AskDba.org Weblog

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

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

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]

Posts Tagged ‘aix’

Performance Management Guide on AIX

14 Feb, 2011 | Author: Saurabh Sood | No Comments »

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, [Read More]

Sqlplus connection on AIX taking too long

23 Sep, 2009 | Author: Amit | 2 Comments »

Recently we faced a performance issue, where in sqlplus connection from application server A (AIX 5.3) to Database server DB (different physical server,10gR2 on AIX 5.3) was taking nearly 1-2 minutes. We did some quick check’s to narrow down the problematic area.i.e [Read More]