HTTP Status 500 - org.hibernate.exception.GenericJDBCException: Cannot open connection

type Exception report

message org.hibernate.exception.GenericJDBCException: Cannot open connection

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: org.hibernate.exception.GenericJDBCException: Cannot open connection
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:555)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

root cause

org.hibernate.exception.GenericJDBCException: Cannot open connection
	org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
	org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
	org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
	org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
	org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
	org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
	org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577)
	org.hibernate.loader.Loader.doQuery(Loader.java:696)
	org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
	org.hibernate.loader.Loader.doList(Loader.java:2232)
	org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
	org.hibernate.loader.Loader.list(Loader.java:2124)
	org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
	org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
	org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
	org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149)
	org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
	com.srsoft.base.BaseBiz.pages(BaseBiz.java:171)
	org.apache.jsp.teacher.index_jsp._jspService(index_jsp.java:125)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

root cause

java.sql.SQLException: Connections could not be acquired from the underlying database!
	com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:352)
	com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120)
	org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
	org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
	org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
	org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577)
	org.hibernate.loader.Loader.doQuery(Loader.java:696)
	org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
	org.hibernate.loader.Loader.doList(Loader.java:2232)
	org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
	org.hibernate.loader.Loader.list(Loader.java:2124)
	org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
	org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
	org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
	org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149)
	org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
	com.srsoft.base.BaseBiz.pages(BaseBiz.java:171)
	org.apache.jsp.teacher.index_jsp._jspService(index_jsp.java:125)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

root cause

com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
	com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1002)
	com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:293)
	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:348)
	com.mchange.v2.c3p0.PoolBackedDataSource.getConnection(PoolBackedDataSource.java:120)
	org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:78)
	org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
	org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
	org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
	org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577)
	org.hibernate.loader.Loader.doQuery(Loader.java:696)
	org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
	org.hibernate.loader.Loader.doList(Loader.java:2232)
	org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
	org.hibernate.loader.Loader.list(Loader.java:2124)
	org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
	org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
	org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
	org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149)
	org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
	com.srsoft.base.BaseBiz.pages(BaseBiz.java:171)
	org.apache.jsp.teacher.index_jsp._jspService(index_jsp.java:125)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:36)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.23 logs.


Apache Tomcat/8.0.23