SAP Note 25071 - Parallel update programs block each other

Symptom:

Description:
When making or canceling an allocation, all parallel update programs are filled but they all block each other in their execution sequence.

Result:
Update program 2 waits for update program 1; update program 3 waits for update program 2, and so on

Transactions:
KSV5, KSU5, KSVB, KSUB, KSW5, KEU5, GA15, GA35, GA2B, GA4B

Program name:
SAPMKGAL; ALxxyyyR

Cause and prerequisites

The lock situation is a result of updating table T811C, where the last person changing and the change date of the cycle is updated.

Solution
The following program corrections can be installed in your system as an immediate correction. It stops table T811C from being updated. Since the information stored there is not used operatively, this change is not critical.

Additional key words

Allocation