Start 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...
View ArticleOracle TNS-12535 and Dead Connection Detection
These days everything goes to the cloud or it has been collocated somewhere in a shared infrastructure. In this post I’ll talk about sessions being disconnected from your databases, firewalls and dead...
View ArticleOracle Exadata X6 released
Oracle has just announced the next generation of Exadata Database Machine – X6-2 and X6-8. Here are the changes for Exadata X6-2: 1) X6-2 Database Server: As always the hardware has been updated and...
View ArticleDead Connection Detection in Oracle Database 12c
In my earlier post I discussed what Dead Connection Detection is and why you should use it – read more here Oracle TNS-12535 and Dead Connection Detection The pre-12c implementation of DCD used TNS...
View ArticleHow to resolve missing dependency on exadata-sun-computenode-minimum
I’ve been really busy last few months – except spending a lot of time on M25 I’ve been doing a lot of Exadata installations and consolidations. I haven’t posted for some time now but the good news is...
View ArticleGrid Infrastructure 12c installation fails because of 255 in the subnet ID
I was doing another GI 12.1.0.2 cluster installation last month when I got really weird error. While root.sh was running on the first node I got the following error: 2016/07/01 15:02:10 CLSRSC-343:...
View ArticleExtending an Exadata Eighth Rack to a Quarter Rack
In the past year I’ve done a lot of Exadata deployments and probably half of them were eighth racks. It’s one of those temporary things – let’s do it now but we’ll change it later. It’s the same with...
View ArticleHow to enable Exadata Write-Back Flash Cache
Yes, this is well-known and the process has been described in Exadata Write-Back Flash Cache – FAQ (Doc ID 1500257.1) but what the note fails to make clear is that you do NOT have to restart cell...
View ArticleOTN Appreciation Day: Oracle Data Guard Fast-Start Failover
Thank you, Tim, for the great idea. There are so many cool database features one could spend weeks blogging about them. A feature which I like very much is Oracle DataGuard Fast-Start Failover, FSFO...
View ArticleSpeaking at BGOUG and UKOUG
It’s my pleasure to be speaking at BGOUG and UKOUG again this year. The coming Wednesday 19th Oct, I’ll be speaking at the UKOUG Systems SIG event here in London (agenda). I’ll talk about Exadata...
View ArticleExadata memory configuration
Read this post if your Exadata compute nodes have 512/768GB of RAM or you plan to upgrade to the same. There has been a lot of information about hugepages and I wouldn’t go into too much details. For...
View ArticleInstalling OEM13c management agent in silent mode
For many customers I work with SSH won’t be available between the OEM and monitoring hosts. Therefore you cannot push the management agent on to the host from the OEM console. Customer might have to...
View ArticleUnable to perform initial elastic configuration on Exadata X6
I had the pleasure to deploy another Exadata in the first week of 2017 and got my first issue this year. As we know starting with Exadata X5, Oracle introduced the concept of Elastic Configuration....
View Articleonecommand fails to change storage cell name
It’s been a busy month – five Exadata deployments in the past three weeks and new personal best – 2x Exadata X6-2 Eighth Racks with CoD and storage upgrade deployed in only 6hrs! An issue I encountered...
View ArticleUpgrading to Exadata 12.1.2.2.0 or later – mind the 32bit packages
This might not be relevant anymore, shame on me for keeping it draft for few months. However, there are still people running an older versions of Exadata storage software and it might still help...
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Oracle Database 12.2 released for Exadata on-premises
We live in exciting times, Oracle Database 12.2 for Exadata was released earlier today. The 12.2 database was already available on the Exadata Express Cloud Service and Database as a service for a few...
View ArticleHow to install Oracle Database Cloud Backup Module
I had the joy of using the Oracle Database Cloud backup module a month ago. Needless to say that things changed since last year and some of the blogs posts I found were not relative anymore. I used the...
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