Why is content import causing blocked transactions

Hi folks,
I'm doing a fairly large import of a delivery unit from development to staging environment and noticed that during my content import via delivery unit that many transactions are blocked for SLT trying to perform INSERTS and UPDATES into M tables like MARA, MARC etc. I noticed that the lock is being caused by a transaction running under _SYS_REPO so I assume it's my imported views activating. Should this activation be preventing inserts and updates? If that's the case should I stop SLT mass transfer jobs prior to activating lots of views? I was thinking that my activation is only READING and should not prevent inserts/updates.
Thanks,
-Patrick

Hi Patrick,
sorry - for some reason this one slipped my attention...
Anyhow, what I meant by "incompatible lock modes" was something like this:
Transaction A writes data into the table. To do that, a kind of "shared lock" is set for the table accessed. The point here is not to prevent data change, but to make sure that the table is neither dropped or structurally changed during the access.
Also: when there are exclusive locks on the table, this kind of lock cannot be set.
Transaction B now wants to activate the models and sets exclusive locks on the table during the activation so that the table reference can be set (I _guess_ here(!) that maintaining the reference between the column view and the table is handled just similar to ALTER/DROP TABLE concerning the locking scheme).
In this setup the lock mode "shared lock" on top of the "exclusive lock" wouldn't be compatible, that is both locks cannot exist at the same time for the same lock objects.
Does that make any sense?
Right now I don't have the option to check this hypothesis, but a try to check on that would include some tracing for the locks... (just in case anyone volunteers do try that).
Cheers,
Lars

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