Answer Posted / bhupendra singh koranga

Please check your tnsnames.ora file on client machine..
the parameter should be like this..
database =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =ip addrss or name
of the host)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = service name or database name)
)
)
fix it up...
and then just connect it again..
it will work..

in user parameter property we have list of values.can we write select query for binding? for example:: select empno from emp where deptno=:deptnum :deptnum is first parameter it displays distinct dept nos. if i do like this it is giving error:: bind variables are not allowed in the select statement

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