Collaborate 16: My sessions

I’ll be at Collaborate 16 next month and looking forward to seeing lots of good friends, learning some new things, and sharing a little experience too. For the last of those, I’ll present 3 sessions, er, more like 2.2 sessions:

  • Wed, 13-Apr, 12:45-12:55pm: Oak Table World 10-minute Lightning talk “Tools used for security and compliance on Linux”
  • Wed, 13-Apr, 3-4pm: Oak Table World session “IPv6: What You Need to Know (with Linux & Exadata references)”
  • (more...)

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 was one-off.

The cell disk creation failed as below:

[root@exa01db01 linux-x64]# ./install.sh -cf Customer-exa01.xml -s 8

 Initializing
 Executing Create Cell Disks
 Checking physical disks for errors before creating celldisks.........................
 Restarting cell services....................................................
 ERROR:

 Stopping the RS, CELLSRV,  (more...)

Oracle as the new IBM — has a long decline started?

When I find myself making the same observation fairly frequently, that’s a good impetus to write a post based on it. And so this post is based on the thought that there are many analogies between:

  • Oracle and the Oracle DBMS.
  • IBM and the IBM mainframe.

And when you look at things that way, Oracle seems to be swimming against the tide.

Drilling down, there are basically three things that can seriously threaten Oracle’s market (more...)

Backup to ZFS Storage Appliance Best Practices for Exadata Database Machine

I made a presentation called "Best Practices for Exadata Maximum Availability" at BGOUG autumn event last week. In addition to general Exadata best practices about backup&recovery, disaster recovery, RAC&ASM, corruption detection features; i reserved half of my time to speak about integration of Exadata and ZFS storage appliance for the best performance of database backup&recovery. This topic

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 usually change those to RECO01 and DATA01 as others doesn’t make sense to me and the only place where I find the default ones is on Exadata.

I had an incident last year where the Exadata deployed half way through and names were left by default (more...)

Oracle SPARC M7 Processor Breaks the “Sacrifice Performance for Security” Rule and Much More

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 ...

The post Oracle SPARC M7 Processor Breaks the “Sacrifice Performance for Security” Rule and Much More appeared first on VitalSoftTech.

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 /home/oracle/agent, another one had them under /opt/oracle/agent and third one had them under /oracle/agent. Obviously this was not the standard and the agents had to be moved under /u01/app/oracle/agent. The only problem with that was that the three Exadatas were already discovered (more...)

Couchbase 4.0 and related subjects

I last wrote about Couchbase in November, 2012, around the time of Couchbase 2.0. One of the many new features I mentioned then was secondary indexing. Ravi Mayuram just checked in to tell me about Couchbase 4.0. One of the important new features he mentioned was what I think he said was Couchbase’s “first version” of secondary indexing. Obviously, I’m confused.

Now that you’re duly warned, let me remind you of aspects of (more...)

OOW 2015: my presentation

I don’t have an official OOW presentation in the conference this year. However, I am presenting a session at the Oak Table World 2015 event behind held concurrently with OOW 2015. My topic is “Exadata Database Machine Security” and I plan to review some of the newest updates to security for the Exadata Database Machine engineered system.

As the website indicates, the event is completely free and there is no pre-registration or enrollment required–just show (more...)

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 to configure them manually using serial console connection, this is described in my earlier post here.

However if you forget to exit the serial console connection to the PDU and then try to login using SSH later you’ll get the following message:

login as:  (more...)

Exadata 12.1.2.2.0 Software is Released

Good new features announced, such as finding Flash Cache and Flash Log statistics on AWR, automatic ASM data redundancy check even shutting down a storage server by pressing the power button or through ILOM, preventing Flash Cache population in cell to cell rebalance, disabling SSH on Storage Servers and running CellCLI commands from Compute Nodes via new ExaCLI utility. Find details in the MOS

DBMCLI for Exadata Database Servers

Monitoring database servers for hardware failures in Exadata used to be an issue. We have CELLCLI for storage servers where we can make many administration tasks and set SMTP configuration to receive e-mail for hardware failures. For the DB servers we were able to configure SMTP Client on database server's ILOMs for email alerts but it was not a straightforward and easy configuration as we do in

Restoring a Database to a New Diskgroup

I had the pleasure of rebuilding an Exadata rack for a customer a while back, and it provided a pretty good refresher in backup and recovery for me.  As DBAs, we back up databases all the time, but the restores are performed much less frequently.  In the case of this rack, there were several databases across multiple ASM diskgroups.  One of the goals of the rebuild was to consolidate all of the databases into a (more...)

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 checked include the database, cell servers and the network. This tool further reviews the configuration of the system and compares with the best practices. […]

The post Latest Release of Oracle Exadata Exachk and HealthCheck appeared first on VitalSoftTech.

A Deep Dive into ASM redundancy in Exadata

I made this presentation at Serbia Oracle User Group event in Zlatibor and Harmony 2015 event in Tallinn at last month. Both were very nice organizations that i really enjoyed, learned much and met with many Oracle experts. I prepared this presentation to answer to following questions, which i think are really important for Exadata Database Machine administrators: - To what degree, disk and

#C15LV Collaborate’15 updates!!

Hi All, Last week, I registered my presence at Collaborate’15 in Las Vegas as a speaker, attendee and at Oracle demo booth duty. It was an awesome experience meeting some polished brains and smart minds. After the first day of registration, I attended the #DBIM12c session by Maria Colgan, #DB12c Multitenant by John McHugh and #Exadata session … Continue reading

Exadata Documentation Available

Please join me in welcoming the Exadata product documentation to the internet. It’s been a long time coming, but glad it’s finally made an appearance!

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.

Oracle 12.1.0.2 Bundle Patching

I’ve spent a few days playing with patching 12.1.0.2 with the so called “Database Patch for Engineered Systems and Database In-Memory”. Lets skip over why these not necessarily related feature sets should be bundled together into effectively a Bundle Patch.

First I was testing going from 12.1.0.2.1 to BP2 or 12.1.0.2.2. Then as soon as I’d done that of course BP3 was released.

So (more...)

UKOUG Tech14 slides – Exadata Security Best Practices

I think 2 years is long enough to wait between posts!

Today I delivered a session about Oracle Exadata Database Machine Best Practices and promised to post the slides for it (though no one asked about them :). I’ve also posted them to the Tech14 agenda as well.

Direct download: UKOUG Tech14 Exadata Security slides