Improving data move on EXADATA II

Writing log records

The last post in this series introduced the problem briefly. You find that post here.

In this post I’ll talk about the changes made to make that writing of log records fast enough. There were 50 million records that was written. Each of them pretty much in its (more...)

Faster data move on EXADATA I


In my work among other things I tune and tweak solutions for EXADATA. Today I’ll write about a big improvement we achieved with a process that moves data from the operational tables to the ones where the history is stored.

This will not be a technical post. While I (more...)

Security Fix Breaks Recovery

Oracle’s “Security Alert Advisory for CVE-2012-3132” issued a warning about an attack vector that once again was discovered by security expert David Litchfield. The vulnerability allows to execute SQL code with SYS privileges by using object names containing quotation marks, if the attacker has authorized access to the database, has CREATE TABLE and CREATE PROCEDURE privileges […]

Monitoring Oracle Performance with AppDynamics

One of my customers uses AppDynamics as their tool of choice for Application Performance Management of a multi-tier, B2B/B2C application environment with several Oracle Databases at the back end. This tool gives a graphic overview of the application infrastructure, discovers (JDBC or .net) database queries automatically and provides metrics on the response time for those database […]

NZOUG 2013 Conference: Agenda online – register while Earlybird Pricing still here!

The New Zealand Oracle Users Group - NZOUG Conference 2013 is open for registrations and Earlybird pricing is still available! The agenda is now available.

NZOUG 2013 is being held in Wellington at the iconic Te Papa Museum on the beautiful waterfront on the 18th and 19th of March, with an additional Workshop Day on the 20th March.

The conference will see a wealth of brilliant speakers from around the world, including Tom Kyte, Graham Wood, Andrew Holdsworth, John Schiff and Nadia Bendjedou and of course top speakers from Middle Earth (NZ) as well. Tom, Andrew and Graham will be (more...)

Amazon announces Redshift, a data warehouse service!


Today at Amazon AWS re:invent, Amazon announced a cloud service for data warehouse customers. It allows to easily analyse petabytes of data, interacts with known BI solutions, and it’s usually 10 times faster than traditional implementations… queries run really blazing fast! This service is certified by MicroStrategy and Jaspersoft.

Redshift runs (more...)

Cloud Databases : MongoDB


For several years I’ve been using Oracle and other SQL relational databases. I’ve dedicated most of the time of my researching and developing on Oracle technology. There’s no question that Oracle leads on site installations and that the quality of the products and the ROI is one of the best. (more...)

ORA-00001: unique constraint (SYS.I_PLSCOPE_SIG_IDENTIFIER$) violated

Just a quick mention when you get the error bellow while trying to create a trigger for example:




ORA-00603: ORACLE server session terminated by fatal error
ORA-00600: internal error code, arguments: [kqlidchg1], [], [], [], [], [], [], [], [], [], [], []
ORA-00604: error occurred at recursive SQL level 1
ORA-00001: unique constraint (SYS.I_PLSCOPE_SIG_IDENTIFIER$) violated
00603. 00000 -  “ORACLE server session terminated by fatal error”
*Cause:    An ORACLE server session (more...)

Follow Beyond Oracle on facebook


Hi folks,

We can’t stop the social flow! Social networks are ruling the world. So as I had some free time lately, I decided do create a facebook fan page. For most of us with a facebook profile visited daily, it’s easier to follow syndications and we’ve got a better (more...)

Failed creating physical standby database

These days I’m implementing Oracle Dataguard for two Oracle databases 10.2 as part of disaster recovery project, one of them is around 1.7TB, not yet production. As part of the DG setup backups have to be available for both primary and standby. I preferred to use ASM and was able to negotiate with the storage admin to run storage replication for the FRA disks during the backup. This way I would have the same structure and files, locally at the disaster site immediately after the backup of the primary database is completed.

Unfortunately two weeks passed and by (more...)

Don’t be evil Google!


In the last 10 weeks suddenly I lost 80% of my blog visits… thanks to google! In the last 6 months I found dozens of copycats of posts I wrote and those sites have a greater rank than my legit original blog!

For that, Thank you a lot google… you’re (more...)

When will RHEL6 be certified?

Red Hat Enterprise Linux has been out since November of 2010.  Here we are 16 months later and it's not certified for database use by Oracle yet. Yes, I know the database can be installed on RHEL6.  In fact, I have it running in my development environment right now with no issues related to the OS/DB integration.  Try to get Oracle Support to help you on those platforms for an issue unrelated to

ASM diskgroup unable to mount because of duplicate disk

This is something I would like to share for a long time, but for one or another reason I didn’t. The error is nothing special, but then I run into very interesting case.

This happen when I had to shutdown one server for maintenance and then boot it again. Once the OS started I notice that the database didn’t ran automatically. When I try to run it manually I got the following error:

SQL> startup
 ORA-01078: failure in processing system parameters
 ORA-01565: error in identifying file '+DATA/orcl/spfileorcl.ora'
 ORA-17503: ksfdopn:2 Failed to open file +DATA/orcl/spfileorcl.ora
 ORA-15077: could not locate  (more...)

Oracle OSWatcher tool and yast for EM Grid Control


These days I configured Oracle OSWatcher tool and yast package for EM Grid Control used to manage and monitor Oracle servers. I want to share how quickly to configure and start using them on Linux.



OSWatcher invokes system utilities like ps, top, iostat, vmstat, netstat and collects data according to the specified parameters. You can download it from Metalink.

unzip it to OSWatcher directory you would use($OSWATCHER_HOME)

tar -xvf oswbb4.0.tar



OSWatcher has been renamed to OSWatcher Black Box to avoid the confusion with the too many tools with this name. OSWatcher Black Box (more...)

Resumes & Job Objectives

I've been reviewing a lot of resume's lately.  Please tell me, what is the purpose stating your "Job Objective"?  Isn't it implied that your objective is to find a new job, specifically my job? I assume you're dynamic and technical and your vast expertise will help my company conquer the world. Also, what is the purpose of summarizing your experience on the first page and then giving me eight

For People That Have Managers

Interesting take on what managers are thinking:

Clone Database from one server to another


I think it is time to write another blog post. I will talk about an old but very useful way how to clone a database from one server to another.  In my particular case it is the best solution that perfectly fits to all requirements put on the (more...)

Is SQL*Plus Resumable?

I am using resumable space for a lot of my operations. However, it seems as though the SQL*Plus copy command doesn't respect the resumable feature? Note, I am issuing an "alter session enable resumable timeout 14400" through a login trigger. I know this works because if I do the same type of operation through an INSERT/SELECT through a dblink, my session waits for more space to be added.

Interesting Error

We just upgraded one of our dbs to plus some patches.  Today an interesting ORA-07445 was thrown to the alert.log: ORA-07445: exception encountered: core dump [__intel_new_memcpy()+382] [SIGILL] [ADDR:0x3FE5CAE] [PC:0x3FE5CAE] [Illegal operand] [] Searching metalink didn't get us anywhere, so we opened a TAR (or iTar, or SR, or ServReq, or whatever the heck they are calling

Common Sense

Developer: I am running this query: DELETE FROM tab; It's been running since 2PM yesterday.  Can you make it go faster? DBA: You shouldn't delete 80M rows in a single transaction.  You should have used TRUNCATE instead of DELETE.  I have killed your session and it will be a while before it completes. Developer (5 minutes later): I tried TRUNCATE but it says my table is locked. DBA: I know, the