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How To Edit SM_USER HTTP Header SiteMinder

SM_USER is the header set by siteminder on successful authentication though which application decides on whether to allow the user to login or reject the login request. In our scenario the even after successful authentication at site minder side we were not able to login to application as the SM_USER header was getting set as DOMAIN\USERNAME where as the application was expecting it to be only…

Shell Script For Linux Clear Cache

Linux borrows unused RAM memory for disk caching due to this it looks like the system is low on memory. Usually you don’t need to do anything to clear this memory as Linux automatically manages the RAM and will allocate the cached memory when ever a application asks for the same. However one of our customers had issue with free command output showing low on RAM and due to this there application…

Sometimes we need to increase o decrease the momory in all instances in a Cluster, but to don’t do it instance per instance this script can help us to do it in less time. Below Script can be used to modify Heaps Memory in a websphere Cluster. Please follow below steps to complete the heap memory update. create a file named modifyHeapsPerCluster.py and add the lines bellow. (more…)

OutOfMemoryerror unable to create new native thread

The OutOfMemoryError is due to : unable to create new native thread which indicates there is no issues with Java Heap Size or Memory leak or Java GC unable to reclaim memory. The reason for the exception java.lang.OutOfMemoryError: unable to create new native thread is due to: JVM asking a new thread and the underlying OS cannot allocate a new thread anymore as there is not enough stack memory…

Troubleshooting Server redirected too many times error

While configuring for a API integration where the application server accesses a https url from internet and authenticates for further operations like downloads, validations, etc. We encountered the “java.net.ProtocolException: Server redirected too many times (20)” error in application logs. most of the times its hard to know whether there is a issue with application code or with the proxy server…

OLM to PST Conversion Using Kernel Software

There are situations where you would require to share the mailbox data. Such situations get tricky when you need to share the data with other users who are not using the same email client which you are using. To make you understand, let us consider you are making use of an Outlook for Mac and you need to share the data to an another user’s system who is using MS Outlook. Consequently, it gets…

Apache Tomcat 9 Application Server Quick Review

  Tomcat is the most popular opensource Java application server. It is also considered as a industry standard for setting up development environment by developers. So here in this article we will quickly review the Apache Tomcat application server version 9.x. From this article you will be able to learn what is new with Tomcat 9. In this article we have taken apache-tomcat-9.0.0.M17. Why Tomcat…

Oracle redo log size increase in Oracle 12C

Oracle redo log is the most crucial structure for recovery operations, redo logs consists of 2 or additional preallocated files that store all changes made in database as they occur. Each instance of database change has an associated redo log to guard the info just in case database encounters a failure.Redo log file contains redo records. A redo record or redo entry consists of change vectors,…

How to Use GRUNT JS in Java Development

In this article we will discuss about Grunt JS technology including the pre-requisites. By end of this tutorial we will also learn writing a grunt file for java application. Before we go into details lets learn what is Grunt JS.

  What is Grunt JS:

Grunt js is one of the JavaScript build tool developed using NodeJs, using Grunt JS tool we can bundle all application JS files and CSS files into…

How To Enable TLS 1.2

As we move on to higher level of technological advancements to protect and safe guard information, the older communication protocols like SSL and TLS 1.0 are getting obsolate and even no longer acceptable for PCI compliance. Few months back, the PCI Council released version 3.1 of their Data Security Standard (DSS). The Council has decided that SSL and TLS 1.0 can no longer be used after June 30,…

SQL Server Recovery From Page Header Corruption

There is no doubt in the fact that Microsoft SQL Server provides an effective means to manage database with an ease. However, on the other hand there are high chances of corruption in files of the SQL server. The file corruption restrict users to operate their database and thus, all the server storage files becomes inaccessible. When users try to access these file they encounter one or more error…

413 request entity too large

413 request entity too large errors occur when the request body is larger than the server is configured to allow but specific to tomcat IIS combination with SSO as for few users header size value and max_packet_size is getting bigger than what is set in IIS and Tomcat configurations.This happens as header encodes the user’s group membership in the authorization header, so if a user is part of…

Prepared statement java memory leak

Developers feel more convenient in using PreparedStatement object for sending SQL statements to the database as PreparedStatement object is given a sql statement when it is created and this statement gets sent to DB, gets compiled immediately. As a result when a PreparedStatement is executed, the DB just run the PreparedStatement SQL statement without having to compile it first. One more…

Application Context Oracle Export Import Explained

Exporting and importing a fairly commonly used procedure by many database administrators to export database objects and import them back into other databases but recently while exporting we came across a issue where application contexts were missing while doing a schema only export, where as if you do a complete database export(FULL=Y option) with application context oracle expdp is able to…

Add Text To Bottom Of Every Post in WordPress

Maintaining and upgrading a website sometimes becomes a headache as you have to remember all the custom changes you have done without plugins. So avoid this situation I usually create a how to article on the same so that in case I change my mind and change my theme, all my custom changes can be traced back. In this article we will explain easiest way in add text to bottom of every post in…

Oracle sqlplus output to html explained

We require formatted reports or query outputs for our reporting needs and readability. We had also similar requirement where we used to run cronjobs and needed the sql scripts like tablespace status etc. outputs time to time in a good email format to be shared to broader audience daily. So to achieve this better formatting Oracle provides options to generate html markup outputs which can be used…

RMAN-06149: cannot BACKUP DATABASE in NOARCHIVELOG mode

Running database in noarchivelog mode there will be no possible recovery of database as we will not have any archived redo logs to apply to the restored data files. Only way of recovery is reverting database to the last full backup and in the same process all changes made after the full backup will be lost.

Due to above reason oracle does not allow full database backup when database is on…