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UKOUG 2010 – Day 2
Tuesday and as I start to do this write-up at lunchtime I have the feeling that today will not be as good as yesterday, at least not in my eyes. The day started with a talk on system statistics but it...
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UKOUG 2010 – Day 3
First up on Wednesday morning was Joel Goodman with a pretty comprehensive coverage of Grid Infrastructure. He overran by about ten minutes and you got the feeling that he could have carried on for...
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Archived logs stuck ‘in-memory’ when building a standby
We had to build a new copy of a physical standby database (11.1.0.7) and the RMAN duplicate command had completed successfully so all we needed to do was to let the archived logs catchup. After an...
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How many mistakes can you make when diagnosing a problem
Last week I attended a talk by Daniel Fink at UKOUG around having a plan to sort out problems and perhaps the key point was –‘listen to the problem before setting off down the investigatory path’. I...
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How to create a User Defined metric(UDM) in Grid
Using Grid it is possible to create user defined metrics that capture information about the state of a database, a host or an application. Once you have a script or sql statement that returns a value...
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Oracle changes core processor licensing factor for HP Itanium
This blog is probably only of interest to those shops that use HP Itanium chips but from this month Oracle have changed the Core Processor Licensing Factor for Intel Itanium Series 93XX from 0.5 to...
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Oracle Database 11g: Interactive Quick Reference
I posted a note on the Oracle-L mailing list last week covering the Oracle Database 11g: Interactive Quick Reference which has been released by Oracle. The comments that came back were not...
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Overview of OEM management packs
Porus Homi Havewala who produced two of the top ten most downloaded articles on OTN in 2009 has produced an overview of OEM Management Packs Mostly centred on the Diagnostic and Tuning Packs, which you...
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2010 in review
The stats helper monkeys at WordPress.com mulled over how this blog did in 2010, and here’s a high level summary of its overall blog health: The Blog-Health-o-Meter™ reads Wow. Crunchy numbers A helper...
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Changing redo log size – standby database
It is very easy to forget to resize the redo logs on standby after increasing the size on primary. These notes provide all the commands you need to quickly and easily resize the logs on standby Resize...
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Incorrectly sized standby redo logs
When we have a situation where the standby redo logs on the standby database are not the same size as the online redo logs on the primary database, there is a strange redo log switching behaviour on...
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Scripts to resize standby redolog files
I have already posted about an issue that required me to drop and recreate standby log files so I thought I would post the scripts I used. Resize Standby Redo Logs 1. On primary defer log shipping...
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When partitions in a table have been explicitly locked, “lock_table_stats”...
Problem Statement: rdbms version 11.1.0.7 – HPUX When partitions in a table have been explicitly locked, “lock_table_stats” and “unlock table_stats” do not override this behaviour. Question To...
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ORA-00959: tablespace ‘_$deleted$5$0′ does not exist
Firstly the background. I had a very large tablespace (3Tb with only about 20% used) so I re-organised all the objects, which all belonged to one schema for which this was the default tablespace,...
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Using OEM reports to show PSU levels across the estate
The reporting capabilities of OEM are very good, although sometimes it is hard to find which views the data you want is held in. This post is about sharing how to build a report which details how many...
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UKOUG Conference 2011 – Call for papers
The UKOUG Conference to be held in Birmingham (5th – 7th December 2011 ) is looking for presentations on: real life business experiences; in depth product analysis, new product overviews and everything...
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What is the overhead of using reserved words?
I wish I knew is the short answer. We are using a 3rd party tool which was ported from elsewhere to run on Oracle (probably SQLServer). Consequently there are a lot of column names that are Oracle...
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Enterprise manager – How To Install An Additional Management Service
How To Install An Additional Management Service This document will describe how to install an additional management service for Oracle Enterprise Manager Grid Control 10.2.0.5 on HP-UX. It was written...
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Grid control sends false alerts with “Agent to OMS communication broken” message
We have been seeing an increasing number of alerts stating that OEM cannot ping an agent. These then generate alerts and incidents and potential callouts. The situation was getting increasingly worse...
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Optimizer statistics do not get automatically purged
You run a manual ADDM report for the most recent snapshot and it never finishes. You notice that in the performance tab (historical data view) for the same database there are no ticks in the box that...
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