Posts Categorized: Technical Blog

Is X a Big Data product?

Virtually everyone in data space claims today that they are a Big Data vendor and that their products are Big Data products. Of course, if you are not in Big Data then you are legacy. So how do you know whether a product is a Big Data product?

Using the ILOM for Troubleshooting on ODA

I worked on root cause analysis for a strange node reboot on client’s Oracle Database Appliance yesterday. The case was quite interesting from the perspective that none of the logs contained any information related to the cause of the reboot. I could only see the log entries for normal activities and then – BOOM! –…

Fixing Windows RAC Listener to Listen On IP Address of Hostname

Recently, there was an issue after a node was added to an existing Windows RAC cluster. After everything was set up, the local listener was not listening to the IP address (192.168.0.37) corresponding to the node’s hostname. Oracle version was 11.2.0.4. The listener.ora was configured properly with the following line: LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by…

Loose Coupling and Discovery of Services With Consul — Part 1

Today I would like to demonstrate the use of Consul to help achieve loose coupling and discovery of services, two important principles of service-oriented architecture (SOA) present in modern, elastic infrastructures. If you have ever designed an architecture to be deployed in a cloud computing environment, then you are probably already familiar with the idea…

Oracle Database: Script to Purge aud$ Table Using dbms_audit_mgmt Package

With an increase in requirements on database security, database auditing is part of most production databases nowadays. The growth on Oracle database audit table”‘aud$” always add spice on a DBA’s life. Since this table growth directly impacts the database performance, this table got special place on every DBA’s heart. Traditionally we follow many methods to purge…

Azure Storage: Creating, Maintaining, and Deleting SQL Server Backups

This post covers how to create, monitor, maintain, and automatically delete SQL Server backups. What is Azure Storage and why should you use it? Microsoft Windows Azure is Microsoft’s cloud offering for offsite storage. It offers the ability to seamlessly enable massive storage, Virtual Servers, SQL Server database instances, and many other options without having…

12c: How to Restore/Recover a Small Table in a Large Database

As a DBA, you will receive requests from developers or users, indicating that they deleted some data in a small table in a large database a few hours prior. They will probably want you to recover the data as soon as possible, and it will likely be a critical production database. Flashback will not be enabled, and the recycle bin…

How to Configure an Azure Point-to-Site VPN – Part 3

This blog post is the last of this series and which will demonstrate how to configure a Point-to-Site VPN step-by-step. In my first blog post, I demonstrated how to configure a virtual network and a dynamic routing gateway. This was followed by another post about how to deal with the certificate. Today we will learn how to…

How to Configure an Azure Point-to-Site VPN – Part 2

This blog post is the second in a series of three which will demonstrate how to configure a Point-to-Site VPN step-by-step. In my first blog post, I demonstrated how to configure a virtual network and a dynamic routing gateway. Today’s post will be about creating certificates. CREATING CERTIFICATES At this step, we will create and…

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