RHEL6 udev and EMC PowerPath
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...
View ArticleSmart firewalls
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...
View ArticleHow to configure Link Aggregation Control Protocol on Exadata
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...
View ArticleapplyElasticConfig.sh fails with Unable to locate any IB switches
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...
View ArticleSpeaking at UKOUG Systems Event and BGOUG
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...
View Articleopatch 12.1.0.1.7 fails with System Configuration Collection Failed
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...
View ArticleHow to configure Power Distribution Units on Exadata X5
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...
View ArticleHow do I change DNS servers on Exadata storage servers
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....
View Articledbnodeupdate.sh post upgrade step fails on Exadata storage software 12.1.2.1.1
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...
View ArticleMGMTDB not automatically created on Exadata X5 and GI 12.1.0.2
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...
View ArticleExadata’s onecommand fails to validate NTP servers on storage servers
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 ][...
View ArticleStart of ‘ora.crf’ failed after update to 12.1.0.2 DBBP7
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...
View ArticleExadata X5 PDU – CLI already in use
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...
View ArticleDatabase system target in pending status for standby database in OEM 12c
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...
View ArticleIntroducing Oracle ASM Filter Driver
The Oracle ASMFD (Filter Driver) was introduced in Oracle Database 12.1.0.2 and as of the moment it is available on Linux systems only. Oracle ASM Filter Driver is a kernel module very much like the...
View ArticleHow to move OEM12c management agent to new location
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...
View ArticleHow to rename ASM disk groups in Exadata
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...
View ArticleCome and hear me speak at UKOUG Tech 15
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...
View ArticleIssues with Oracle Direct NFS
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%...
View ArticleExadata onecommand fails at cell disk creation
I was installing another Exadata last month when I got an error on create cell disks step. I’ve seen the same error before when I was extending two to three rack Exadata configuration but thought it...
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