Posts Categorized: Technical Blog

Comparing CPU Throughput of Azure and AWS EC2

After observing CPU core sharing with Amazon Web Services EC2, I thought it would be interesting to see if Microsoft Azure platform exhibits the same behavior. Signing up for Azure’s 30-day trial gives $200 in credit to use over the next 30-day period: more than enough for this kind of testing. Creating a new virtual…

SaltStack for Remote Parallel Execution of Commands

There are many scenarios when a SysAdmin has to do a “box walk” of the entire infrastructure to execute a command across many servers. This is universally accepted as one of the less glamorous parts of our job. The larger the infrastructure, the longer these box walks take, and the greater chance that human error…

What’s New with Apps Password Change in R12.2 E-Business Suite ?

Apps password change routine in Release 12.2 E-Business Suite changed a little bit. We have now extra options to change password, as well as some manual steps after changing the password using FNDCPASS. There is a new utility introduced called AFPASSWD. This utility unlike FNDCPASS wont require you to enter apps and system user password,…

Essential Hadoop Concepts for Systems Administrators

Of course, everyone knows Hadoop as the solution to Big Data. What’s the problem with Big Data? Well, mostly it’s just that Big Data is too big to access and process in a timely fashion on a conventional enterprise system. Even a really large, optimally tuned, enterprise-class database system has conventional limits in terms of…

Differences Between R12.1 and R12.2 Integration with OAM

With the revamp of technology stack in R12.2 of Oracle E-Business Suite (EBS) , the way we integrate Oracle Access Manager (OAM) has changed. R12.2 now is built on Weblogic techstack, which drastically changed how it integrates with Other Fusion Middleware Products like OAM Here is a overview of Steps to configure OAM with EBS…

vCPU sharing in EC2: HVM to the rescue?

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I’ve been doing some testing to clarify what a vCPU in Amazon Web Services actually is. Over the course of the testing, I experienced inconsistent results on a 2-thread test on a 4-vCPU m3.xlarge system, due to the mislabeling of the vCPUs as independent single-core processors by the Linux kernel. This issue manifests itself in…

Oracle Database: Query to List All Statistics Tables

If you were a big fan of manual database upgrade steps, perhaps you would have come across this step many times in your life while reading MOS notes, upgrade guides, etc. Upgrade Statistics Tables Created by the DBMS_STATS Package If you created statistics tables using the DBMS_STATS.CREATE_STAT_TABLE procedure, then upgrade these tables by executing the following…

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