XMLStreamException: End Document reached prematurely

If you notice below error while launching your integrated weblogic server,  Try to delete the corrupted system-jazn file from the below location and replace with correct one.


C:\Users\user\AppData\Roaming\JDeveloper\system11.1.1.6.38.62.29\DefaultDomain\config\fmwconfig


- Please download this attached system-jazn.xml file - Sample System Jazn XML

or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: Cannot read from policy store. Reason is PolicyStore Error, javax.xml.stream.XMLStreamException: End Document reached prematurely.

at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.loadOPSSPolicy(CommonSecurityServiceManagerDelegateImpl.java:1398)

at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1018)

at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:873)

at weblogic.security.SecurityService.start(SecurityService.java:141)

at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)

Truncated. see log file for complete stacktrace

Caused By: oracle.security.jps.JpsRuntimeException: Cannot read from policy store. Reason is PolicyStore Error, javax.xml.stream.XMLStreamException: End Document reached prematurely.

at oracle.security.jps.internal.policystore.xml.XmlPolicyStore.buildFromFile(XmlPolicyStore.java:496)

at oracle.security.jps.internal.policystore.xml.XmlPolicyStore.<init>(XmlPolicyStore.java:276)

at oracle.security.jps.internal.policystore.xml.XmlPolicyStoreProvider.getInstance(XmlPolicyStoreProvider.java:100)

at oracle.security.jps.internal.policystore.xml.XmlPolicyStoreProvider.getInstance(XmlPolicyStoreProvider.java:74)

at oracle.security.jps.internal.core.runtime.ContextFactoryImpl.findServiceInstance(ContextFactoryImpl.java:139)

Truncated. see log file for complete stacktrace

Caused By: oracle.security.jps.JpsRuntimeException: javax.xml.stream.XMLStreamException: End Document reached prematurely.

at oracle.security.jps.internal.core.datastore.xml.XmlDataStoreParser.getDataStoreEntryStax(XmlDataStoreParser.java:166)

at oracle.security.jps.internal.core.datastore.xml.XmlDataStoreParser.getDataStoreEntry(XmlDataStoreParser.java:180)

at oracle.security.jps.internal.core.datastore.xml.XmlDataStoreParser.getDataStoreEntry(XmlDataStoreParser.java:187)

at oracle.security.jps.internal.core.datastore.xml.XmlDataStore.loadXmlDataStore(XmlDataStore.java:411)

at oracle.security.jps.internal.core.datastore.xml.XmlDataStore.<init>(XmlDataStore.java:276)

Truncated. see log file for complete stacktrace

Caused By: javax.xml.stream.XMLStreamException: End Document reached prematurely.

at oracle.security.jps.internal.policystore.xml.StaxPolicyStoreParser.processPermission(StaxPolicyStoreParser.java:4801)

at oracle.security.jps.internal.policystore.xml.StaxPolicyStoreParser.processGrant(StaxPolicyStoreParser.java:4309)

at oracle.security.jps.internal.policystore.xml.StaxPolicyStoreParser.processJaznPolicy(StaxPolicyStoreParser.java:4253)

at oracle.security.jps.internal.policystore.xml.StaxPolicyStoreParser.processJaznPolicy(StaxPolicyStoreParser.java:4229)

at oracle.security.jps.internal.policystore.xml.StaxPolicyStoreParser.processAppPolicy(StaxPolicyStoreParser.java:867)

Truncated. see log file for complete stacktrace

> 

<May 29, 2014 11:28:48 AM CDT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED> 

<May 29, 2014 11:28:48 AM CDT> <Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down> 

<May 29, 2014 11:28:48 AM CDT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN> 

Oracle Webcenter Performance Tuning Tips

- Ensure Oracle Coherence is properly configured and working properly

Oracle Coherence Cache - Ensure coherence is enabled, this will reduce significantly performance impact. First time query to UCM get the content and stores in in-memory coherence cache, subsequent calls to UCM will be fetched from coherence cache rather than calling UCM

ADF Client State Token - This value controls the number of pages user can navigate to back without loosing the page state. To reduce the  CPU and memory usage decrease this value in web.xml

<context-param>
       <param-name>
          org.apache.myfaces.trinidad.CLIENT_STATE_MAX_TOKENS
       </param-name>
       <param-value>
          3
       </param-value>
</context-param>

JSP Page Time out - This value determines, how long JSP should stay in memory. This frees up resources in situations where some pages are called infrequently. Configure this value in web.xml

<servlet>
         <servlet-name>
            oraclejsp
        <init-param>
            <param-name>
               jsp_timeout
            </param-name>
            <param-value>
               600
            </param-value>
       </init-param>

HTTP Session Timeout :  This determines how long you want to keep the HTTPSession object alive, This value can be configured in web.xml. Higher the value lead to consume more CPU and memory. Configure this value based on nature of the user accessing your application. If users stays on the application for lesser amount of time, then reduce the value.

<session-timeout> 15 </session-timeout>

ADF View State Compression : By setting 'false' to this ,all non-current view states are compressed before saving in memory, which reduces the heap usage. This value can be configured in web.xml

<context-param>
       <param-name> org.apache.myfaces.trinidad.COMPRESS_VIEW_STATE
      </param-name>
       <param-value> false </param-value>

</context-param>

MDS Cache Size :  By default, MDS cache size is 100 MB, if you notice any error in logs such as JOC region is full, then increase this value to maximum in adf-config.xml

<cache-config> 
<max-size-kb>150000</max-size-kb> 
</cache-config>

MDS Purge Rate : This value will determine to remove older versions meta data automatically every hour. By default, this value is -1, that means no purge. Set the appropriate value based on nature of the application. This can be done by configuring adf-config.xml

<auto-purge seconds-to-live="3600"/>.

Optimizing Cache invalidation

Set Cache Invalidation Interval(Minutes) value to '0' , This can be done by editing Content Repository connection using Enterprise Manager

Follow below link to edit 'Content Repository Connection using EM' : http://fortunefusionminds.blogspot.com/2014/06/how-to-manage-content-repository.html

Set 'expiry-delay' to zero in 'content-coherence-cache-config.xml'

<local-scheme>
   <scheme-name>ContentNodeCaches</scheme-name>
   <expiry-delay>0</expiry-delay>
   <high-units>800</high-units>
</local-scheme>

- Ensure to have below entry in 'httpd.conf' file in OHS 

    LoadModule deflate_module "${ORACLE_HOME}/ohs/modules/mod_deflate.so"

- Reduce the image file size as much as possible. This will significantly improve the performance.

- Define linkCaching.properties file and have below two entries in it

   oracle.webcenter.content.integration.spi.ucm.linkConversion=false
   oracle.webcenter.content.integration.spi.ucm.suppressGetFileUrl=on

    - Edit the setDomainEnv.sh (both mserver & aserver) and append below entry at the end of this file

              CLASSPATH="${CLASSPATH}${CLASSPATHSEP}${DOMAIN_HOME}"

Ref : Oracle Webcenter Portal Performance Tuning Tips

http://docs.oracle.com/cd/E27559_01/doc.1112/e28552/webcenter.htm

http://www.ateam-oracle.com/webcenter-11-1-1-8-performance-analysis-feature/

http://docs.oracle.com/cd/E28280_01/webcenter.1111/e12405/wcadm_performance.htm#WCADM12056

http://www.oracle.com/technetwork/articles/enterprise2/zheng-webcenter-perf-1-1927402.html

How to install JMeter

What is JMeter ?

JMeter is not a browser. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers.

Download Lin k : http://jmeter.apache.org/download_jmeter.cgi

- Download .zip file, copy to your Windows machine C directory and extract it.
- Open Command prompt, Locate to %PATH% /apache-jmeter-2.11\bin directory
- Run Jmeter.bat command

If you notice any errors related to JDK class path, Create a system environment variable as shown below

- Open new command prompt, and run the JMeter.bat,
- If you notice any heap size related errors then modify jmeter.bat as shown below

set HEAP=-Xms1024m -Xmx1024m

- Upon successful configuration of JDK , you should see JMeter window as shown below

How to see the Trace , Logs and UCM Query response time related information in UCM ?

This blog outlines about how to see logs related information in UCM ?

- Login to Oracle Content Server
- Expand 'Administration' , Choose 'Server Audit Information'

- Choose respective tracing available options from drop down as shown below, Select 'Save' option, Click on 'Update'
Eg : requestaudit, search*, systemdatabase

- Click on 'View Server Output' button as shown below

- This is how you see logs

Thank you for browsing !!!

How to execute UCM Query in Content Manager

This blog explains about how to execute UCM related queries in 'Content Server'

- Login to Webcenter content Server, Expand 'Search' -> 'Standard Search' as shown below
-

- Click on 'show query builder advanced options' as circled below, enter the query and hit search.

How to Monitor Database connections using Oracle EM

This blog explains about monitoring DB connections using Oracle EM


- Login to Oracle EM console corresponding to where your application deployed
- Right click on Cluster/Managed server where your application deployed as shown below, Choose Performance Summary option

- If you want to monitor anything specific , then expand 'Metric Palette' and select whatever you want to monitor. In this example I want to monitor the data source metrics,  I have selected DataSource Metrices and selected whatever needed.

Monitoring Dashboard
- Another way of monitoring application performance is through weblogic console.
- Login to weblogic console, Click on 'Monitoring Dashboard' link as shown below

- This will open the below view, you can select whatever you want to monitor and that will give you the live performance of application.

- Monitor CPU and Memory Usage using Oracle EM

- Monitor Performance Information for Content server using Oracle EM

How to monitor ADF application AM Pool instance and Taskflow Performance using Oracle EM

This blog explains about how to monitor Application Module Instance creation/usage and Taskflow response time using Oracle Enterprise Manager.

- Login to Oracle EM corresponding to where your application deployed
- Expand 'Application Deployments' - > Choose your application - > Right click on your application as shown below

- Choose ADF -> ADF Performance as shown below

- You will see a screen looks like below

Ref : http://docs.oracle.com/cd/E16162_01/admin.1112/e16179/monitor.htm#CHDHAEHB