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  1. #1
    Join Date
    Jun 2009
    Posts
    46

    Unanswered: Error when connecting App from Oracle database

    Hi

    I deployee the application into the server and when i am trying to connect the application from Oracle database it is showing me following error.
    I am able to connect the database directly with entering UserID/Password.
    but when i am trying to coonect the database from application it is throughing me following error:

    Command {System.Data.OracleClient.OracleCommand}System.Dat a.OracleClient.OracleCommand

    ex{"ORA-12154: TNS:could not resolve the connect identifier specified"}System.Exception

    val:Nothing System.Data.OracleClient.OracleDataReader

    Any help will appriciate

    Regards
    Prasad

  2. #2
    Join Date
    Aug 2003
    Location
    Where the Surf Meets the Turf @Del Mar, CA
    Posts
    7,776
    Provided Answers: 1
    Post Operating System (OS) name & version for DB server system.
    Post results of
    SELECT * from v$version

    Code:
    SQL> !oerr ora 12154
    12154, 00000, "TNS:could not resolve the connect identifier specified"
    // *Cause:  A connection to a database or other service was requested using
    // a connect identifier, and the connect identifier specified could not
    // be resolved into a connect descriptor using one of the naming methods
    // configured. For example, if the type of connect identifier used was a
    // net service name then the net service name could not be found in a 
    // naming method repository, or the repository could not be
    // located or reached.
    // *Action:
    //   - If you are using local naming (TNSNAMES.ORA file):
    //      - Make sure that "TNSNAMES" is listed as one of the values of the
    //        NAMES.DIRECTORY_PATH parameter in the Oracle Net profile
    //        (SQLNET.ORA)
    //      - Verify that a TNSNAMES.ORA file exists and is in the proper
    //        directory and is accessible.
    //      - Check that the net service name used as the connect identifier
    //        exists in the TNSNAMES.ORA file.
    //      - Make sure there are no syntax errors anywhere in the TNSNAMES.ORA
    //        file.  Look for unmatched parentheses or stray characters. Errors
    //        in a TNSNAMES.ORA file may make it unusable.
    //   - If you are using directory naming:
    //      - Verify that "LDAP" is listed as one of the values of the
    //        NAMES.DIRETORY_PATH parameter in the Oracle Net profile
    //        (SQLNET.ORA).
    //      - Verify that the LDAP directory server is up and that it is
    //        accessible.
    //      - Verify that the net service name or database name used as the
    //        connect identifier is configured in the directory.
    //      - Verify that the default context being used is correct by
    //        specifying a fully qualified net service name or a full LDAP DN
    //        as the connect identifier
    //   - If you are using easy connect naming:
    //      - Verify that "EZCONNECT" is listed as one of the values of the
    //        NAMES.DIRETORY_PATH parameter in the Oracle Net profile
    //        (SQLNET.ORA).
    //      - Make sure the host, port and service name specified
    //        are correct.
    //      - Try enclosing the connect identifier in quote marks.
    // 
    //   See the Oracle Net Services Administrators Guide or the Oracle
    //   operating system specific guide for more information on naming.
    post actual code/connect string that is generating this error
    post OS name & version for system from where application is running.
    2 or 3 tier application.
    Is this application written in Java?
    Last edited by anacedent; 04-17-10 at 10:59.
    You can lead some folks to knowledge, but you can not make them think.
    The average person thinks he's above average!
    For most folks, they don't know, what they don't know.
    Good judgement comes from experience. Experience comes from bad judgement.

  3. #3
    Join Date
    Oct 2010
    Posts
    1
    I had the same problem! nothing seems to work.
    Anybody?

  4. #4
    Join Date
    Aug 2003
    Location
    Where the Surf Meets the Turf @Del Mar, CA
    Posts
    7,776
    Provided Answers: 1
    I don't know what you have.
    I don't know what you do.
    I don't know what you see.
    It is really, Really, REALLY difficult to fix a problem that can not be seen.
    use COPY & PASTE so we can see what you do & how Oracle responds.

    include OS name & version & Oracle version to 4 decimal places; like V11.2.0.1.0
    You can lead some folks to knowledge, but you can not make them think.
    The average person thinks he's above average!
    For most folks, they don't know, what they don't know.
    Good judgement comes from experience. Experience comes from bad judgement.

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