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Rent, don't buy your on-premise Exadata
As I described last week, Oracle recently announced that you can now put their hardware and cloud software inside your own datacenter with the Oracle Cloud Machine.They now seem to be going a step...
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How 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...
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Upgrade yourself from DBA to DMA
In any profession, learning never ends. From my very personal perspective and own exprience, I strongly beleinv in one who upgrade his skills always stays a step ahead from the rest. To stay...
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Oracle Database 12.2 available on Exadata Express Cloud Service (new features...
My friend told me today that Oracle 12.2 is available on the cloud on the following link: https://cloud.oracle.com/databaseI checked that link. The following database cloud services can be seen on that...
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Extending 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...
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How 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...
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Exadata 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...
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Exadata migration
Had a wonderful Sangam16 conference in India, and received much applaud for the two presentations delivered, Oracle 12c multitenancy and Exadata migration best practices.After a very short trip to...
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Unable 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....
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onecommand 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...
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Upgrading 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...
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Whats new in Exadata X7
Oracle announced its new Exadata Database Machine X7 during OOW 2017. Lets walk through quickly about the key features of X7.Key featuresUp to 912 CPU core and 28.5TB memory per rack2 to 19 DB servers...
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Exadata X5-2L deployment & Challenges
A brand new Exadata X5-2L eighth rack (I knew the latest is X7 now, but it was for a POC, so no worries) has been deployed recently at a customer for Oracle EBS Exadata migration POC purpose. Its...
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Oracle EBS Suite blank Login page - Post Exadata migration
As part of EBS database migration on Exadata, we recently deployed a brand new Exadata X5-2L (eighth rack), and migrated an Oracle EBS Database from the typical storage/server technologies. Below are...
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Exadata Write-back cache and free buffer waits
Prior to storage server software version 11.2.3.2.0 (associated with Exadata X3), Exadata Smart Flash Cache was a “write-through” cache, meaning that write operations are applied both to the cache and...
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Redo on SSD: effect of redo size (Exadata)
Of all the claims I make about SSD for Oracle databases, the one that generates the most debate is that placing redo logs on SSD is not likely to be effective. I’ve published data to that effect in...
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To DMA, Or Not To DMA
Exadata is a different system for a DBA to administer. Some tasks in this environment, such as running the exachk script, require root O/S privileges. This script can be run by the system...
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Can the Exadata Smart Flash Cache slow smart scans?
I’ve been doing some work on the Exadata Smart Flash Cache recently and came across a situation in which setting CELL_FLASH_CACHE to KEEP will significantly slow down smart scans on a table.If we...
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Using SSD for a temp tablespace on Exadata
I seem to be getting a lot of surprising performance results lately on our X-2 quarter rack Exadata system, which is good – the result you don’t expect is the one that teaches you something new.This...
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Troubleshooting Oracle DBFS mount issues
On Exadata the local drives on the compute nodes are not big enough to allow larger exports and often dbfs is configured. In my case I had a 1.2 TB dbfs file system mounted under /dbfs_direct/.While I...
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Migrating a Database to an Exadata Machine
We have been migrating our databases from the non-Exadata servers to the Exadata Database Machine using the “RMAN 11g Duplicate standby from Active database” command, to create the standby databases on...
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ASM Diskgroup shows USABLE_FILE_MB value in Negative
Today while working on ASM diskgroup i noticed Negative value for USABLE_FILE_MB. I was little surprised as it has been pretty long that i worked on ASM. So i started looking around for blogs and mos...
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Oracle Enterprise Manager–Based Patching
Friends,Hope those of you who could make it, are enjoying Oracle Open World (OOW).An interesting OOW session my colleague Hari Srinivasan pointed out for Wednesday Oct 1 this week: Databases to Oracle...
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How Can I Compress Thee
“You can swim all day in the Sea of Knowledge and not get wet.” ― Norton Juster, The Phantom Tollbooth In previous posts compression options have been discussed, and now it’s time to see how Oracle...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
Oracle Database 12.1.0.2 delivers several noteworthy enhancements to the Oracle Multitenant Option of the Oracle Database. We will begin to take a look at these enhancements in our blog posts.In Oracle...
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Exadata 12c New Features RMOUG Slides
I've finally gotten around to post my RMOUG Slide Deck on Slideshare. Hopefully this is helpful to folks looking at new features in Exadata.
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How 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...
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applyElasticConfig.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...
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How 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...
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How 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....
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dbnodeupdate.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...
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MGMTDB 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...
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You will now be able to use Exadata on the Oracle Database Cloud
Friends, ever wanted to use Exadata for your databases, but couldn’t? Oracle will now make it possible to use Exadata databases directly on the cloud.Last month, on June 22, Oracle announced the...
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Exadata’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 ][...
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Latest Release of Oracle Exadata Exachk and HealthCheck
Announcing the release of Exachk Version 12.1.0.2.4_20150702. Exachk is a tool that is used to quickly determine the health of the entire Exadata infrastructure. Some of the key components that are...
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Latest Realease of Oracle Exadata Exachk and HealthCheck
Announcing the release of Exachk Version 12.1.0.2.4_20150702. For more details on Oracle Exadata Exachk and healthcheck, take a look at the MOS article “Oracle Exadata Database Machine exachk or...
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Shrink/Grow Exadata diskgroups
One of the important tasks that I foresee after an initial Exadata deployment is, mostly prior to DB in production, is to balance/resize the Exadata diskgroups (DATA & RECO). Generally, the space...
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Exadata 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...
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Top 8 Strategies to Thrive at Oracle OpenWorld
Yes! It’s that time of the year again when we start planning for the premier Oracle OpenWorld. So let’s get right into it! Read more here – Top 8 Strategies to Thrive at Oracle OpenWorld o o o o o o...
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How 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...
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Oracle SPARC M7 Processor Breaks the “Sacrifice Performance for Security”...
Oracle Executive Vice President John Fowler used the occasion of Open World 2015 to introduce Oracle's SPARC M7 processor, the fastest in the world. Learn more ...
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How 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...
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Best Practices for Exadata Plug-in for Enterprise Manager, and Real...
A friend asked "I am about to go live with Exadata. I want to ask if there are best practices to setting up Enterprise Manager and the Exadata plug-in."Sure. The following My Oracle Support documents...
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Enterprise Manager 13c - New Look and features
Friends,Oracle Enterprise Manager 13c has been released this Friday. This is what the new Self-Service screen looks like:Enterprise Manager 13c unifies hardware and software management. Important...
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Managing Virtualized Exadata with Oracle Enterprise Manager
A friend wrote:“I am interested in knowing about how Oracle Enterprise Manager 12c can manage a Virtualized Exadata.“First of all, would Enterprise Manager be aware of the different OVMs (Oracle...
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Enhancements to the Oracle Multitenant option in Oracle Database 12.1.0.2 –...
In this blog post series, we are looking at noteworthy enhancements to the Oracle Multitenant option of the Oracle Database in 12.1.0.2. In the previous post, we looked at the new Zone Maps feature,...
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Exadata 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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Storage difference between 2 identical Exa boxes. How and why?
We noticed around 1.6TB storage difference between two Eight (1/8) Exadata boxes while configuring Data Guard. Wondered what went wrong. The Exa box configured for DR was around 1.6TB short compare to...
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Oracle 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 the...
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