Svetoslav Gyurov technical blog

This is a quick post to highlight two issues I had with Oracle dNFS. Both relate to wrong entries in the oranfstab file. One might encounter ORA-00600 during database creation: DBCA_PROGRESS : 7% DBCA_PROGRESS : 8% ORA-01501: CREATE DATABASE failed ORA-00600: internal error code, arguments: [KSSRMP1], [], [], [], [], [], [], [], [], [], [], [] ORA-17502: ksfdcre:3 Failed

It's this time of the year again when one of the biggest and last for the year Oracle User Groups is being held and that is UK Oracle User Group Conference. I'm very grateful and proud that I'll be speaking on this great conference, here are my talks: Presentation Title:

Deployment of Exadata requires you to generate configuration using Oracle Exadata Deployment Assistant (OEDA). Within the same the default ASM disk groups names are DBFS_DG, RECOC1 and DATAC1. I usually change those to RECO01 and DATA01 as others doesn't make sense to me and the only place where I

While working on another Exadata project recently I found that OEM12c agents on the compute nodes were installed on different locations on each of the three Exadatas. On one of them was under /home/oracle/agent, another one had them under /opt/oracle/agent and third one had them under

That's not really a problem but annoying issue I had with OEM 12c. Once a standby database is promoted, the database system for the same is showing as metric collections error OR Status Pending. The standby database doesn't need its own system since it will join the primary database system.

Exadata X5-2 and X4-8B racks are delivered with the “Enhanced” PDU metering units connected via the Cisco switch. Although the documentation says they should have static addresses, they don't. You need to configure them manually using serial console connection, this is described in my earlier post here. However if you

This happened to me a month ago right after I applied DBBP7 on 12.1.0.2. For some reason the ora.crf resource didn't start automatically: CRS-5013: Agent "ORAROOTAGENT" failed to start process "/u01/app/12.1.0.2/grid/bin/osysmond" for action "

This will be simple and short post on an issue I had recently. I got the following error while running the first step of onecommand - Validate Configuration File: 2015-07-01 12:31:03,712 [INFO ][ main][ ValidationUtils:761] SUCCESS: NTP servers on machine exa01db02.local.net verified successfully 2015-07-01 12:

While deploying an X5 Full Rack recently it happened that the Grid Infrastructure Management Repository was not created by onecommand. The GIMR database was optional in 12.1.0.1 and became mandatory in 12.1.0.2 and should be automatically installed with Oracle Grid Infrastructure 12c release 1

I've done several Exadata deployments in the past two months and had to upgrade the Exadata storage software on half of them. Reason for that was because units shipped before May had their Exadata storage software version of 12.1.2.1.0. The upgrade process of the database nodes

This is just a quick post to highlight a problem I had recently on another Exadata deployment. For the most customers the management network on Exadata is routable and the DNS servers are accessible. However in a recent deployment for a financial organization this wasn't the case and the storage

I've done several Exadata deployments recently and I have to say of all the components PDUs were hardest to configure. Important to notice that unlike earlier generations of Exadata the PDUs in X5 are Ehnanced PDUs and not Standard. Reading the public documentation (Configuring the Power Distribution Units) it says

I was recently upgrading an Exadata 12.1.0.2 DBBP6 to DBBP7 and as usual I went for the latest opatch version which was 12.1.0.1.7 (Apr 2015) as of that time. After running the opatchauto apply or opatchauto apply -analyze I got the following error:

I'm pleased to say that I will be speaking at the UKOUG Systems Event 2015, held at Cavendish Conference Center in London, 20 May 2015. My session "Oracle Exadata Meets Elastic Configurations" starts at 10:15 in Portland Suite. Here is the agenda of the UKOUG Systems Event.

With the release of Exadata X5 Oracle introduced elastic configurations and changed the process on how the initial configuration is performed. Back before you had to run applyconfig.sh which would go across the nodes and change all the settings according to your config. This script has now evolved and

During a recent X5 installation I had to configure Link Aggregation Control Protocol (LACP) on the client network of the compute nodes. Although the ports were running at 10Gbits and default configuration of Active/Passive works perfectly fine the customer wanted even distribution of traffic and workload across their core

It's been a while since my last post but I was really busy working on a number of projects. The purpose of this post is to highlight an issue I had while building a standby database. The environment we had - three 11.2.0.3 databases at host A

I'm working on Oracle database migration project where customer have chosen commodity x86 hardware with RHEL6 and EMC storage. I've done many similar installations in the past and I always used the native MPIO in Linux (DM-Multipath) to load balance and failover I/O paths. This time however I've got

Just a short post on a problem I encountered recently. I had to install 11.2 GI and right after running the installer I got a message saying permission denied. Below is the exact error: [oracle@testdb grid]$ ./runInstaller -silent -showProgress -waitforcompletion -responseFile /u01/software/grid/response/grid_install_20140114.

Happy New Year! So many things happened in the past six months, I really can't tell how quickly the time passed. As people say the life is what happens to you while you are making plans for the future. I wish I had the time to blog more in the