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.

learn more… | top users | synonyms

0
votes
1answer
606 views

MySQL: Transaction and Deadlock

I have table "tbl_data", where have a lot of rows (3 - 5 million). I have JAVA (*.jar) module from which I INSERT/UPDATE data into this table. If I start *.jar file (for example, "run.jar") and after ...
0
votes
0answers
613 views

Single DELETE statement deadlocking in Sybase ASE

I've got a fairly straightforward process running on ASE 15.7, that creates rows in two tables and later deletes them. The tables are both configured to use datapages for the locking scheme, and the ...
0
votes
0answers
179 views

Lock timeouts on a table with two keys, where only one connection writes for a given value of the first key at a time

I have a table user_rollup_message_list that is keyed by (user_id, message_reference). It is a write-heavy table, and gets enough writes that I get many lock timeouts, with a timeout of 50 seconds, ...
0
votes
1answer
2k views

Why are these two INSERTs deadlocking? Is it the trigger? What does this deadlock trace 1222 log tell me?

We are seeing intermittent deadlocks in production when receiving multiple simultaneous API requests. Each request basically culminates in an INSERT statement into the same table, which is where we ...
0
votes
1answer
1k views

SQL Server 2008, database completely locked

Our database becomes completely locked, and it seems that many tables not related to each other are locked at once. When this happens, it becomes locked for approximately 2 minutes, and when this ...
0
votes
1answer
301 views

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 -> ...
0
votes
1answer
139 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 ...
-1
votes
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 ...
-1
votes
1answer
683 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 Operation.Record ...
-1
votes
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 ...
-1
votes
0answers
380 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 ...
-4
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