TMF Application Programmer's Guide (G06.26+)

TMF Programming Environment
HP NonStop TMF Application Programmer’s Guide—522419-005
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ENDTRANSACTION function. In almost any interactive environment, however, this
practice is unacceptable because it precludes concurrent access.
You can approximate level-3 consistency by:
•
Not using any of the SETMODE 4 read-through options
•
Using the READLOCK and READUPDATELOCK procedures instead of READ and
READUPDATE
•
Letting the disk process unlock all records implicitly as part of the
ENDTRANSACTION function
These practices do not prevent the inserted record problem or the deleted record
problem. If either problem could occur in your particular application environment, then
you can only achieve level-1 consistency.