Questions tagged [lock-escalation]

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Why Table Lock Escalation is happening in my scenario

I have a table Table1 that is updated in small chunks using below query: update top (1000) Table1 set VarcharColumn1 = 'SomeValue' from Table1 where ID in (select ID from Table2) and ...
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0answers
53 views

DeadLock - Two Process Locked Same Index

We have met a scenario that two process acquired exclusive lock on same index ans the same time two are requesting for shared lock to other process which eventually leads to dead lock. I am still not ...
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0answers
42 views

sql server lock escalation [duplicate]

In sql server row and page lock can be escalated to table level. Can table level locks be escalated to a schema level, schema locks to database level and so on?
4
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1answer
2k views

Indexes with High Lock waits - how to fix

I've been running dbo.sp_BlitzIndex and have 4 somewhat similar indexes on the main table in my database. Each one has a high number of waits and escalation attempts. I'm not sure where these are ...
0
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0answers
201 views

Should Partitioned Tables Be Set to Escalation Lock of AUTO By Default

We're partitioning a handful of tables. We're hoping better concurrency will be part of the result from this change. However, even though setting the table level lock escalation to AUTO (partitions) ...
2
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2answers
143 views

Handle concurrency on Sql Server to modify specific column

I have table that suffers from racing condition and I don't know how to fix it. I can't solve it 100% in code, so I need the server to help me. The scenario Admins of a system may accept or reject ...
3
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1answer
6k views

Risk of disabling page locking

In another question a user asks how to force row level locking. The answer that he receives tell them how to force row level locking by altering the table and the indexes. The user that answered the ...
1
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2answers
1k views

SQL Server 2008 - get current LOCK_ESCALATION on particular table

Is there a way to find the current setting for LOCK_ESCALATION on particular table? Can it be found through system views?
7
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1answer
2k views

Why isn't partition-level lock escalation the default?

In SQL Server, locks are normally escalated from row or page -> table. Starting with SQL Server 2008, a new level of lock escalation was added - partition level. However, this isn't automatically ...
5
votes
2answers
13k views

can I resolve a deadlock with the rowlock hint?

I have a large delete stored proc and I've reproduced a deadlock in a situation where the deletes would not have deleted anything. It looks like the part of the stored proc that hit a deadlock was ...
45
votes
4answers
39k views

What is lock escalation?

I was asked this question at an interview and had no answer. Can anyone here explain?