How to solve java.sql.SQLNonTransientConnectionException: Could not read resultset: Connection reset?

How to solve java.sql.SQLNonTransientConnectionException: Could not read resultset: Connection reset?

MariaDB server closing client connections unexpectedly ?

how to drop MySQL's autoReconnect=true from Confluence ?

Exceptions are blow --

java.sql.SQLNonTransientConnectionException: Could not read resultset: Connection reset
        at org.mariadb.jdbc.internal.SQLExceptionMapper.get(SQLExceptionMapper.java:136)
        at org.mariadb.jdbc.internal.SQLExceptionMapper.throwException(SQLExceptionMapper.java:106)
        at org.mariadb.jdbc.MySQLStatement.executeQueryEpilog(MySQLStatement.java:264)
        at org.mariadb.jdbc.MySQLStatement.execute(MySQLStatement.java:288)
        at org.mariadb.jdbc.MySQLStatement.executeQuery(MySQLStatement.java:302)
        at org.mariadb.jdbc.MySQLStatement.executeQuery(MySQLStatement.java:361)
        at org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
        at org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
        at com.vimba.database.DBFactory.attemptLoginWithTempPasswordDetails(DBFactory.java:181)
        at com.vimba.database.DBFactory.authenticate(DBFactory.java:131)
        at com.vimba.service.ExposedFunctions.login(ExposedFunctions.java:88)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:210)
        at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:132)
        at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:241)
        at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:74)
        at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:559)
        at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:518)
        at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:503)
        at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:400)
        at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:226)
        at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:375)
        at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:175)
        at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:134)
        at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:159)
        at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:49)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.mariadb.jdbc.internal.common.QueryException: Could not read resultset: Connection reset
        at org.mariadb.jdbc.internal.mysql.MySQLProtocol.getResult(MySQLProtocol.java:926)
        at org.mariadb.jdbc.internal.mysql.MySQLProtocol.executeQuery(MySQLProtocol.java:991)
        at org.mariadb.jdbc.MySQLStatement.execute(MySQLStatement.java:281)
        ... 40 more
Caused by: java.net.SocketException: Connection reset


Solution is :-

ValidationQuery
Setting the validationQuery attribute to valid query for MySQL (e.g. "SELECT 1") prevents connection problems when using a data source in Tomcat (version tested is Tomcat 6.0.26 as used in Confluence 3.4 standalone) which is using DBCP.
autoReconnect is not required for this configuration.
                   
                        username="USER"
                        password="PASSWORD"
                        driverClassName="com.mysql.jdbc.Driver"
                        url="jdbc:mysql://localhost:3306/confluence?useUnicode=true&characterEncoding=utf8"
                        maxActive="15"
                        maxIdle="7"
                        validationQuery="Select 1" />

Note: Setting the validationQuery option on the database connection pool will have a performance impact as DBCP will use this query to validate connections before returning them to the caller.

Using autoReconnect without using the validationQuery does not prevent {{com.mysql.jdbc.exceptions.jdbc4.CommunicationsException}}s!


Or

you can use sessionVariables in the client's JDBC URL like so:
jdbc:mysql://hostname:3306/schema?sessionVariables=wait_timeout=600

u can try autoreconect also
jdbc:mysql://hostname:3306/schema?sessionVariables=wait_timeout=600&autoReconnect=true

Or

mysql://db_user:db_user@localhost/mydb?autoReconnect=true&useUnicode=yes