Hi,This is my blog post on my organisation blog site.Please do visit part1 and part 2Understanding GC for Memory Problems: Part-1Understanding GC for Memory Problems: Part-2
Monday, 28 December 2009
Thursday, 24 September 2009
unable to connect to MySQL Or MySql is not Allowing more Connections
Posted on 07:20 by Unknown
some times aborting connections or interrupting process lead to another problem to server from stop giving connections to client. that is server do not allow any more connections to client.probable causes would be. client is idle more than wait_timeout or due to long queries getting aborted from client orclient makes mistake in authentications while connecting to database.all these lead to
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException
Posted on 07:13 by Unknown
I have noticed this error in my MySql Outage, suddenly going down due to overload.after my observation I found that this kind of error mostly will cause because of system variables settings of wait_timeout and interactive_timeout on mysql server is set lower than datasourceidle timeout period.my datasource pooling property for conection time out is set to 1 minon server variable wait_timeout is
Monday, 31 August 2009
Upgrading MySQL 4.x to 5.x
Posted on 08:54 by Unknown
This note give brief about how to uninstall MYSQL 4.1.xx and install MYSQL 5.1.xx on Linux OSlately I have found similar steps on following site you can take help of this as well http://confluence.atlassian.com/display/DISC/Prerequisites+and+installation+on+Fedora+or+RHEL+Linuxfirst steps to find where current version of MYSQL has been installedits location of binaries, datafiles and its config
Friday, 26 June 2009
Getting started with Ajax: Basics.
Posted on 08:17 by Unknown
Background: I had used XmlHttp in my javascripts for quite long and extensively. espically dealing with grid control... but lately I come to know that it was called as an AJAX... which has much more than that... to make your UI richer. A common way of calling ajax function is to create an object of XMLHttpRequest. this you can either use it directly or can use wrapper libraries available in the
Friday, 22 May 2009
Web Service Quick Start
Posted on 05:48 by Unknown
What are Web Services? Web services are application components Web services communicate using open protocols Web services are self-contained and self-describing Web services can be discovered using UDDI Web services can be used by other applications XML is the basis for Web services How Does it Work? The basic Web services platform is XML + HTTP. XML provides a
Some Notes on Coding
Posted on 05:43 by Unknown
some of the points you should note while doing development 1. on java Use primitive data types instead of objects as instance variables. Use the final modifier on instance-variable definitions to create immutable internally accessible objects Eliminate unnecessary casts (use jdk1.5 feature) String.equals() is expensive if you are only testing for an
web performance: have you tried this?
Posted on 05:31 by Unknown
DEFER Your Scripts DEFER is a relatively obscure attribute of the script element, but the performance-minded page author can use it to indicate to Internet Explorer 4.0 or later that the script tag contains no immediately executing code that impacts the document before the load event fires. Combined with the SRC attribute, the DEFER attribute can be used on a script tag to indicate to Internet
Monday, 18 May 2009
Replication... small note
Posted on 06:17 by Unknown
What is Replication In Simple words, Replication is the simply process of copying data from one location to another.In MySQL database server, Master is main server from which data to be copied and Slave is the server on which data copied.Replication is asynchronous - means your replication slaves do not need to be connected permanently to receive updates from the master,depending on the
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