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]

Author Archive

ORA-01426 After Upgrade to 10g

Oracle seems to have a tendency to make small changes to database code which impacts application in a big way. Sad part is, these changes are not always documented properly. One of these cases is what I encountered. A simple PL/SQL code errors out as below: Oracle Database [Read More]

ORA-00600 [12333]

ORA-00600 with is an error that I have encountered on multiple occasions. This post is to shed some light on what this error is all about. To start with let us try to understand when does oracle report ora-00600 error. An ora-00600 error is raised in the exception handler [Read More]

CPU (Critical Patch Update) and N-apply

OVERVIEW Oracle has been regularly releasing security fixes for all it’s products to take care of any security vulnerability. Since 2005 Oracle formulated a policy that it will release CPU patch ( bundle of security fixes) every quarter (January, April, July, and [Read More]

Understanding of Oracle 11g Automatic Diagnostic Repository – Part 1

Understanding of Oracle 11g Automatic Diagnostic Repository – Part 1

INTRODUCTION In an endeavour to move towards self managed database and provide better support solutions, Oracle 11g introduces another new feature in 11g called the Automatic Diagnostic Repository or ADR. As the name implies ADR is a automatically managed file based [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