A situation caused by two or more processes being unable to proceed (and thus release their locks) because they are blocked by locks on resources held by the other process.

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how to avoid deadlock while updating 2 rows in mysql [duplicate]

This is a interview problem. There is a perl program that updates the database, and it could run in different processes. One process may execute a transaction like: update row A -> update row B -> ...
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1answer
132 views

SQL Server 2012 - Deadlock happening daily

We have a performance issue with a 3rd-Party application using SQL Server 2012: deadlock happen at least 10 times an hour. The server is virtual server on VMWare 5.5 with PVSCSI adapter in persisted ...
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2answers
2k views

Deadlock from select statements

I am getting deadlock from 2 select statements. What is the reason for that? And how can I fix this issue? Deadlocked processes: 11278 Victim process: 5185 Lock type: Index/(Key) Both ...
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votes
1answer
676 views

dead lock when updating [closed]

Update Operation.TrTable Set RecordId = RecordTABLE.newRecordId From Operation.TrTable tr Inner Join ( SELECT r.Id AS newRecordId, r.KeyM AS MappingKey From ...
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0answers
64 views

Query Deadlock on Select Query [closed]

I have 2 queries deadlocking on each other. The first query is Select Top 1 NULL From [Table1] with (HOLDLOCK, TABLOCKX) Second Query is an insert query that only reads from [Table2] to put data ...
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0answers
369 views

Postgres database locked up [closed]

I was running a process to update a bunch of rows in postgres database and it locked up. Now I can't select anything out of it. None of my processes are "idle in transaction" when I execute ps ...
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votes
1answer
43 views

SQL db deadlocks [closed]

could any one please tell me how to monitor SQL db deadlocks How to prevent deadlocks How to cancel deadlocks without restarting the service. really highly appreciate your information