OutOfMemoryError in SOA

By -
Oracle SOA Suite, while powerful, is not immune to memory issues. One of the most common and disruptive errors administrators face is the java.lang.OutOfMemoryError. Let's break down what it means, why it happens, and how to tackle it—without the copy-paste tech lingo.

What Does OutOfMemoryError Mean?

Imagine your SOA server like a workspace. It can only hold so much stuff before it gets cluttered. If you keep piling in data, background tasks, and logs without cleaning up or expanding the room, eventually it crashes under the weight. That crash in Java terms is: OutOfMemoryError.

It’s the JVM’s way of telling you:

“I’ve run out of memory, and I can’t go on.”

There are different flavors of this error depending on where the memory is exhausted:

  • Heap Space – The general area for object allocation is full.

  • PermGen / Metaspace – Class metadata storage is exhausted.

  • GC Overhead – Too much time is spent on garbage collection, but memory is not being reclaimed.


    🛠️ How to Diagnose It

    • Check Logs: Start with the server.out or nohup.out. Look for the error stack.

    • Analyze Heap Dumps: Use tools like Eclipse MAT to visualize memory usage.

    • Monitor JVM: Tools like JVisualVM or JConsole show memory graphs in real time.


      🧰 Recovery & Fixing Steps

      1. Restart the Server

      It’s a band-aid, but sometimes you just need to flush the memory to restore service quickly.

      2. Increase JVM Heap Size

      Edit the setDomainEnv.sh or startWebLogic.sh

      . Review Composite Behavior

      Identify composites that consume lots of memory—especially those involving loops or transformations.

      4. Archive or Purge Instances

      Use purge scripts or built-in tools to clean up long-living process instances that clog memory.

      5. Enable Lazy Loading of Payloads

      If applicable, enable features that delay loading of large message contents until required.

      6. Tune Garbage Collection

      Switch to a more efficient GC algorithm if necessary (G1GC, for instance), and configure thresholds accordingly.



Comments

Post a Comment

Popular posts from this blog

Interview question for File and FTP Adapter

By -
1)  Why File Adapter is used in SOA Suite tool ?.  File adapter is used to read and write file from and to local system. 2)  Why FTP Adapter is used in SOA Suite tool ?. FTP adapter is similar to File adapter with one difference that this adapter is used to read/write the file from/to remote system. 3)  What all differences we have between File and FTP adapters.  Following are the major differences between File and FTP adapter. File Adapter 1. It is used to deal with local systems only. 2. Do not require any configuration to make this adapter work. FTP Adapter 1. It is used to deal with remote systems. 2. Outbound Connection Pool needs to be configured with FTP details to make this adapter work. 4)  File & FTP adapters are known and Transactional or Non-Transactional adapters?.  These adapters are known as non-transactional adapters as these adapters does not support transactions. 5)  Can we read flat files using these adapter...
Read more

What is boot.properties file and how to create

By -
Boot.properties is a file, it containing  weblogic server username and password . If your server is in production mode then only you have to create manually this boot.properties file. If your server is in Development then you no need to create this file because server it self create this file while creating Domain. A boot identity file contains the user credentials for starting and stopping an instance of WebLogic Server. An administration server or managed server can refer to this file for user credentials instead of prompting at the command line to provide them. To Create boot.properties: Go to below location Win :   C:\Oracle\Middleware\user_projects\domains\test_domain\servers\AdminServer\ Linux : Oracle\Middleware\user_projects\domains\test_domain\servers\AdminServer\ 1.First you have to create security folder under AdminServer 2.Create boot.properties file under security folder. 3.Open notepad and write the below two lines username=********** password=*****...
Read more

SSL Exceptions in Admin Server and Node Manager.

By -
javax.net.ssl.SSLKeyException: [Security:090482]BAD_CERTIFICATE alert was received from oracle.test.com – xx.xxx.xx.xx. Check the peer to determine why it rejected the certificate chain (trusted CA configuration, hostname verification). SSL debug tracing may be required to determine the exact reason the certificate was rejected. <WARNING> <Uncaught exception in server handlerjavax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake>javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:849) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1170) The above exceptions are  the most common exceptions encountered during the setup of Weblogic Server in an environment. The stack does suggest what could be the reasons but the diagnostics are not mentioned. To debug this issue, first we need...
Read more