Connection to DB from App server fails ORA-1017

Question

Oracle Enterprise Manager 10g Application Server Control 10.1.2.0.2
DB server1 - Has two DB instances SID=X, SID=Y
DB server2 - Has two DB instances SID=Y, SID=ZApplication server Tnsnames.ora file had entries for X and Y.
Y =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =DB server1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = Y.WORLD)
  )After Y,Z are installed in DB server2 (without dropping Y DB from DB server1) tnsnames.ora modified as follows
Y =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =DB server1)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = Y.WORLD)
  )to
Y =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =DB server2)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = Y.WORLD)
  )Now from Forms applications deployed in application server , we can connect to Z but we cannot connect to Y. We can connect to DB Y via SQL*Plus from Application server.
Need kind suggestions.
Best Regards,
Lokanath

Answer 1

Hi Lokanath,
Check this parameter
SQL> SHOW PARAMETER SEC_CASE_SENSITIVE_LOGON
NAME                                 TYPE        VALUE
sec_case_sensitive_logon             boolean     TRUEIf value is True set it to False.
SQL> ALTER SYSTEM SET SEC_CASE_SENSITIVE_LOGON = FALSE;
System altered.Try this Hope it works.
Regards
Santosh Mahajan
Edited by: SanOra13 on Mar 15, 2012 11:59 PM