No other clients are using this database at the moment.
But as you can see I close and remove the session upon thread completion. So I assumed it leaves some connection active. : (MySQLdb._exceptions.OperationalError) (1205, 'Lock wait timeout exceeded try restarting transaction')Īs I can see first thread is executed without problems. The above exception was the direct cause of the following exception: MySQLdb._exceptions.OperationalError: (1205, 'Lock wait timeout exceeded try restarting transaction') 09:52:06,610 DEBUG Thread-10001280 build_network Committing transactionįile "/var/line 1277, in _execute_context 09:52:04,812 DEBUG Thread-10000060 build_network Committing transaction Here is a log of execution: 09:52:02,846 INFO MainThread build_network 1 of 109015. Target=_build_page_nodes, args=(node_id, traversing_nodes, update),ĭef _build_page_nodes(node_id, traversing_nodes, update):įirst thread executes fine. Session = scoped_session(session_factory) Data source is a bottleneck in my case therefore the data comes in chunks in multiple threads: engine = sessionmaker(bind=engine) The above simply means the transaction has reached the innodblockwaittimeout while waiting to obtain an exclusive lock which defaults to 50 seconds. My try/catch was not wrapping enough of the logic and it was erroring between begin transaction and try-catch-rollback.įourth, consider placing all parts of transaction in the same try-catch, which has some benefits in making sure all parts are there and easily visible.I work on a data import application that updates a database. One of the most popular InnoDB’s errors is InnoDB lock wait timeout exceeded, for example: SQLSTATEHY000: General error: 1205 Lock wait timeout exceeded try restarting transaction.
1205 LOCK WAIT TIMEOUT EXCEEDED UPDATE
Then you can changes the innodb lock wait timeout setting in php.ini file. I get error: 'Unable to execute UPDATE statement UPDATEinvoicetestSETIDTEST:p1 WHERE invoicetest. Due to this reason website stopped working. This turned out to be exactly what my problem was. When externol script is running its apply changes in database for multiple time, Because of this mysql services is stack.
Thirdly, look for unclosed transactions, ie begin without rollback or commit. This way you get quick feedback and don't spend your whole day waiting for tests to run. Next, reduce the lock wait timeout ( SET GLOBAL innodb_lock_wait_timeout = 10). Post by Geoff Ive looked through the docs. Utilize whatever mechanism your ecosystem provides to selectively run tests (Example: only on test methods and phpunit -group only) + 3042268: SQLSTATEHY000: Ge neral error: 1205 Lock wait timeout exceeded try restarting transaction The SE accepted answer and that article it links to, and existing core issues all say to use read committed. Post by Geoff Hi, Im getting this exception: Lock wait timeout exceeded try restarting transaction. If you are doing test driven development, isolate which combination of tests produce the error.
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