1205 Sql Error
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Sql Server Error 1205
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Sql Server Error Code 1205
each other. Join them; it only takes a minute: Sign up MySQL Error Code: 1205. Lock wait timeout during update with inner join up vote 3 down vote favorite 1 I am trying to update the Time_Stamp field in https://support.microsoft.com/en-us/kb/3052167 my table, simple_pack_data, to match the values in the similarly titled field in my temp_data table. The tables each have fields called Test_Number and Time_Marker, which I'm using to INNER JOIN the tables. Time_Marker is like a reading count, where Time_Stamp is an actual time from the start of the test. I want to update the Time_Stamp one test at a time, so the code I have been trying is: UPDATE simple_pack_data s INNER JOIN ( SELECT http://stackoverflow.com/questions/19458960/mysql-error-code-1205-lock-wait-timeout-during-update-with-inner-join * FROM temp_data t WHERE t.Test = "3" ) AS tmp ON s.Test_Number = tmp.Test_Number AND s.Time_Marker = tmp.Time_Marker SET s.Time_Stamp = tmp.Time_Stamp WHERE s.Test_Number = "3"; When I run this it takes over 50 seconds and I get the 1205 error. If I run a similarly structured select statement: SELECT * FROM simple_pack_data s INNER JOIN ( SELECT * FROM temp_data t WHERE t.Test = "3" ) AS tmp ON s.Test_Number = tmp.Test AND s.Time_Marker = tmp.Time_Marker WHERE s.Test_Number = "3"; It takes much less than a second and I know join is working fine. Is the update really taking that long? If so, is there any way to change the timeout value so it can get through it? mysql sql mysql-workbench mysql-error-1205 share|improve this question asked Oct 18 '13 at 20:59 eh_whatever 28115 1 I've seen this error a couple times...it's InnoDB and row level locking at it's finest. Best solution is to uninstall MySQL and use Postgres ;) There is a lot of info on this error on the net, you aren't the only one with this issue. This link helped me in the past. mysqlperformanceblog.com/2012/03/27/innodbs-gap-locks –Twelfth Oct 18 '13 at 21:19 Thank You! The link and the subsequent information I found on setting the transaction to 'READ COMMITTED' did the trick. I'll definitely consider moving to Postgres in the future, but given
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/5389261/sql-transaction-was-deadlocked company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million http://www.sql-server-performance.com/2006/deadlocks/ programmers, just like you, helping each other. Join them; it only takes a minute: Sign up SQL Transaction was deadlocked up vote 12 down vote favorite 4 Sometimes I get this kind of exception on not sql error very busy SQL server: Transaction (Process ID 57) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. Line number: 1 Error Number: 1205 Procedure: Server name: P01 Error Source: .Net SqlClient Data Provider Error State: 47 I'm not able to reproduce it. I tried to run several queries from different clients at the same time, but it didn't show up. What is the best sql error 1205 way to handle this kind of issue when it happens inside procedure or inside trigger? I mean, how to rerun the transaction? How to do it when exception occurs inside procedure called from the trigger, which was called by the insert made by some procedure (that is: procedure01 -> insert -> trigger -> procedure02 !) sql-server exception stored-procedures triggers share|improve this question asked Mar 22 '11 at 9:41 Piotr Salaciak 9511918 add a comment| 2 Answers 2 active oldest votes up vote 21 down vote accepted I would suggest that you come at the problem from two perspectives. Trap or Catch Deadlock Errors so that you can re-run the transaction that is chosen as the Deadlock Victim by the SQL Server database engine. Find out what is causing your Deadlock Events. You can do this in one of two ways, either run a SQL Server Profiler Trace to catch and record the Deadlock Event or you can enable some SQL Server Trace Flags that will record the details of the Deadlock Event to the SQL Server Error Log. In the vast majority of cases, you can identify the cause of your Deadlock Events and remedy the situation through either a structural change in the database schema or a logical change to the code involved/responsible for the Deadlock Ev
has. When this happens, SQL Server identifies the problem and ends the deadlock by automatically choosing one process and aborting the other process, allowing the other process to continue. The aborted transaction is rolled back and an error message is sent to the user of the aborted process. Generally, the transaction that requires the least amount of overhead to rollback is the transaction that is aborted. As you might imagine, deadlocks can use up SQL Server's resources, especially CPU power, wasting it unnecessarily. Most well-designed applications, after receiving a deadlock message, will resubmit the aborted transaction, which most likely can now run successfully. This process, if it happens often on your server, can drag down performance. If the application has not been written to trap deadlock errors and to automatically resubmit the aborted transaction, users may very well become confused as to what is happening when they receive deadlock error messages on their computer. Here are some tips on how to avoid deadlocking on your SQL Server: Ensure the database design is properly normalized. Have the application access server objects in the same order each time. During transactions, don't allow any user input. Collect it before the transaction begins. Avoid cursors. Keep transactions as short as possible. One way to help accomplish this is to reduce the number of round trips between your application and SQL Server by using stored procedures or keeping transactions with a single batch. Another way of reducing the time a transaction takes to complete is to make sure you are not performing the same reads over and over again. If your application does need to read the same data more than once, cache it by storing it in a variable or an array, and then re-reading it from there, not from SQL Server. Reduce lock time. Try to develop your application so that it grabs locks at the latest possible time, and then releases them at the very earliest time. I