SQL Problem in upgrading to V4R3 from V4R2

Hi Friends,

Two days back we moved from V4R2 to V4R3 after having an initial hitch-ups
with the first set of CDs. Now the new version (V4R3) is installed properly
on
our system (S20). We are facing some problems after we moved to the new 
release. One of the 

 In SQL If we take  <F4> On "SELECT fields  . . . . . . ." of SELECT
statement
    to get the column descriptions, its giving the following error :

   "No fields available in chosen file or files". When I pressed <F1> on
this 
    error message, It says the following :

  Cause . . . . . :   There are no fields that are available in the file or

         files that were selected from the file list.  One of the following

         conditions has occurred:

      -- The file has been deleted.

      -- Authorization to the file or files has changed.

      -- The file or files has been damaged.

      -- The session is not connected to a relational database.

      -- The current relational database manager does not support the
DESCRIBE 
         TABLE statement.

      -- More information may be available in messages by pressing F10
(Display
         messages in job log) on this display.


   Recovery  . . . :   If connected to the local relational database manager
and 
         the field list is needed, press F18 (Select fields) again.  Before
the field
         list is shown, a request to select a file or files from the file
list will  
         be shown on the display. If not connected to the local relational
database  
         manager, connect to a relational database manager that supports the
DESCRIBE
         TABLE statement and request a field list again.


Does V4R3 supports DESCRIBE TABLE or not ?

I have tried with different options here and found the following:
If the File Object name is in quotes (" "), then its giving the 
above error. 
For Ex. If the Object name is F.ILE1 (say), the SQL SELECT statement is 

FROM files . . . . . . . . . .  LIB1/"F.ILE1"  
SELECT fields  . . . . . . .  press <F4> here

then its giving the above error.

Now change the above object name to FILE1. Now the SQL SELECT statement is 

FROM files . . . . . . . . . .  LIB1/FILE1  
SELECT fields  . . . . . . .  press <F4> here

its showing the fields.

Please mail me the solutions as soon as possible.


Regards,
Murali Bhaavan.
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