"enq: CR - block range reuse ckpt" and the recycle bin
I decided to write this blog entry because we ran into an issue over the weekend. The process that normally runs fine, was running slow.. "like molasses" was the comment from one of the folks. After...
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Anayzing query Cost example
Well, Here is the issue I've been dealing with. The query cost doesn't stay consistent, and I was wondering if a profile would help keep it stable, and if it keeps things better or worse. I'm sure...
View ArticleODI Monitoring scripts
I have included some usefule ODI monitoring scripts (if you want the abridged version of this blog post).I haven't been blogging in a while (it's been crazy), but I wanted to share some information on...
View ArticleBig Data and Privacy
I am writing an editorial (which is unusual for me). This was caused by a conversation I had with my Dad about how the world is changing with big data, and how much retiree's (like him) should know....
View ArticlePerformance and Indexes with oracle
It's been a while since I've written a post, but twice this week, the same issue came up..The story goes like this.. "I have a query that is using indexes not FTS, but it is much slower then expected"....
View ArticleOracle 12c PL/SQL improvements.
Last week I was giving a presentation for the UNYOUG (Upstate NY Oracle users Group) and I talked about the new features in 12c (along with In-Memory database).I thought I would share some thoughts...
View ArticleX4-2 Exadata Announcement
These the differences with the new X4-2 just announced, along with a table comparing the differences. 1) Double the size of flashcache 2) Switch from 3tb drives to 4tb drives (HC) 3) More cpu cores 4)...
View ArticleMonitoring your Exadata health
One of the biggest topics I talk to customers about is the monitoring of your exadata health. The best tool for this is the Exachk (see MOS Doc ID 1070954.1)This document contains the current Exachk...
View ArticlePerformance tuning using Oracle Internal Packages
I had an interesting problem last week with a customer who was performance testing on a new system compared to their current system.The script was pretty simple. It was a PL/SQL package that inserted...
View Article12.1.0.2 New Features PDB CONTAINERS Clause
When 12.1.0.2 came out, one of the features I wanted to play was the Cross-container functionality, and I finally had time to play with it.First here is the description of the feature.The CONTAINERS...
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M7 is Here
Yes, I know I am more of a sofware geek, than a hardware geek, but I spent the day listening to all the goodness of the new Sparc M7 chip.. and Wow..This was announced at OOW '15, and you can find a...
View ArticleZDLRA
I wanted to write a post on one of Oracle's newest products (Well not that new).. The ZDLRA.The ZDLRA is often referred to as "Zelda". I know the name ZDLRA does not roll off the tongue well. Zelda...
View ArticleZDLRA and the FRA
ZDLRA and the FRAI often get questions around the FRA (Flash Recovery Area), and how it should be used when moving backups to the ZDLRA.First though, the recommendation is to ALWAYS set your...
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Creating Popup windows on your Apex Page
I have been playing with Apex for an internal application Application Express is a great tool, and Oracle has an internal Apex environment that groups can use for their own internal applications.In...
View ArticleIs corruption always true corruption ?
Well the short answer is that there are different types of corruption. I am writing this blog because I recently ran across “nologging” corruption which is considered softl corruption, and the...
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Backup and Recovery of Multitenant Databases
This post covers what you need to consider around backup/recovery when implementing true multitenant databases (More than 1 PDB).First the architecture of CDB and PDBs that matter with recovery.What...
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ZDLRA "store and Forward " feature
Most people didn't notice, but there was a new feature added to the ZDLRA called "store and forward".Documentation on how to implement it is in the "ZDLRA Administration Guide" under the topic of...
View ArticleWhere is my space on DBFS
I just ran into an issue on DBFS where I ran out of space.First here is the df -kFilesystem 1K-blocks Used Available Use% Mounted ondbfs-dbfs_admin2@:/ 20983808 11443696 9540112 55% /dbfs/dbaOK,...
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ZDLRA "Store and Forward " feature
Most people didn't notice, but there was a new feature added to the ZDLRA called "store and forward".Documentation on how to implement it is in the "ZDLRA Administration Guide" under the topic of...
View ArticleOracle RMAN restore/recovery prioritization
This blog post is on what happens when you ask RMAN to restore and recover your database or a portion of your database (like a datafile).This came up with a colleague who asked about the order of...
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