FRM-99999 ERRORE 408 OCCURRED FRM-40655 SQL ERROR FORCED ROLLBACK CLEAR FRO

Question

Dear Friends
I am getting this FRM-99999 ERRORE 408 OCCURRED FRM-40655 SQL ERROR FORCED ROLLBACK CLEAR FROM AND RE-ENTER TRANACTION.
FRM-40512 ORACLE ERROR UNABLE TO ISSUE SAVE POINT COMAND.
I am calling the form using the following script :
:global.command_line := 'C:\SALES\NEW_ITEMS.FMX' ;
CALL_FORM(:global.command_line);
go_block('COP_ORDER_DETAILS');
go_record(:global.l_n_curr_rec2);
:COP_ORDER_DETAILS.ITEM_CODE :=:GLOBAL.ITEM_CODE_VAR;
:COP_ORDER_DETAILS.COLOR := :GLOBAL.COLOR_CODE ;
:COP_ORDER_DETAILS.SHAPE_CODE := :GLOBAL.SHAPE_CODE ;
:COP_ORDER_DETAILS.DELIVERY_QUANTITY := :GLOBAL.QTY ;
:COP_ORDER_DETAILS.VOLUME := :GLOBAL.VOLUME;
It works fine for one record, when I try to create another record by calling the called form it gives the above messages.
Waiting for your valuable replay.
Best regards
Jamil

Answer 1

This happens due to dead lock situation
To avoid this problem, add NOWAIT option to the UPDATE and DELETE statements, which returns ORA-00054 error, trap this error and display user defined message like 'The record is being accessed and try after some time'.
This even improves the performance
because no process waits for the locks preventing dead locks.
If it is due to the UPDATE's or DELETE's with base table blocks in the form, in the PRE-UPDATE and PRE-DELETE triggers write SELECT statements to select the particular row with FOR UPDATE NO WAIT option. Handle by trapping the ORA-00054 error