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Thread: Ora-12638

  1. #1
    Join Date
    Oct 2003
    Posts
    1

    Unanswered: Ora-12638

    Hi there...
    Im new in Oracle and I have a problem...
    In my office we have a LAN with automatic IP(ex:10.0.10.x where 0-100 reserved and 100-200 dinamics) and when I want to connect to the BD, the oracle (8i) dont let me in, and if I put a static IP ex:10.0.10.21 dont work.
    And when I put a static IP outside our IP range works!!!!
    I dont now what to do..

    The error is : ORA-12638 fail to obtain credencial

  2. #2
    Join Date
    Nov 2003
    Posts
    1

    Re: Ora-12638

    Originally posted by kostta
    Hi there...
    Im new in Oracle and I have a problem...
    In my office we have a LAN with automatic IP(ex:10.0.10.x where 0-100 reserved and 100-200 dinamics) and when I want to connect to the BD, the oracle (8i) dont let me in, and if I put a static IP ex:10.0.10.21 dont work.
    And when I put a static IP outside our IP range works!!!!
    I dont now what to do..

    The error is : ORA-12638 fail to obtain credencial
    open "net manager"
    location station (ļ
    oracle߼ȫ
    "NTS" CLEAR!
    ȥnts֤

  3. #3
    Join Date
    Mar 2009
    Posts
    46
    Try this and see if it help resolve the problem:

    Change the value in SQLNET.AUTHENTICATION_SERVICES to NONE in the sqlnet.ora file

    Locate this file at :

    D:\oracle\product\10.2.0\db_1\NETWORK\ADMIN ( if your installation is on drive D)

    Directory may differ so check your accordingly

    Good luck

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