What are the different mechanisms that MySQL uses to manage concurrent access to data within transactions

Feb 3, 2025 ... The recommended transaction isolation level for Drupal sites is 'READ COMMITTED'. The 'REPEATABLE READ' option is supported but can result in ... Oct 10, 2018 ... Amazon RDS for MySQL now supports global transaction identifiers (GTIDs) ... Amazon RDS for MySQL now supports global transaction identifiers ( ... A way to override local infile handler for this transaction. Destructor of transaction will restore original handler. MySQL Transactions and Data Integrity · Start a Transaction with BEGIN. In this step, you will learn how to start a transaction in MySQL using the BEGIN ... As per the MySQL documentation, this error should occur for “operations that make a temporary copy of the original table and delete the original table when the ... May 28, 2022 ... It seems that the transaction locks the tables, and although the process above takes only about 3-6 seconds, it causes about once a day Lock wait timeout ... Jul 24, 2022 ... MySQL. Postgres. SQL Server. SQLite defaults transactions to ... startTransaction - starts a new transaction inside the query runner instance. Jan 19, 2009 ... In this post I'll look at another Rails innovation that can be applied equally well to unit testing with Drupal: running each unit test in a separate database ... If you decide to use a MySQL or MariaDB database, ensure the following: The transaction isolation level is set to “READ-COMMITTED” in your MariaDB server ... Dec 29, 2020 ... Autocommit setting: By default, MySQL runs with autocommit mode enabled. This means that, when not otherwise inside a transaction, each ...