ron
Member
Most of what promon displays is pretty obvious, but there are certain things that I have to admit to being rather hazy about - even though I've worked with Progress quite a while. Maybe someone can help me to understand the following:
D = "downgrade"
As I understand it - when a transaction ends, EXCL locks get downgraded to SHR. Are these the lock entries that get a flag of "D"?
L = "limbo"
Progress says it's a record "released" before the end of the transaction. I can see EXCL entries with an "L". What is the effect of such entries in the lock table? Are they only created by using RELEASE within a transaction?
P / PURG
Progress says (as I understand it) that these entries "do nothing". So why do they exist?
D = "downgrade"
As I understand it - when a transaction ends, EXCL locks get downgraded to SHR. Are these the lock entries that get a flag of "D"?
L = "limbo"
Progress says it's a record "released" before the end of the transaction. I can see EXCL entries with an "L". What is the effect of such entries in the lock table? Are they only created by using RELEASE within a transaction?
P / PURG
Progress says (as I understand it) that these entries "do nothing". So why do they exist?