WebSep 27, 2024 · Unlike FLUSH TABLES WITH READ LOCK, LOCK TABLES FOR BACKUP does not flush tables, i.e. storage engines are not forced to close tables and tables are not expelled from the table cache. As a result, LOCK TABLES FOR BACKUP only waits for conflicting statements to complete (i.e. DDL and updates to non … WebDec 26, 2012 · You select each of the tables from the database. This may be better than "FLUSH TABLES WITH READ LOCK" which locks all tables in all databases but your …
How do I set MySQL temporarily to read-only through the …
WebSep 28, 2015 · Here is an except from that post under the heading "Option 4 : USE YOUR IMAGINATION" Point #2: Using separate process, run "FLUSH TABLES WITH READ LOCK; SELECT SLEEP (86400)" before launching mysqldumps. Kill this process after mysqldumps are complete. This is helpful if a database contains both InnoDB and MyISAM. WebFollowing set of queries locks the instance flushes the above created tables and unlocks the instance. mysql> LOCK INSTANCE FOR BACKUP; Query OK, 0 rows affected (0.00 … fisher price thomas tidmouth sheds
mysqldump - Global Read Lock for Snapshot of MySQL Data
WebSep 2, 2014 · 1 Answer Sorted by: 15 A quick search results in the correct chapter of the manual with: mysql> FLUSH TABLES WITH READ LOCK; mysql> SET GLOBAL read_only = ON; Share Improve this answer Follow answered Sep 2, 2014 at 5:39 HBruijn 74.1k 23 133 196 Add a comment Not the answer you're looking for? Browse other … WebThe Problem. After issuing FLUSH TABLES WITH READ LOCK, we can see it is pended for a long time with one of the following status: Check whether there are any long-running queries which execution time is the same or longer than the time the FLUSH TABLES WITH READ LOCK has been waiting. You can consider killing this query to allow the rest of the ... WebFLUSH TABLES; SET GLOBAL read_only = 1; That way, you only have to run SET GLOBAL read_only = 0; to get writes going again. FLUSH TABLES WITH READ LOCK does not halt InnoDB writes to Transaction Logs, Redo Logs, an Undo Logs. That's why SET GLOBAL read_only = 1; is your friend. CAVEAT. In my early days a a DBA, I used … fisher-price thomas \u0026 friends trackmaster