Posts Categorized: Technical Blog

12c: Fun with WITH!

Last night I couldn’t sleep and what else you’re going to do? I was thinking about Oracle stuff. In Oracle version 12, Oracle has enhanced the WITH clause – traditionally used for sub-query factoring – to allow the declaration of functions and procedures. This can be (ab)used to create a very interesting scenario, that is not very…

How to Configure an Azure Point-to-Site VPN – Part 1

This blog post is the first in a series of three which will demonstrate how to configure a Point-to-Site VPN step-by-step. Today’s post will teach you how to configure a virtual network and a dynamic routing gateway, and the following blog posts will demonstrate how to create the certificates, and how to configure the VPN…

Interesting Behavior of MaxCmdsInTran Parameter

I recently worked on transactional replication issue and discovered interesting behavior of the log reader agent switch called MaxCmdsInTran and wanted to share it with you guys. Lets take a look at  the use of this switch by looking at the msdn documentation below, MaxCmdsInTran number_of_commands Specifies the maximum number of statements grouped into a transaction as the Log…

In-Memory Column Store: 10046 May Be Lying to You!

The Oracle In-Memory Column Store (IMC) is a new database option available to Oracle Database Enterprise Edition (EE) customers. It introduces a new memory area housed in your SGA, which makes use of the new compression functionality brought by the Oracle Exadata platform, as well as the new column oriented data storage vs the traditional…

Create Windows Service for Oracle RAC

It’s my first time on RAC system for Windows and I’m happy to learn something new to share. I created a new service for database (restoredb) only to find out the ORACLE_HOME for the service is “c:\\oracle\\product\\10.2.0\\asm_1″ Any ideas as to what was wrong? C:\\dba_pythian>set oracle_home=C:\\oracle\\product\\10.2.0\\db_1 C:\\dba_pythian>echo %ORACLE_HOME% C:\\oracle\\product\\10.2.0\\db_1 C:\\dba_pythian>oradim -NEW -SID restoredb -STARTMODE manual…

How SQL Server Browser Service Works

Some of you may wonder the role SQL browser service plays in the SQL Server instance. In this blog post, I’ll provide an overview of the how SQL Server browser plays crucial role in connectivity and understand the internals of it by capturing the network monitor output during the connectivity with different scenario. Here is an executive…

Unexpected Shutdown Caused by ASR

In past few days I had two incidents and an outage, for just a few minutes. However, outage in a production environment is related to cost relatively and strictly. The server that had outage was because of failing over and then failing back about 4 to 5 times in 15 minutes. I was holding pager,…

Using SaltStack for Configuration Management

In my last blog post I mentioned that SaltStack is a fully featured configuration management solution, but we never looked into using the tool in that way. Today we will begin to explore some basic examples of configuration management with SaltStack.  We will look at two aspects of configuration management, installing a package, and will…

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