updates about agenda, registration will be published very shortly. Stay tuned.

Oracle 11g upgrade and SYS.AUD$ obstacles

During one of the Oracle 10gR2 databases manual upgrade to Oracle 11gR2 couple of days ago, to our own surprise, the upgrade procedure took nearly 5.34 hrs to finish. Although we had done earlier 100's of database manual upgrades comfortably within 2 hrs time window for individual database, the delay indeed surprised us this time. Unfortunately, there is no log that could help us understanding what is really going on. We started investigation the (more...)

Bug 18223021 : DISK FILE OPERATIONS I/O ON HP-UX.

We have been dealing with a strange ASM  behavior over the past few months across all ASM instances in our multiple Oracle 11gR2 (11.2.0.2) Cluster envs on HPUX 11.31 OS. Even a simple and typical ASM task like, adding new disk to ASM disk group, disk group mount/unmount and querying for CANDIDATE asm disks was taking min of 20 minutes, and sometimes infinity time. This behavior caused a lot of performance (more...)

CRS-1615:No I/O has completed after 50% of the maximum interval

A few days back on one of the production cluster nodes the clusterware became unhealthy and caused instances termination on the node. If it was a node eviction, everything would have come back automatically after the node reboot, however, in this scenario, just cluster components were in unhealthy state, hence, no instance started on the node.

Upon referring the ocssd.log file, the following error found:

cssd(21532)]CRS-1615:No I/O has completed after 50% of the maximum (more...)

AUTO Vs Manual PSU patch – when and why?

The purpose of this blog entry is to share a successful story of reducing (almost 50%) over all patching time we achieved in the recent times. Thought this would help you as well.

In my own perspective, I think we are one of the organizations in the Middle East who has a large and complex Oracle Cluster setups in-place. Having six (06) cluster environments, which includes production, non-production and DR, it is always certainly going (more...)

Upgrade to Oracle 12c [1Z0-060 ] exam is available now

A very quick note about the announcement of Upgrade to Oracle 12c - 1Z0-060 exam availability, it is no longer beta now. The exam has two sections, with 51 and 34 question respectively in each section with 64% and 65% passing margin. You must succeed in both sections in order (more...)

Exadata – a new learning cuvrve

Perhaps I might be touch late on adopting/exploring/reacting/coping up with the exadata, but, it was always my dream and passion to work with the technologies since the announcement. As we knew Exadata is not something we can download and configure that easily on PC like those of traditional database or (more...)

I am speaking @AIOUG – SANGAM13 conference

This post is specifically aimed to the folks back in India, mostly in Hyderabad or surrounding places.

Perhaps most of you probably knew that the All India Oracle Users Group (AIOUG) annual conference SANGAM13 will be taking place in Hyderabad this year. I have been trying my luck over the (more...)

Oracle Open World 2013 – attending & presenting

Most of us knew Oracle Open World 2013 event is fast approaching and kicks off in just a few days time. I haven't talked much about the OOW13 event of late, therefore, I am sharing my plans over here.

  • attending Oracle ACE Directors briefing scheduled on 19-20 Sept 2013 at (more...)

Deprecated database init. parameters in 12c

Here is a very short blog about all the deprecated database initialization parameters in 12c.  It is sometime becomes essential to be familiar with those database features and init. parameters that are either de-supported or deprecated in a new release of Oracle database before proceeding with the upgrade. This (more...)

Useful MOS notes on 12c

Here is the list of useful MOS notes on 12c:


  1. Oracle Database 12c Release 1 (12.1) Upgrade New Features [ID 1515747.1]
  2. NOTE:1520299.1 - Master Note For Oracle Database 12c Release 1 (12.1) Database/Client Installation/Upgrade/Migration Standalone Environment (Non-RAC)
  3. NOTE:1493645.1 - Oracle Database 12c Release 1 (more...)

Oracle Database 12c Technology Day worldwide

Oracle quotes that 12c comes with more than 500 new features. Join the Oracle technology day event to learn firsthand how the new multitenant architecture make it easy to deploy and manage database clouds.

You will learn the following:


    • Simplify database consolidation
    • Automatically compress and tier data
    • Improve application continuity
    • (more...)

    Upgrade, Migrate and Consolidate to Oracle Database 12c slide deck by Mike Dietrich

    Mike and his team did it once again. This time its 12c Upgrade/Migrate.

    Here is the excerpt from his blog:

    with (sorry, we've did it again!) over 500 slides covering:
    • The brand new Parallel Upgrade including new Pre/Post-Upgrade-Fix-Ups
    • The new Full Transportable Export/Import Feature
    • Obviously Oracle Multitenant, (more...)

    Oracle Database 12c – download on https://edelivery.oracle.com/

    Although Oracle yet to announce the release of Oracle Database 12c publicly, if you have got MOS login credentials, download Oracle Database 12c for Linux on E-Delivery site.

    https://edelivery.oracle.com

    However, the documentation is not open yet.

    Enjoy and good luck with all your testing!!!!!!!!!

    ORA-01115: IO error reading block from file (block # ) – a list of common causes

    There are situations when a single issue could arise for different reasons. Will list out some of the common causes of an 'ORA-01115: IO error reading block from file  (block # )' error over here.

    Typically, when Oracle failed to read a data block from an open data (more...)