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CAP limit for number of enrollments

 
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shahbazpc
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PostPosted: Fri Dec 12, 2014 4:32 am    Post subject: CAP limit for number of enrollments Reply with quote

hi,
I want to design a SP which can do enrollments in an Offer.
We have an Offer table which maintains a single row for each offer. this offer row also has a CAP limit and a Running CAP field.
there is a separate enrollment table, when ever enrollment record inserted into erollment table for an offer, Running Cap is incremented by +1 in Offer table with a Update query for that offer.

when Running CAP becomes equal to CAP limit. enrollments are not allowed.

we are using DB2 Z/os tables.

Problem: When ever an offer is launched, enrollemnts use to come with a heavy traffic. So updating the Running CAP gives a Deadlock to many users, because at the same time all the enrollments will try to Add +1 to the running cap.

Is there any other approach I can use here? i have to do this in a very short Response time.
is there a way like whenever a record is inserted in enrollment table, i can give a numbering to it.
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