Hi, I have a table containing column emp_id and salary. Now I have a situation where my DB2 Cobol batch program is accessing a table to get minimum emp_id conditioned on salary say; Select min(emp_id), salary from table where salary< xyz for update of salary.
this emp_id is used by program and salary is increased by some amount to reach more than xyz value.
There can by multiple instances running in parallel to access this table.
I want to make sure that my program won't get concurrency and first table get the exclusive lock on result set so 2nd program won;t retrieve the same emp_id as result of query.
for Ex: table has
Emp Id Salary
Now first program will retrieve emp_id 11 and 2nd program will also retrieve emp_id 11. My requirement is that second instance of program wait till first program process emp_id, change the salary and commit the changes. second instance should get emp_id 12.
I tried to execute query with isolation level 'RR' but doesn't sure it's working.
Thanks , A