Oracle.ManagedDataAccess - ora-12537

Question

Hi,
I have problems with .net 4.0 WPF application. Everything working ok on developer machine and on tests virtual machines. I have just problem on one laptop. I tried different approaches but nothing helping.
I'm using connection string like:
string conn = ser Id=secret_user;Password=secret_password;Data Source=" +
"(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.7.46)" +
"(PORT=1523))(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME=HDPROD)))";
or publishing app with tnsnames.ora and sqlnet.ora files and using connections strings like:
string conn = "User Id=secret_user;Password=secret_password;Data Source=HDPROD"
And everything is ok on my developer pc, test virtual machines, but im keep getting error: ora-12537 on one of laptops.
Any ways to fix it?
Regards,
Bart.

Answer 1

I added following settings in app.config file
  <configSections>
    <section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess" />
  </configSections>
  <oracle.manageddataaccess.client>
    <version number="*">
      <settings>
        <setting name="SQLNET.AUTHENTICATION_SERVICES" value="all"/>
        <setting name="NAMES.DIRECTORY_PATH" value="ezconnect"/>
      </settings>
    </version>
  </oracle.manageddataaccess.client>
Still failed, sometimes it throws "ORA-12537: Network Session: End of file", sometimes throws "ORA-03135: Connection lost contact".
As ORA-12537 after change to Oracle.ManagedDataAcess.dll mentioned, it works without any problem with the unmanaged library.Please advice, thx.