Author Archives: omkreddy

The Art of Java Application Performance Analysis and Tuning – Part 5

Posted on May 8, 2013

This is the fifth article in the series of articles exploring the tools and techniques for analyzing, monitoring, and improving the performance of Java applications. The Art of Java Application Performance Analysis and Tuning-Part 1                                      The Art of Java Application … Continue reading →

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The Art of Java Application Performance Analysis and Tuning – Part 4

Posted on May 8, 2013

This is the fourth article in the series of articles exploring the tools and techniques for analyzing, monitoring, and improving the performance of Java applications. The Art of Java Application Performance Analysis and Tuning-Part 1                                      The Art of Java Application … Continue reading →

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The Art of Java Application Performance Analysis and Tuning – Part 3

Posted on May 7, 2013

This is the third article in the series of articles exploring the tools and techniques for analyzing, monitoring, and improving the performance of Java applications. The Art of Java Application Performance Analysis and Tuning – Part 1        … Continue reading →

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The Art of Java Application Performance Analysis and Tuning – Part 2

Posted on May 7, 2013

This is the second article in the series of articles exploring the tools and techniques for analyzing, monitoring, and improving the performance of Java applications. The Art of Java Application Performance Analysis and Tuning-Part 1                                     The Art … Continue reading →

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The Art of Java Application Performance Analysis and Tuning – Part 1

Posted on May 7, 2013

This is the first article in the series of articles exploring the tools and techniques for analyzing, monitoring, and improving the performance of Java applications. The Art of Java Application Performance Analysis and Tuning-Part 2                                     The Art … Continue reading →

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Simplified Hadoop Versioning Image

Posted on April 20, 2013
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EhCache — Too Many Open Files

Posted on December 27, 2012

EhCahce with  “diskPersistent=true” flag  is used to persist  the cache values to disk and can be used after system restarts. If you have many caches with “diskPersistent=true” then you may get “Too many Open files Exception”.  This is because EhCache is using nearly 30 open … Continue reading →

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Hibernate – Oracle : Creating Index For Foreign-Key Columns

Posted on December 27, 2012

In Oracle adding Index for Foreign Key columns is  important for performance reasons.  And also if you are using transactions,  It is important to create index for FK columns.  With out  index your application may experience many deadlock problems. These indexes are automatically generated for MySQL … Continue reading →

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Airtel 3G datacard on Ubuntu 11.04/11.10

Posted on April 21, 2012

This procedure is for a Huawei E1731 USB modem that I got from Airtel. 1. Install wvdial   sudo apt-get install -yq usb-modeswitch usb-modeswitch-data   wvdial 2. Configure modem (Make sure you replace the<phone number> placeholder with your actual phone number. … Continue reading →

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JacORB Configuaration

Posted on April 2, 2012

Add the following JacORB  properties to java command line or update in jacorb.properties file To enable general debug logs add the below line -Djacorb.log.default.verbosity=4 To enable notification debug logs add the below line -Dorg.jacorb.notification.log.verbosity=4 To increase POA Queue. Increase this … Continue reading →

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