I decided to get rid of the Github repository that I had experimented with and to create a new one. The old one had a dump of all my SQL scripts but without any documentation. But, I have updated my Python graphing scripts a bit at a time and have had some recent value from these scripts in my Oracle database tuning work. So, I created a Github repository called PythonDBAGraphs. I think it will (more...)
We have had problems with set of databases over the past few weeks. Our team does not support these databases, but my director asked me to help. These are 18.104.22.168 Windows 64 bit Oracle databases running on Windows 2008. The incident reports said that the systems stop working and that the main symptom was that the oracle.exe process uses all the CPU. They were bouncing the database server when they saw this behavior (more...)
You know there’s a cluster and that means that an HA system exists, but OEM won’t discover it. Of course that means that your RAC databases can’t be discovered either and all of this is making you cranky. Take a deep breath. We can fix this.
The agent can only recognize an HA system when it knows of the clusterware home. For some reason the agents weren’t aware of the CRS_HOME on some of our (more...)
I’m thrilled to be presenting at Collaborate 2016 with my colleague John Sim, on the recently open-sourced Oracle JET! We front-end developers had been seeking a better UI/UX solution from Oracle for quite some time, and they have delivered in a big way.
Upgrading opatch utility consists of two steps
- Remove the old copy of opatch by deleting $OH/OPatch directory
- Unzip the replacement file into your Oracle home directory
But when you try to remove the contents of OPatch directory you get slammed with errors like this:
rm: cannot remove `jlib/.nfs0000000005213282002649ad’: Device or resource busy
rm: cannot remove `jlib/.nfs000000000523b2e4002649ae’: Device or resource busy
rm: cannot remove `ocm/lib/.nfs0000000005226a87002649b3′: Device or resource busy
rm: cannot remove (more...)
In the last post I showed how you can upload a custom theme to the instance repository so that all your developers can choose that theme within the create application wizard. And more importantly, subscribe that theme from the theme repository.
Now the next question is how to update that public theme so that all applications can inherit the changes.
My first attempt was to simply go to Instance Administration – Manage Instance – Public (more...)
I’ve received a number of inquiries lately about the support of DB2 on Delphix and yes, Delphix 5.0 now supports full automation of virtual data for DB2. With the addition of DB2, Delphix now supports full automation of virtual data on all three of the major enterprise databases
- SQL Server
as well as Sybase, MySQL and Postgres.
For more information on DB2 in Delphix 5.0 see
The Universal Theme introduced with APEX 5 is immensly good looking and comes with a powerful Theme Roller to customize it.
With that new theme most, if not all, older themes are obsolete.
That leaves us just with a few corporate designs which can’t (or don’t want to) be replaced by the UT.
Now ideally you want your developers to use that custom theme in all applications and also subscribe to that.
Historically I recommended (more...)
I feel like I have not been posting very much on this blog lately. I have been focused on things outside of Oracle performance so I haven’t had a lot of new scripts to post. I have been quietly updating my Python source code on GitHub so check that out. I have spent a lot of time educating myself in various ways including through the leadership and communication training program that comes from Toastmasters. My new (more...)
Overcoming Your Oracle Data Insecurity
Webinar – Wednesday, March 30 – 10am PT
In 2016, the risks and reasons why companies should secure their sensitive data are well known (Sony, Target, and Anthem just to name a few examples). Yet, most companies have pitiful or limited data security in their Oracle databases.
Join Pete Finnigan, Oracle security specialist, and discover:
AuraPlayer was thrilled to attend Mobile World Congress (MWC) in Barcelona. It was our first time attending this epic conference, and we can assure you it lived up to all the hype.
The conference emphasized the mobile revolution occurring throughout all industries and how organizations need to mobilize their business practices or they’ll be left behind. This further reinforces what Grant Ronald always says, “If (more...)
Cedar held its annual Oracle Day in Oracle’s City office last Thursday – it was actually our 6th year of running the event. The attendance was great – just short of 100 – and with 3 streams of content there was plenty to choose from. If you weren’t there, here’s the highlights of the sessions that I attended:
After the opening keynote from Dan Woolstone, Oracle’s James King and myself spoke to a full room (more...)
A question was raised in Martin Widlake’s session this morning in OUG Ireland 2016. The (excellent) session was about the performance of calling PL/SQL functions from SQL, and Martin scared the audience (or at least tried to scare…) with the fact that read consistency is not kept (with respect to the base SQL statement) when the PL/SQL functions are called from that SQL statement.
The question that was raised was whether this is also (more...)
NFS is the future, has larger bandwidth than FC, market is growing faster than FC, cheaper, easier, more flexible, cloud ready and improving faster than FC.
photo by Paul Oka
- Legacy : FC is becoming legacy like Cobal and the Mainframe. Not going way, but not what you want to invest in.
- Throughput : FC throughput has fallen behind NFS and is the gap is only widening.
- Price : FC is much (more...)
When I am trying to restore the full database to target new host, I have used to catalog the backup piece but It took more time but not complete
RMAN> catalog start with ‘/u02/backup/backup/’;
Starting implicit crosscheck backup at 26-FEB-16
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=6 device type=DISK
Crosschecked 27 objects
Finished implicit crosscheck backup at 26-FEB-16
Starting implicit crosscheck copy at 26-FEB-16
using channel ORA_DISK_1
Disable the recovery file destination, and (more...)
If you are plan to implement rac setup in virtul box for your lab practise, you need to setup a dns configuration necessary steps to use single client access name (SCAN) introduced in 11gR2 RAC.
The DNS setup may be a separate server, or you can make it on any one of the nodes you’re preparing for rac implementation.
Here I have chosed to setup on rac first node, so you need to do some (more...)
The 12c version has introduced a new features called “OCI Client-Side Deployment Parameters” this feature gives you the possibility to override some OCI parameters without even changing your application code.
Let’s make a simple test case using Python and the cx_oracle module (which use the OCI interface) for connecting to the oracle database.
You can find this module for your python version and the database 12c version here.
This is the code of our test case:
Its necessary to take the backup of siebel gateway name server data before or after making any configuration changes. So you should take the backup of siebns.dat file
Administration- system configuration –> Enterprises
Click Backup enterprise ( it will generate siebns.dat along with date in gateway server).
or Command prompt
[siebel@premiadb siebsrvr]$ srvrmgr /g premiadb /e MigEnt /u SADMIN /p password
srvrmgr> backup nameserver
Command completed successfully.
We can use below (more...)
Hello Guys, If you are looking the siebel installation guide on redhat linux 6 , this document will guide you to install siebel 15.o industry application on redhat linux 6.2. This document may be useful for you when you’re going to deployment siebel on your environment.
Download the document :