Ora-12638
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  1. #1
    Join Date
    May 2001
    Location
    Boston
    Posts
    24

    Ora-12638

    Hi,

    I am using a db link to connect to a different database.

    My problem is when I try to query an object database b using
    select column from objectname@dblinkname

    I get this error ORA-12638 Credential Retrieval failed.

    But I am able to query connecting the session seperately.

    So, only when using the dblink i get the above error.

    Can anybody help me in this regard.

    I checked TNSNAMES.ORA also i tried changing the SQLNET.ORA authentication parameter from NTS to NONE.It doesn't work.

    Thanks.

    --RaviSHankar.

  2. #2
    Join Date
    Feb 2001
    Posts
    203
    Hi Ravishanker,

    Insteard of changing "NONE", Comment SQLNET.AUTHENTICATION_SERVICE parameter in sqlnet.ora file and try it.

    This parameter is only used if you are running NTS. If you are not running NTS authentication on your client, this parameter is not needed.

    Sree.
    sree

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