Error 1205 Hy000 Mysql
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a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table? up error 2006 hy000 mysql vote 56 down vote favorite 23 From a script I sent a query like this thousands of times to my local database: update some_table set some_column = some_value I forgot to add the where part, so the same column was set to the same a value for all the rows in the table and this was done thousands of times and the column was indexed, so the corresponding index was error 1215 hy000 mysql probably updated too lots of times. I noticed something was wrong, because it took too long, so I killed the script. I even rebooted my computer since then, but something stuck in the table, because simple queries take a very long time to run and when I try dropping the relevant index it fails with this message: Lock wait timeout exceeded; try restarting transaction It's an innodb table, so stuck the transaction is probably implicit. How can I fix this table and remove the stuck transaction from it? Edit: I solved the problem by dropping the table and restoring it from backup. mysql transactions share|improve this question edited Mar 12 '15 at 7:19 satoru 10k104390 asked May 4 '10 at 15:43 Tom 3,64321737 3 What is the output of SHOW FULL PROCESSLIST? –Wolph May 4 '10 at 15:48 It shows only the SHOW FULL PROCESSLIST command, nothing else. It's a local development database. Nothing is running on it. I got the 'lock wait..' error message on the command line when I tried dropping the index from there. –Tom May 4 '10 at 15:55 In that case you are probably creating 2 separate connections in different transactions that have to wait for eachother. –Wol
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Mysql Innodb_lock_wait_timeout
each other. Join them; it only takes a minute: Sign up How to debug Lock wait timeout exceeded? up vote 155 down vote favorite 66 In my production error logs I occasionally see: SQLSTATE[HY000]: General error: 1205 Lock http://stackoverflow.com/questions/2766785/fixing-lock-wait-timeout-exceeded-try-restarting-transaction-for-a-stuck-my wait timeout exceeded; try restarting transaction I know which query is trying to access the database at that moment but is there a way to find out which query had the lock at that precise moment? mysql debugging transactions innodb acid share|improve this question edited Nov 21 '14 at 11:26 Vlad Mihalcea 28.5k64068 asked May 14 '11 at 7:07 Matt McCormick 4,701135473 I heavily suggest everyone to give Eirik 's answer a shot –kommradHomer Apr http://stackoverflow.com/questions/6000336/how-to-debug-lock-wait-timeout-exceeded 10 '15 at 7:52 add a comment| 8 Answers 8 active oldest votes up vote 177 down vote What gives this away is the word transaction. It is evident by the statement that the query was attempting to change at least one row in one or more InnoDB tables. Since you know the query, all the tables being accessed are candidates for being the culprit. From there, you should be able to run SHOW ENGINE INNODB STATUS\G You should be able to see the affected table(s) You get all kinds of additional Locking and Mutex Information. Here is a sample from one of my clients: mysql> show engine innodb status\G *************************** 1. row *************************** Type: InnoDB Name: Status: ===================================== 110514 19:44:14 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 4 seconds ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 9014315, signal count 7805377 Mutex spin waits 0, rounds 11487096053, OS waits 7756855 RW-shared spins 722142, OS waits 211221; RW-excl spins 787046, OS waits 39353 ------------------------ LATEST FOREIGN KEY ERROR ------------------------ 110507 21:41:35 Transaction: TRANSACTION 0 606162814, ACTIVE 0 sec, process no 29956, OS thread id 1223895360 updating or deleting, thread declared inside InnoDB 499 mysql tables in use 1, locked 1 14 lock struct(s), heap size 3024, 8 row lock(s), undo log entries 1 MySQL thread id 3686635, query id 124164167 10.64.89.145 viget updating DEL
log in tour help Tour Start 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 company Business Learn http://dba.stackexchange.com/questions/21464/error-code-1205-lock-wait-timeout-exceeded-in-mysql more about hiring developers or posting ads with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database https://www.drupal.org/node/1320062 skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to hy000 mysql the top Error Code: 1205 Lock wait timeout exceeded in MySQL up vote 2 down vote favorite 2 I have set InnoDB lock wait time-out to 120 seconds. When I run the query below for first time, it works fine. However, the second time, the same query with a different value gives me: Error Code: 1205 Lock wait timeout exceeded; try restarting transaction INSERT INTO PM_SPEC_DOC_APPROVE ( SDA_SYS_NUM, SDA_SPEC_SYS_NUM, SDA_SYS_REV, SDA_APPR_UID, SDA_APPR_DATE, SDA_CR_UID, SDA_CR_DT, SDA_SRNO, SDA_NOTE) VALUES error 2002 hy000 ( '7414', '24510', NULL, 'E13462', '2012-07-25 16:35:49', 'E13462', '2012-07-25 16:35:49', '3', NULL) We are using MySQL v5.1 mysql mysql-5.1 share|improve this question edited Sep 6 '12 at 19:45 Max Vernon 26.9k1160118 asked Jul 25 '12 at 11:43 user1409935 58229 Can you add the output of SHOW CREATE TABLE PM_SPEC_DOC_APPROVE to the question, as well as SHOW FULL PROCESSLIST while the second one is running (the one that times out)? –Derek Downey Jul 25 '12 at 14:25 add a comment| 1 Answer 1 active oldest votes up vote 3 down vote innodb_lock_wait_timeout The default value is 50 seconds. A transaction that tries to access a row that is locked by another InnoDB transaction will hang for at most this many seconds before issuing the following error: ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction When a lock wait timeout occurs, the current statement is not executed. The current transaction is not rolled back. (Until MySQL 5.0.13 InnoDB rolled back the entire transaction if a lock wait timeout happened. You can restore this behavior by starting the server with the --innodb_rollback_on_timeout option By default, the transaction will not be rolled back. It is the responsibility of your application code to decide how to handle this error, whether that's trying again, or rolling back. Also You can see more details of the event by issuing a "SHOW ENGINE
that make connections all over the world. Join today Download & Extend Drupal Core Distributions Modules Themes Issues SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded Closed (duplicate)Project:Drupal coreVersion:7.x-devComponent:database systemPriority:NormalCategory:Bug reportAssigned:UnassignedReporter:rfayCreated:October 24, 2011 - 19:31Updated:August 25, 2016 - 14:09 Log in or register to update this issue Jump to:Most recent comment Most recent attachment My dev site is currently nonfunctional due to this locking issue. I thought I'd capture the error before proceding. I imagine others will see this too. Error message PDOException: SQLSTATE[HY000]: General error: 1205 Lock wait timeout exceeded; try restarting transaction: SELECT revision.order_number AS order_number, revision.revision_id AS revision_id, revision.revision_uid AS revision_uid, revision.mail AS mail, revision.status AS status, revision.log AS log, revision.revision_timestamp AS revision_timestamp, revision.revision_hostname AS revision_hostname, revision.data AS data, base.order_id AS order_id, base.type AS type, base.uid AS uid, base.created AS created, base.changed AS changed, base.hostname AS hostname FROM {commerce_order} base INNER JOIN {commerce_order_revision} revision ON revision.revision_id = base.revision_id WHERE (base.order_id IN (:db_condition_placeholder_0)) FOR UPDATE; Array ( [:db_condition_placeholder_0] => 4 ) in DrupalDefaultEntityController->load() (line 196 of /home/rfay/workspace/commerce/includes/entity.inc). Backtrace: PDOStatement->execute(Array) database.inc:2095 DatabaseStatementBase->execute(Array, Array) database.inc:651 DatabaseConnection->query('SELECT revision.order_number AS order_number, revision.revision_id AS revision_id, revision.revision_uid AS revision_uid, revision.mail AS mail, r