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Erman Arslan
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Erman's posts

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EBS -- there will be a major EBS release beyond 12.2!
EBS Product Development (Cliff
Godwin, Oracle SVP) has announced the roadmap for EBS. According to this updated roadmap, there will be a major EBS release in the future. Maybe this release will be EBS 12.3 :) Anways, the up-to-date roadmap, also includes th...

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Solaris 5.11/SSH -- Password authentication - Permission denied (gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive)
Here is a quick tip for you. If you encounter permission denied errors in ssh (in Solaris or anywhere else), use -vvv argument for the analysis. Ex: ssh -vvv root@<ip_address>.. The output produced by this "ssh -vvv" very readable and most of the time, it w...

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EBS 12.2 -- enabling virtual host for the single host database tier, s_virtual_hostname, s_dbhost, ORA-12541
Recently needed to run an EBS's database tier on a single node database environment. (EBS version was 12.2.4 and the EBS's database version was 11GR2) Actually, running on a single node DB, was only a temporary stage for this EBS. That is, this database tie...

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EXADATA -- my review of Oracle EXADATA published on IT Central Station
This is the second review that I did for ITCentralstation.com. This time for Exadata! I have given the valuable features of Exadata, info about the initial setup, the things that Oracle can do for improvement, my advices to Exadata customers and so on. So, ...

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Exadata -- adding an additional hostname (with different domain name)
I'm writing this blog post, because I think the information that I will share with you below, can not be found on Oracle Support, as a whole. I mean, you can find your own way by filtering the information that you may gather from several documents and insta...

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RDBMS -- Changing hostname of a Standalone Oracle Restart environment
Today, I implemented the alternative disaster recovery solution that I explained in one of my earlier blog post ( http://ermanarslan.blogspot.com.tr/2017/05/rac-asm-disaster-recovery-solution.html ), for building a real disaster environment. The solution wo...

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EBS on Exadata -- Installing rpms for Database Nodes -- a missing info in the documentation
Unfortuneatly, there is no specific document for installing EBS on Exadata, at the moment. This is even true for the new release of EBS, EBS 12.2 That's why, in order to properly install EBS database tier on Exadata, we follow a general EBS installation doc...

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Linux/RDBMS/Scripting -- Oracle Hot backup aware Netapp Snapmirror Update script
Here is a script that I have recently written and deployed on a production site. Ofcourse, it can be written more professionally, but it does the job even in this case. What this script does is actually executing storage commands from a database server. The...

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RDBMS/Exadata -- Estimating the compression ratio and the % gain for HCC // using DBMS_COMPRESSION.GET_COMPRESSION_RATIO
If you are considering buying an Exadata and if you are wondering how much storage space that you can save with the Exadata specific compression methods, you should take a look at this one. You can see the compression ratio and calculate the % gain for a ta...

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RAC ASM -- Disaster Recovery solution (using storage techniques) snapshot/snapmirror, Netapp
This blog post is about an alternative Disaster Recovery solution that I  recently built through a POC (Proof of Concept). The source system was a 2 Node Oracle RAC (Grid + RDBMS both 11.2.0.4) and the target system residing in DR was a 1 Node environment (...
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