Dezhi Systems support site

when i enter A( DB2 Administration Tools) option from ISPF Primary Option, it shows an folowing error ;

DB2 Admin --------------------- DB2 Error Display 1 --------------------- 01:44
Command ===>
Rollback done
SQLCODE : -805 DSNTIAR CODE : 0

DSNT408I SQLCODE = -805, ERROR: DBRM OR PACKAGE NAME DALLAS8..ADB2CON.1678DF0-
E004395A0 NOT FOUND IN PLAN ADB. REASON 03
DSNT418I SQLSTATE = 51002 SQLSTATE RETURN CODE
DSNT415I SQLERRP = DSNXEPM SQL PROCEDURE DETECTING ERROR
DSNT416I SQLERRD = -251 0 0 -1 0 0 SQL DIAGNOSTIC INFORMATION
DSNT416I SQLERRD = X'FFFFFF05' X'00000000' X'00000000' X'FFFFFFFF'
X'00000000' X'00000000' SQL DIAGNOSTIC INFORMATION

Thanks & Regards
Shivakumar