Original Post can be viewed at Get Upgrading: Upgrade to Enterprise Manager Cloud Control 12c

This post describes the steps to upgrade an existing 11g Enterprise Manager Grid Control (11.1.0.1.0) to 12c (12.1.0.1.0). The Complete Upgrade process will be carried out under 3 different stages: 1. Patch existing 11g OMS to get the 12c upgrade console. 2. Deploy and Configure 12c agents. 3. Upgrade 11g OMS to 12c. The approach used [...]

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Original Post can be viewed at Optimizer Choosing Nested-Loop Joins Instead of Hash-Joins

In one of my databases, one application query suddenly started to pick Nested-Loop joins instead of Hash-Joins and took almost 6 hours to complete which gets completed in less than 10 secs with Hash-Joins. The same query in another similar database with same configuration and same data is doing fine and using hash joins. There is [...]

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Original Post can be viewed at Oracle Database Appliance Introduced

Oracle has introduced it new product: ODA (Oracle Database Appliance) I was not able to join Oracle President Mark Hurd’s webcast where he supposed to announce a new Oracle product[It was at 1AM my time and I was sleeping], now viewing this webcast HERE Kerry Osborne has shared information about this product, click link to [...]

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Original Post can be viewed at In-Place Upgrade 11gR2 RAC : 11.2.0.1 To 11.2.0.2

Sharing a post from my friend “Carthik” on 11gR2 RAC in-place upgrade. Overview ======== Starting oracle 11gR2 the Oracle database and Clusterware upgrades are done via the “Out of place upgrade”. And is the easier way to perform your upgrade.  However, the intent of this blog is to explain how an “In-Place upgrade” of a [...]

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Original Post can be viewed at BUG:10082277: Database Connections failing with ORA-4031

A short write-up on a problem faced in few newly upgraded databases to 11.2.0.1 : I faced this issue in couple of databases which were recently upgraded to 11gR2, the problem is so severe that even connecting using “/ as sysdba”  is not working and erroring out with <span style="font-family: arial,helvetica,sans-serif; font-size: small;">ORA-04031: unable to [...]

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Original Post can be viewed at BUG: Creating 11gR2 RAC Using VMware On Toshiba Laptop

I was setting up 11gR2 RAC grid infra on my new Toshiba L745 series laptop on OEL5.4, the installation was going very smoothly but suddenly the VMWare machines crashed while performing remote operations on second node with following message: <span style="font-family: arial,helvetica,sans-serif;">"vmxaiomgr.retrycontabort" Please disconnect and reconnect if the storage is external to comupter</span> The next [...]

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Original Post can be viewed at Performance Management Guide on AIX

While trying to find the amount of physical memory used by oracle process on AIX, I got reference of a document from Metalink: Performance Management Guide It tell us about which process is using how much memory and how to interpret the output of commands like: vmstat, svmon, ps on AIX. Also, to get more [...]

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Original Post can be viewed at ORA-01722 with Full Table Scan

My application developers approached me with an issue which is very unique to me. They were complaining about a query which was failing with ORA-01722 “invalid number” after an upgrade to 11.1.0.7 from 10.2.0.4. The syntax of the query is like: select max(a) from t1 where c1<>'abc' and c2=12345 and c3='Y' and c4='xyz'; This query [...]

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Original Post can be viewed at Effect Of Multiple SHMMAX Settings

Last week I saw a warning message at database startup time saying: WARNING: EINVAL creating segment of size 0x000000000f0020xx fix shm parameters in /etc/system or equivalent It is an Oracle 10204 database running on Solaris. Searching MOS for exact meaning for this warning, it states that a new shared memory segment is getting created to [...]

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Original Post can be viewed at 11gR2: CVU needs SCAN Listeners’ Manual Startup During Grid-Infrastructure Configuration

During configuration phase of Grid Infrastructure for cluster, CVU failed while performing post-checks. Following message is displaced in the Installation Log file: <span style="font-size: small;"><span style="font-family: arial,helvetica,sans-serif;">Checking Single Client Access Name (SCAN)...</span></span> <span style="font-size: small;"><span style="font-family: arial,helvetica,sans-serif;">WARNING: <strong>PRVF-5056</strong> : Scan Listener "LISTENER" not running</span></span> <span style="font-size: small;"><span style="font-family: arial,helvetica,sans-serif;">Checking name resolution setup for "scan-test.abc.com"...</span></span> <span [...]

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Original Post can be viewed at How To Discover Disk Name When LUN Number is Known (OEL5)

I am creating 11gR2 RAC setup for one of my client. Following Oracle documentation for storage, I opted for Oracle ASM and asked storage team for new physical devices. Storage admin thus provided me with a set of LUNs instead of actual physical device names like /dev/sdcxxx. Now the major task is to get the [...]

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Original Post can be viewed at Life Is Changed Now!!!!!

Hi All, This time I am sharing an experience from my personal life, I got Married on 2nd Dec 2009 I was on holidays since last month and just joined back. In this time I visited beautiful Island of Koh-Samui (Thailand). At this time finding hard to concentrate on work Cheers!!! Saurabh Sood Related PostsWishing [...]

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Original Post can be viewed at Get Upgrading: Steps To Upgrade To 11gR2

As 11gR2 is out for Linux, I decided to upgrade one of my existing 10.2.0.3 database to 11.2.0.1 to get the look and feel of 11gR2. Direct upgrade to 11gR2 is supported from 9.2.0.8 or higher, 10.1.0.5 or higher, 10.2.0.2 or higher and 11.1.0.6 or higher. If you have a database 9.2.0.6 then first you [...]

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Original Post can be viewed at OCFS2 Configuration Issue

While setting up ocfs2 for OCR and Voting disk storage with following commad: # ocfs2console After clicking on ==>cluster ==> configure nodes, I got a pop-up saying: <span style="font-size: small;"><span style="font-family: arial,helvetica,sans-serif;">"Could not start cluster stack. This must be resolved before any OCFS2 filesystem can be mounted."</span></span> Soon I realized that the thing which takes [...]

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Original Post can be viewed at CleanUp Temporary Segments Occupying Permanent Tablespace

There are situations when we see “temporary segments” in permanent tablespaces hanging around and not getting cleaned up. These temporary segments in permanent tablespace can be created by DDL operations like CTAS and “alter index..rebuild” because the new object is created as a temporary segment in the target tablespace and when the DDL action finishes [...]

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Original Post can be viewed at Generating Datapump Export Dump with Dumpfile name Containing Current Date and Time

Few days back I got a request from development team to generate hourly export dumps of few schemas. Following were the requirements: 1. Dumpfile name should contain current date and timestamp information. 2. The generated dumpfile should be moved to a specific location. 3. All users should have read privileges on the export dumpfile. 4. [...]

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Original Post can be viewed at SRVCTL fails to start RAC resources:CRS-0215

After upgrading RAC database to 10204 and applying CRS bundle patch-1 for 10204 crs home, srvctl command fails to startup resources on rac nodes. While starting up RAC resources using SRVCTL following error occurs in CRSD.log file: $ srvctl start instance -d rac -i rac2 2009-04-09 13:45:22.091: [ CRSRES][2611477408][ALERT]0`ora...inst` on member `` has experienced an [...]

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Original Post can be viewed at Grid Control Fails to Start

The link for Grid Control was not Working and it failed to show the login page. In this situation  checked the following things: 1. The repository database was up and running 2. The listener was up. 3. OMS server was down. Tried to stratup the OMS server using opmnctl startall command, but it showed following [...]

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Original Post can be viewed at Connections to DataBase Hang Including “/ as sysdba”

Recently I faced one issue where all the connection to database hung and it was also not possible to login to database using “/ as sysdba”. To get access of sqlplus I used the following syntax: $ sqlplus -prelim / as sysdba With “prelim” option we can run some commands which will help in collection [...]

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Original Post can be viewed at Creating Oracle Extended RAC on Oracle VM

Yesterday, I found one very useful article at OTN “Creating Oracle Extended RAC” on completely virtual environment using Oracle VM. As Virtualization is becoming popular day by day and is very cost effective, one must know how to use this to simulate actual environments. Click  here for details on Oracle Extended RAC on Oracle VM. [...]

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