… the ALTER in your test case is waiting on InnoDB row locks by setting innodb_lock_wait_timeout to 1 and then issuing the ALTER…_lock_wait_timeout=1; alter table t1 engine=innodb; And the alter will timeout after approximately a second with the following error: ERROR 1205 (HY000): Lock wait timeout…
Post: MySQL 5.6 Compatible Percona Toolkit 2.2 Released
March 25, 2013 By 2 Comments
… it and how. There’s still one noticeable omission: pt-table-sync. It’s still unclear if or how one would… its tries and wait time between tries for all operations are configurable. Also, we removed –lock-wait-timeout which set innodb_lock_wait_timeout because that now conflicts, or is at least confused with, lock_wait_timeout (introduced in MySQL 5.5) for metadata locks…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
… system_time_zoneblogpercona.commanual table_definition_cacheblogpercona.commanual table_lock_wait_timeoutblogpercona.commanual Table_locks_immediateblogpercona.commanual Table_locks_waitedblogpercona.commanual table_open_cacheblogpercona.commanual table_typeblogpercona.commanual tc_heuristic…
Post: Implications of Metadata Locking Changes in MySQL 5.5
February 1, 2013 By 9 Comments
… TABLE, this will make sure that the CREATE fails immediately (however due to a different reason): session2 > set session lock_wait_timeout=1;CREATE TABLE t1(i int(11) not null auto_increment primary key) ENGINE=InnoDB; However, I feel that the CREATE TABLE…
Post: InnoDB's gap locks
March 27, 2012 By 15 Comments
… ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction transaction2 > INSERT INTO t VALUES(29); ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting …TABLE LOCK table `test`.`t` trx id 72C lock mode IX RECORD LOCKS space id 19 page no 4 n bits 80 index `age` of table…
Post: Test Drive of Solid
September 22, 2006 By 5 Comments
… expect deadlock here – but not – just waiting… In 30 sec Session1: ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction So as we… or giving error to the user you’re forced to wait. Setting lock wait timeout to some small value is not optimal solution ether… test2 set names=’SolidDB’ where id=2; … waiting… in 30 sec: ERROR 1031 (HY000): Table storage engine for ‘test2′ doesn’t have…
Comment: InnoDB's gap locks
May 7, 2012 By 15 Comments
… (HY000): Lock wait timeout exceeded; try restarting transaction root@localhost:test 14:38:03>insert into t values(23); ERROR 1205 (HY000): Lock wait timeout exceeded… id 1100101952 inserting mysql tables in use 1, locked 1 LOCK WAIT 2 lock struct(s), heap size 1216, 1 row lock(s) MySQL thread id…
Comment: MySQL Server Memory Usage
September 1, 2006 By 21 Comments
…Sort_range’, ’56479689′ ‘Sort_rows’, ’1344092495′ ‘Sort_scan’, ’935242′ ‘Table_locks_immediate’, ’895966639′ ‘Table_locks_waited‘, ’20096′ ‘Threads_cached’, ’0′ ‘Threads_connected’, ’260′ ‘…pool_size=20M innodb_file_io_threads=4 innodb_lock_wait_timeout=15 # CHANGED from 50 innodb_log_files_in_group…
Comment: MySQL 5.5 lock_wait_timeout: patience is a virtue, and a locked server
March 1, 2013 By 5 Comments
Hi Daniel, Your ALTER TABLE certainly doesn’t run for a year, but it can … a 1-hour lock wait timeout can be a bug. lock_wait_timeout affects must affect all locks – in particular, it affects GRL and MyISAM locks. The fact… obey the setting of lock_wait_timeout is a bug in InnnoDB, which is a world in itself, not in lock_wait_timeout. It’s both…
Post: Pitfalls of converting to InnoDB
February 25, 2007 By 16 Comments
…broken by new unexpected errors 1205 (ER_LOCK_WAIT_TIMEOUT) Lock wait timeout expired. Transaction was rolled back. 1213 (ER_LOCK_DEADLOCK) Transaction deadlock. You should …-p$DBPWD –batch –column-names=false -e “show tables” $DBNAME); do echo “Converting table $t” mysql -u$DBUSER -p$DBPWD -e “…
