1 Reply Latest reply on Mar 21, 2017 7:17 AM by Anup Dey

    ERROR ConnectionPool.initConnectionCache: Io exception: The Network Adapter could not establish the connection

    Ramya Natarajan Newbie

      hi,

       

      I have a jboss 3.2.7 running for a very old legacy application and recently we had to upgrade the DB to 12c. I have pointed the JDBC to new listener after the server restart i am seeing below exception in the logs. I can successfully  telenet to the DB host without any issues but not sure why its throwing network Adapter error. Can someone please advice?

       

      ERROR ConnectionPool.initConnectionCache: Io exception: The Network Adapter could not establish the connection

       

      ERROR ConnectionPool.initConnectionCache: Io exception: The Network Adapter could not establish the connection

       

      Thanks,

      Ramya

        • 1. Re: ERROR ConnectionPool.initConnectionCache: Io exception: The Network Adapter could not establish the connection
          Anup Dey Apprentice

          Normally the message  indicates either a connectivity failure (e.g. network issues, database is rejecting traffic, etc.) between the machine where JBoss is running and the database server OR a problem with the connection URL.

           

          The exception is raised by the Oracle driver. You may also want to engage your DBA, network administrators and/or contact Oracle Support directly. It is possible that the database server is sometimes rejecting traffic or else that something is sporadically failing in the network.

           

          1#It seems like there is firewall/network issues in your set up.

          2#Check that the database is up and running and accessible from the client machine

          3#The exception could be caused by a protocol error, network error, bug in the driver, back-end RDBMS error, etc.

          4#This is not a JBoss issue, but should be investigated by:

             a. network administrators

             b. back-end server administrators (in this case Oracle admins)

          See [1]

          [1]Oracle Network Adapter could not establish the connection tips