Srikant Venkata

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Recent posts by Srikant Venkata

Hi All,
I want to connect to my Android Database using ORMLite. Basically, I have created a DAO and trying to Insert user object in RegisterActivity.java class.
But, I receive the below exception, I am quite new to DAO, Kindly suggest If the below approach is right.

FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: com.divi.apps.db.DBHelper
at com.divi.apps.activities.RegisterActivity.insertUser(RegisterActivity.java 55)



DBHelper.java



In my RegisterActivity.java, I call the create method of the DAO




I have created a DBHelper initializing the DBName and Version.
I have also create a Dao based on the tutorials from ORMLite (http://ormlite.com/javadoc/ormlite-core/doc-files/ormlite_1.html#SEC1)
Also, I dont see the database folder in the File Explorer view under DDMS perspective.

The DB code used to connect to the Database is picked up from the tutorials.

Please let me know if there is a better way of doing this DB connect and Records Insertion.

-Regards
Srikant Mantha
8 years ago
The issue is like this:
This issue is intermittently seen only on our Production environment.
We see that when a user searches for data in a page, the process is taking longer time to load the data, and then an error page is seen exactly after a duration of 5 minutes.
I tried to trace the exception in the weblogic logs and found the below stack trace.

<[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1331182902049> <BEA-000000> <Mar 8, 2012 5:01:42 AM com.sun.faces.lifecycle.Phase doPhase
SEVERE: JSF1054: (Phase ID: RENDER_RESPONSE 6, View ID: /jsf/common/error.jsp) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@36baff9a]>
<[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1331182902049> <BEA-101017> <[ServletContext@456408623] Root cause of ServletException.
javax.el.ELException: java.lang.NullPointerException
at javax.el.BeanELResolver.getValue(BeanELResolver.java:266)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
at com.sun.el.parser.AstValue.getValue(AstValue.java:118)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
at weblogic.servlet.jsp.ELHelper.evaluate(ELHelper.java:32)
at jsp_servlet._jsf._common.__error._jspService(__error.java:306)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:499)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:248)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:410)
at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:473)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:141)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:109)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.bde.config.RequestParamFilter.doFilter(RequestParamFilter.java:118)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.bde.config.URLFilter.doFilter(URLFilter.java:72)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.websat.timber.transaction.TransactionLoggingFilter.doFilter(TransactionLoggingFilter.java:132)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3592)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused By: java.lang.NullPointerException
at com.hp.bde.beans.common.LoggedInUserBean.isShowMenuHeader(LoggedInUserBean.java:708)
at sun.reflect.GeneratedMethodAccessor423.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
at com.sun.el.parser.AstValue.getValue(AstValue.java:118)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
at weblogic.servlet.jsp.ELHelper.evaluate(ELHelper.java:32)
at jsp_servlet._jsf._common.__error._jspService(__error.java:306)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:499)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:248)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:410)
at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:473)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:141)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:109)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.bde.config.RequestParamFilter.doFilter(RequestParamFilter.java:118)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.bde.config.URLFilter.doFilter(URLFilter.java:72)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.hp.websat.timber.transaction.TransactionLoggingFilter.doFilter(TransactionLoggingFilter.java:132)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3592)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>

And after 10 mins, A stuck Thread Exception is seen as shown below

<[ACTIVE] ExecuteThread: '7' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1330061635117>
<BEA-000337> <[STUCK] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "1,038" seconds working on the request "weblogic.servlet.internal.ServletRequestImpl@59688dc8

]", which is more than the configured time (StuckThreadMaxTime) of "1,000" seconds. Stack trace:
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:134)
oracle.net.ns.Packet.receive(Packet.java:293)
oracle.net.ns.DataPacket.receive(DataPacket.java:92)
oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:174)
oracle.net.ns.NetInputStream.read(NetInputStream.java:119)
oracle.net.ns.NetInputStream.read(NetInputStream.java:94)
oracle.net.ns.NetInputStream.read(NetInputStream.java:79)
oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:122)
oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:78)
oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1040)
oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1016)
oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:589)
oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:191)
oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:950)
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1223)
oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3386)
oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3487)
oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:3858)
oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1374)
weblogic.jdbc.wrapper.PreparedStatement.execute(PreparedStatement.java:98)
com.ibatis.sqlmap.engine.execution.SqlExecutor.executeQueryProcedure(SqlExecutor.java:279)
com.ibatis.sqlmap.engine.mapping.statement.ProcedureStatement.sqlExecuteQuery(ProcedureStatement.java:34)
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:173)
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:123)
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:615)
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:589)
com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForList(SqlMapSessionImpl.java:118)
org.springframework.orm.ibatis.SqlMapClientTemplate$3.doInSqlMapClient(SqlMapClientTemplate.java:298)
org.springframework.orm.ibatis.SqlMapClientTemplate.execute(SqlMapClientTemplate.java:209)
org.springframework.orm.ibatis.SqlMapClientTemplate.executeWithListResult(SqlMapClientTemplate.java:249)
org.springframework.orm.ibatis.SqlMapClientTemplate.queryForList(SqlMapClientTemplate.java:296)
com.hp.bde.dao.BDEDAOImpl.getListOfRecords(BDEDAOImpl.java:43)
com.hp.bde.bo.documents.DocumentBaseBO.getOrderListCountAndTotal(DocumentBaseBO.java:291)
com.hp.bde.bo.documents.DocumentListBO.getDocumentListVO(DocumentListBO.java:106)
com.hp.bde.bo.documents.DocumentListBO$$FastClassByCGLIB$$8e91aa99.invoke(<generated>)
net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:696)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:126)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
com.hp.bde.config.LogInterceptor.invoke(LogInterceptor.java:39)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:631)
com.hp.bde.bo.documents.DocumentListBO$$EnhancerByCGLIB$$ccdd1c32.getDocumentListVO(<generated>)
com.hp.bde.beans.documents.DocumentList.search(DocumentList.java:430)
com.hp.bde.beans.documents.DocumentList.searchall(DocumentList.java:170)
sun.reflect.GeneratedMethodAccessor2402.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.sun.el.parser.AstValue.invoke(AstValue.java:157)
com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
javax.faces.component.UICommand.broadcast(UICommand.java:387)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:349)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
com.hp.bde.config.RequestParamFilter.doFilter(RequestParamFilter.java:118)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
com.hp.bde.config.URLFilter.doFilter(URLFilter.java:72)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
com.hp.websat.timber.transaction.TransactionLoggingFilter.doFilter(TransactionLoggingFilter.java:132)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3592)
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2202)
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2108)
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1432)
weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>

-Regards
Srikant
8 years ago
Hi All,
Need a voucher for SCJP 6 certification exam. If anybody is ready to sell his/her voucher, please call me @ +91-9986510783 or mail me on mantha.srikant@gmail.com.

-Thanks
Srikant
8 years ago
Hi All,
I am working in a middleware application where we are using weblogic 10.3.2.
I am getting an unexpected error while navigating through the application
or while doing any documental search operation.
The control is going to error page after 5 mins of search operation, which is very rarely happening.
We had recently changed the StuckThreadMaxTime parameter from the 600sec to 1000sec,
but still facing the same problem and the pattern is really not found.

Since I am new with Weblogic, I need some inputs in identifying the issue.

-Thanks & Regards
Srikant
8 years ago
Thanks, It works now when I added the jar file in Tomcat Server Libs. Earlier I had added only to the Application's Build path.

-Regards
Srikant Mantha
8 years ago
Hi All,
I am trying to configure the Datasource in Tomcat 6.0 using a context.xml file.
I am using Oracle 10g as Database.
I have placed the below changes inside /META-INF/context.xml

<Context>
<Resource auth="Container" name="jdbc/loginApp" type="javax.sql.DataSource"
description="Login Application" driverClassName="oracle.jdbc.OracleDriver"
maxActive="100" maxIdle="10" maxWait="10000" password="l0g1napp"
url="jdbc:oracle:thin:@localhost:1521:xe" username="loginapp" />
</Context>

In My application, I am trying to do lookup using the below code for lookup name as "loginApp".


Context initContext = new InitialContext();
Context envContext = (Context) initContext.lookup("java:/comp/env");
DataSource ds = (DataSource) envContext.lookup("jdbc/" + streamName);

But, When I run the application, I get the below error

java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1645)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
at com.myapp.Utilities.Datastreams.getConnection(Datastreams.java:16)
at com.myapp.Controller.LoginController.ValidateLogin(LoginController.java:68)
at com.myapp.Controller.LoginController.doPost(LoginController.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

What more configurations should I follow such that my application picks up the context.xml. Should I add any reference to context.xml in my Web.xml?

-Regards
Srikant Mantha
8 years ago
Wow!!! Thanks Nomaan, It just works grt.
Thanks all for the quick response.

What's the best approach to achieve this?
Can you provide me an example

So, Do I need to write 3 different run() methods with separate call or Can I achieve in a single run() method ?

-Regards
Srikant
Hi All,
I have 3 different threads (t1,t2,t3) accessing 3 methods method1(), method2() and method3() .

All, I need to know that
1. Is this achievable in a Multithreaded environment?
2. What if the methods are synchronized or non-synchronized?
3. Can I achieve this using ThreadPools?
The page had more than 2000 lines of code, due to which the Banner was not getting loaded.
The Page directive attribute <%@page buffer="2kb"%>, helped to display the included banner.

Thanks to all for the suggestion and thoughts

-Regards
Srikant
9 years ago
JSP
We use only IE 8, Hence the issue is restricted to IE 8.
Technology wise, we use Java, Oracle, Servlets, JSP, Html, Javascripts and CSS.
9 years ago
JSP
Well, Adding more explanation. There are 6 tabbed panes, The banner gets displayed on all the first 3 tabbed panes, but when I click on the 4th tabbed pane. I dnt see the banner. The path provided for the included JSP is absolutely correct and works fine with other 3 tabbed panes.
9 years ago
JSP
Hi Folks,
I have an issue with JSP Include in an application which was coded some 7-8 years back where even javascript and html tags are embedded inside an out.println() syntax.

I am trying to include a banner using this syntax <jsp:include page="Banner.jsp"/> before the place where my <html> tag starts. But unfortunately, this banner doesn't gets picked up.

Whats the best way to make this inclusion of banner work?

-Regards
Srikant Mantha
9 years ago
JSP
Hi All,
Thank you very much for the information. I have decided to take up JAVA SE 6 certification.
Anybody who is ready to sell the JAVA SE 6 voucher, please let me know. I would be interested to take it up.

-Srikant