OUGF Harmony 2016 Spring Conference Twitter Statistics

If you didn’t come this page from my review about the OUGF Harmony16 Spring Conference, please don’t forget to read it. This post is generated almost automatically by scripts to share the twitter statistics of the conference. The statistics cover the period between May 17 and May 20. I included three hashtags (#OUGF, #OUGF16, #Harmony16), because at the beginning of the conference, people (including me) did not used the official hashtag (#Harmony16).


#Harmony16 Tweets


OUGF Harmony 16 Spring Conference

Last week I took part in the OUGF (Oracle User Group Finland) Harmony 16 Spring Conference. It was a two day event, and held in Helsinki, between May 18th and 19th. In the conference, I gave two speeches: “Essential Linux commands for DBAs” and “Enterprise Manager 13c for DBAs”. Most people expect to me to speak about Enterprise Manager but in my first session, I spoke about the tools which can be used for monitoring (more...)

TROUG Days 2016 İstanbul Twitter Statistics

TROUG Days İstanbul was held last week (April 28th to 29th) at İstanbul Technical University Technopark. I think we used social media, specially twitter very effective, so I wanted to publish some twitter statistics about the event like I did for OUGN Spring Event. The statistics cover the period between April 27 and April 30.

Before sharing the twitter statistics, I would like to write a few words about the event. I feel very proud (more...)

How to Install Oracle 11gR2 XE on Ubuntu

I wanted to import a datapump dumpfile to my laptop, and I wondered if I can install Oracle XE to ubuntu guest. I thought it would be easy because I installed Oracle 10g XE to ubuntu for several times, but I saw that Oracle doesn’t provide debian packages for Oracle 11g XE. So I needed to convert the RPM to debian package (and fix incompatibility problems). Therefor, I installed “alien” package and other required tools (more...)

OMS Upgrade Fails At Repository Configuration With Error ORA-20251

Yesterday, one of my blog readers asked me how I didn’t encounter ORA-20251 error when upgrading my EM12c to EM13c. He also pointed My Oracle Support document (Doc ID 2095025.1). The document says a new record will be inserted into EM_COST_CENTERS table (in fact the table name is EM_COST_CENTERS_E but it’s not relevant) for all users whose department value is not blank during the upgrade. If there are more than one records with blank (more...)

New Oracle ACE Director: Me :-)


I’m very proud to announce that I am accepted as an Oracle ACE Director. Now I’m part of a special club which has only 133 members (for now) in the world. It’s surely a milestone for my carrier. I would like to thank to Gurcan Orhan, Kellyn Pot’Vin-Gorman, Jeff Smith, Julian Dontcheff, Kamran Aghayev and Heli Helskyaho for being reference for my ACED nomination. I would also like to (more...)

OUGN 2016 Twitter Statistics

As I mentioned in my previous post, OUGN Spring event is held on a cruise ship which does round trips between Oslo and Kiel. As I heard from other speakers, in previous years, there were not internet connection on the boat and people were totally isolated from the world (and social media). This year, we had internet connection almost everywhere even in our cabins. So we were able to use tweeter during the event. (more...)

OUGN 2016 Spring Conference

Between March 9th and 12th, I was in Oslo to speak at OUGN 2016 Spring Conference. It is my first time in Norway, so I thought it will be very cold and therefore I prepared well (brought thickest clothes with me) but the weather was surprisingly calm although the thermometer indicates 1-2 degrees celsius. I attended to the speakers dinner organized by OUGN Conference Committee. The dinner was great and I had a change to (more...)

Directory Structure and Locations of Important Trace and Log Files of Enterprise Manager Cloud Control 13c

Because of the size and complexity of the Enterprise Manager Cloud Control software, while browsing through the folders on OMS server, you may feel confused and think that everything is in complete disorder. In fact, the directory structure of EM13c is quite simple. During EM13c installation (“advanced mode”), the installer expects you to enter the folder names:

  • Middleware home location (MW_HOME)
  • OMS instance base location (EM_INSTANCE_BASE)
  • Agent base location

Depending on your inputs, the installer (more...)

EM13c: How to Disable Autodiscovery (and Autopromotion) of Clusterware Managed Targets

After we upgraded EM13c, I encountered a problem about automatically promoted listener targets. Since EM12c, I do not add/promote listeners. In earlier versions of EM12c, I had weird problems while monitoring listeners on RAC systems (such as they are detected down although they’re up). Since then, I don’t monitor them (specially SCAN listeners). In EM12c, when I remove a listener, it doesn’t promoted again. With EM13c, I see that listeners are discovered and promoted automatically (more...)