Hi, Occasionally when the DB is taken down for maintenance my server hangs with jmap similar to below: I am not able to reproduce the same when I try to unplug the DB machine's network cable or any other way I could think ok. Could someone please guide me as to what the problem may be.
I am using 1. commons-dbcp-1.2.1 2. quartz scheduler 3. commons-pool-1.2 4. oracle DB with thin client 5. ojdbc14.jar Thread 19804: (state = BLOCKED) - java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise) - java.lang.Object.wait() @bci=2, line=485 (Interpreted frame) - org.apache.commons.pool.impl.GenericObjectPool.borrowObject() @bci=121, line=748 (Interpreted frame) - org.apache.commons.dbcp.PoolingDataSource.getConnection() @bci=4, line=95 (Interpreted frame) - org.apache.commons.dbcp.BasicDataSource.getConnection() @bci=4, line=540 (Interpreted frame) - org.quartz.utils.PoolingConnectionProvider.getConnection() @bci=4, line=197 (Interpreted frame) - org.quartz.utils.DBConnectionManager.getConnection(java.lang.String) @bci=49, line=112 (Interpreted frame) - com.abcd.jobs.utils.ABCDJobSchedulerUtil.getDBConnection() @bci=6, line=291 (Interpreted frame) - com.abcd.jobs.utils.ABCDJobSchedulerUtil.getJobs(javax.servlet.http.HttpServletRequest) @bci=35, line=306 (Interpreted frame) - org.apache.jsp.jobs_jsp._jspService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) @bci=121, line=110 (Interpreted frame) - org.apache.jasper.runtime.HttpJspBase.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) @bci=3, line=70 (Interpreted frame) - javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=30, line=803 (Interpreted frame) - org.apache.jasper.servlet.JspServletWrapper.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, boolean) @bci=395, line=393 (Interpreted frame) - org.apache.jasper.servlet.JspServlet.serviceJspFile(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String, java.lang.Throwable, boolean) @bci=134, line=320 (Interpreted frame) - org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) @bci=436, line=266 (Interpreted frame) - javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=30, line=803 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=374, line=290 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=101, line=206 (Interpreted frame) - com.abcd.jobs.filters.SessionCheckFilter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain) @bci=179, line=87 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=117, line=235 (Interpreted frame) - org.apache.catalina.core.ApplicationFilterChain.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse) @bci=101, line=206 (Interpreted frame) - org.apache.catalina.core.StandardWrapperValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=804, line=233 (Interpreted frame) - org.apache.catalina.core.StandardContextValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=285, line=175 (Interpreted frame) - org.apache.catalina.core.StandardHostValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=64, line=128 (Interpreted frame) - org.apache.catalina.valves.ErrorReportValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=6, line=102 (Interpreted frame) - org.apache.catalina.core.StandardEngineValve.invoke(org.apache.catalina.connector.Request, org.apache.catalina.connector.Response) @bci=42, line=109 (Interpreted frame) - org.apache.catalina.connector.CoyoteAdapter.service(org.apache.coyote.Request, org.apache.coyote.Response) @bci=157, line=263 (Interpreted frame) - org.apache.coyote.http11.Http11Processor.process(java.net.Socket) @bci=432, line=844 (Interpreted frame) - org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(java.net.Socket) @bci=82, line=584 (Interpreted frame) - org.apache.tomcat.util.net.JIoEndpoint$Worker.run() @bci=41, line=447 (Interpreted frame) - java.lang.Thread.run() @bci=11, line=619 (Interpreted frame) Regards, Arun
