Writing About Our Experiences With Oracle Databases
Sunday February 5th 2012

Latest Topics

11gR2:Listener Startup Issues

In this blog post I will be discussing listener startup issues faced in 11gR2 RAC. I will be constantly updating this [Read More]

Get Upgrading: Upgrade to Enterprise Manager Cloud Control 12c

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 [Read More]

Cluster SSH tool Utility

Cluster SSH tool Utility

Many times you come across scenario’s when you wish to open multiple ssh windows and execute same commands.e.g [Read More]

11g: Multiple failed login attempt can block New Application connections

In Oracle database 11g, a new feature/enhancement has potential of bringing down the application due to multiple [Read More]

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 [Read More]

Archive for April, 2009

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 [Read More]

ORA-1078 ORA-1565 Errors while starting database with SPFILE on ASM

I was getting following error’s while starting a database using spfile on ASM. Actually this was a cloned RAC environment. SQL> create SPFILE='+ASM_GROUP/PORTALDB/spfileportaldb.ora' from pfile; File created. SQL> shut immediate; ORA-01109: database [Read More]

Grid Control Fails to Start

The link for Grid Control was not Working and it failed to show the login page. In this situationĀ  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 [Read More]

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 [Read More]

Recent Comments

Saurabh Sood had this to say

Hi Pawan, We cannot force the writes to a specific disk. At least I am not aware of any such thing. Oracle will Read the post

Amit had this to say

hi Pawan, ASM_PREFERRED_READ_FAILURE_GROUPS is mainly used for RAC instances and that too stretch clusters i.e when Read the post

PAWAN had this to say

HI, i am newbie.... please guide me! My manager asked me to configure ASM in 11g with single instance Read the post

PAWAN had this to say

HI, i am newbie.... please guide me! My manager asked me to configure ASM in 11g with single instance Read the post

Saurabh Sood had this to say

@Ganesh: The global stats were up-to-date for both the databases, though I did not check the col stats. But the Read the post