Problems connecting to Oracle 11g R1 RAC

Question

Hi everybody
In my factory we hava a web aplication called Matrix one that is connected to an oracle database 11g. This aplication uses Weblogic 9.2.3 to load the web pages. Until now we had an oracle running in one server, but now we have put an oracle rac system. The application works fine with this new situatin, but there ar parts of the system that don´t work. We have made our own applicatons that use thin jdbc driver to connect to database, but now when we connected to the rac sometimes the connection is established well but most of times the conecction failed. The error that weblogic returns is "connection refused".
I´ve modified the startweblogic.cmd to use the las jdbc driver but the result is the same. My connection is the folloowing:
Connection conn = null;
String cadenaConexion = "";
try{
OracleDataSource ods = new OracleDataSource();
ods.setUser(user);
ods.setPassword(Pass);
cadenaConexion = "jdbc:oracle:thin:@(DESCRIPTION=";
cadenaConexion = cadenaConexion + "(ADDRESS=(PROTOCOL=TCP)(HOST=" + Server1 +")(PORT=1521))";
cadenaConexion = cadenaConexion + "(ADDRESS=(PROTOCOL=TCP)(HOST=" + Server2 +")(PORT=1521))";
cadenaConexion = cadenaConexion + "(LOAD_BALANCE=on)";
cadenaConexion = cadenaConexion + "(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME="+Service_Name+")";
cadenaConexion = cadenaConexion + "(FAILOVER_MODE=(TYPE=Select)(METHOD=basic)(RETRIES=180)(DELAY=5))))";
ods.setURL(cadenaConexion);
return con;
}catch (Exception e){
e.printStackTrace();
return (null);
This is my startWeblogic.cmd:
@ECHO OFF
@REM WARNING: This file is created by the Configuration Wizard.
@REM Any changes to this script may be lost when adding extensions to this configuration.
SETLOCAL
@REM --- Start Functions ---
GOTO :ENDFUNCTIONS
:stopAll
     @REM We separate the stop commands into a function so we are able to use the trap command in Unix (calling a function) to stop these services
     if NOT "X%ALREADY_STOPPED%"=="X" (
          GOTO :EOF
     @REM STOP POINTBASE (only if we started it)
     if "%POINTBASE_FLAG%"=="true" (
          echo Stopping PointBase server...
          call "%WL_HOME%\common\bin\stopPointBase.cmd" -port=%POINTBASE_PORT% -name=%POINTBASE_DBNAME% >"%DOMAIN_HOME%\pointbaseShutdown.log" 2>&1
          echo PointBase server stopped.
     set ALREADY_STOPPED=true
     @REM Restore IP configuration the node manager starts IP Migration
     if NOT "%SERVER_IP%"=="" (
          call "%WL_HOME%\common\bin\wlsifconfig.cmd" -removeif "%IFNAME%" "%SERVER_IP%"
GOTO :EOF
:ENDFUNCTIONS
@REM --- End Functions ---
@REM *************************************************************************
@REM This script is used to start WebLogic Server for this domain.
@REM
@REM To create your own start script for your domain, you can initialize the
@REM environment by calling @USERDOMAINHOME\setDomainEnv.
@REM
@REM setDomainEnv initializes or calls commEnv to initialize the following variables:
@REM
@REM BEA_HOME - The BEA home directory of your WebLogic installation.
@REM JAVA_HOME - Location of the version of Java used to start WebLogic
@REM Server.
@REM JAVA_VENDOR - Vendor of the JVM (i.e. BEA, HP, IBM, Sun, etc.)
@REM PATH - JDK and WebLogic directories are added to system path.
@REM WEBLOGIC_CLASSPATH
@REM - Classpath needed to start WebLogic Server.
@REM PATCH_CLASSPATH - Classpath used for patches
@REM PATCH_LIBPATH - Library path used for patches
@REM PATCH_PATH - Path used for patches
@REM WEBLOGIC_EXTENSION_DIRS - Extension dirs for WebLogic classpath patch
@REM JAVA_VM - The java arg specifying the VM to run. (i.e.
@REM - server, -hotspot, etc.)
@REM USER_MEM_ARGS - The variable to override the standard memory arguments
@REM passed to java.
@REM PRODUCTION_MODE - The variable that determines whether Weblogic Server is started in production mode.
@REM POINTBASE_HOME - Point Base home directory.
@REM POINTBASE_CLASSPATH
@REM - Classpath needed to start PointBase.
@REM
@REM Other variables used in this script include:
@REM SERVER_NAME - Name of the weblogic server.
@REM JAVA_OPTIONS - Java command-line options for running the server. (These
@REM will be tagged on to the end of the JAVA_VM and
@REM MEM_ARGS)
@REM
@REM For additional information, refer to the WebLogic Server Administration
@REM Console Online Help(http://e-docs.bea.com/wls/docs92/ConsoleHelp/startstop.html).
@REM *************************************************************************
@REM Call setDomainEnv here.
set DOMAIN_HOME=C:\bea923\user_projects\domains\mydomain
for %%i in ("%DOMAIN_HOME%") do set DOMAIN_HOME=%%~fsi
call "%DOMAIN_HOME%\bin\setDomainEnv.cmd" %*
set SAVE_JAVA_OPTIONS=%JAVA_OPTIONS%
set SAVE_CLASSPATH=%CLASSPATH%
@REM Start PointBase
set PB_DEBUG_LEVEL=0
if "%POINTBASE_FLAG%"=="true" (
     call "%WL_HOME%\common\bin\startPointBase.cmd" -port=%POINTBASE_PORT% -debug=%PB_DEBUG_LEVEL% -console=false -background=true -ini=%DOMAIN_HOME%\pointbase.ini >"%DOMAIN_HOME%\pointbase.log" 2>&1
set JAVA_OPTIONS=%SAVE_JAVA_OPTIONS%
set SAVE_JAVA_OPTIONS=
set CLASSPATH=%SAVE_CLASSPATH%
set SAVE_CLASSPATH=
if "%PRODUCTION_MODE%"=="true" (
     set WLS_DISPLAY_MODE=Production
) else (
     set WLS_DISPLAY_MODE=Development
if NOT "%WLS_USER%"=="" (
     set JAVA_OPTIONS=%JAVA_OPTIONS% -Dweblogic.management.username=%WLS_USER%
if NOT "%WLS_PW%"=="" (
     set JAVA_OPTIONS=%JAVA_OPTIONS% -Dweblogic.management.password=%WLS_PW%
Set ORACLE_HOME=C:\Oracle\product\11.1.0\db_1
set CLASSPATH=%ORACLE_HOME%\jlib\jndi.jar;%ORACLE_HOME%\jlib\jta.jar;%ORACLE_HOME%\jdbc\lib\ojdbc5.jar;%ORACLE_HOME%\jdbc\lib\orai18n.jar;%ORACLE_HOME%\jlib\providerutil.jar;%ORACLE_HOME%\jlib\fscontext.jar;%CLASSPATH%;%MEDREC_WEBLOGIC_CLASSPATH%
echo .
echo .
echo JAVA Memory arguments: %MEM_ARGS%
echo .
echo WLS Start Mode=%WLS_DISPLAY_MODE%
echo .
echo CLASSPATH=%CLASSPATH%
echo .
@REM Call WebLogic Server
set path=%PATH%
echo PATH=%PATH%
echo .
echo ***************************************************
echo * To start WebLogic Server, use a username and *
echo * password assigned to an admin-level user. For *
echo * server administration, use the WebLogic Server *
echo * console at http:\\hostname:port\console *
echo ***************************************************
@REM Set up IP Migration related variables.
@REM Set interface name.
if NOT "%Interface%"=="" (
     set IFNAME=%Interface%
) else (
     set IFNAME=
@REM Set IP Mask.
if NOT "%NetMask%"=="" (
     set IPMASK=%NetMask%
) else (
     set IPMASK=
@REM Perform IP Migration if SERVER_IP is set by node manager.
if NOT "%SERVER_IP%"=="" (
     call "%WL_HOME%\common\bin\wlsifconfig.cmd" -addif "%IFNAME%" "%SERVER_IP%" "%IPMASK%"
@REM START WEBLOGIC
echo starting weblogic with Java version:
%JAVA_HOME%\bin\java %JAVA_VM% -version
if "%WLS_REDIRECT_LOG%"=="" (
     echo Starting WLS with line:
     echo %JAVA_HOME%\bin\java %JAVA_VM% %MEM_ARGS% %JAVA_OPTIONS% -Dweblogic.Name=%SERVER_NAME% -Djava.security.policy=%WL_HOME%\server\lib\weblogic.policy %PROXY_SETTINGS% %SERVER_CLASS%
     %JAVA_HOME%\bin\java %JAVA_VM% %MEM_ARGS% %JAVA_OPTIONS% -Dweblogic.Name=%SERVER_NAME% -Djava.security.policy=%WL_HOME%\server\lib\weblogic.policy %PROXY_SETTINGS% %SERVER_CLASS%
) else (
     echo Redirecting output from WLS window to %WLS_REDIRECT_LOG%
     %JAVA_HOME%\bin\java %JAVA_VM% %MEM_ARGS% %JAVA_OPTIONS% -Dweblogic.Name=%SERVER_NAME% -Djava.security.policy=%WL_HOME%\server\lib\weblogic.policy %PROXY_SETTINGS% %SERVER_CLASS% >"%WLS_REDIRECT_LOG%" 2>&1
CALL :stopAll
popd
@REM Exit this script only if we have been told to exit.
if "%doExitFlag%"=="true" (
     exit
ENDLOCAL
I´ve tried to use the Oci driver but then the error is diferent "java.lang.UnsatisfiedLinkError: no ocijdbc9 in java.library.path".
I´ve red a lot of messages in forums but >I haven´t found the solution.
Anybody could help me please?
Thanks in advance
Sorry for my English.

Answer 1

I´ve tried to use the Oci driver but then the error is diferent "java.lang.UnsatisfiedLinkError: no ocijdbc9 in java.library.path".OCI requires a Oracle shared library (nothing to do with java.)
returns is "connection refused".Which suggests a network problem. Given that you have added at least one new box to your network, how it was added would be the problem. Such as if a network infrastructure box is having an intermittent failure.