MySQL also has intention locks. These are related to tables and indicate the kind of locks a transaction intends to acquire on rows in the table. Locking is crucial to guarantee consistency and reliability in highly-concurrent environments. However, when optimizing for performance, some trade-off ...
but if it has to do with table locking you may try to convert your table to the InnoDB storage engine (it will take some time for large table). InnoDB support multi-versionning and row-level locking which may solve your problem. Regards, Thomas CORBIERENavigate...
In addition, details of any mismatches in metadata properties are now written to the MySQL server error log. The formats used for the error log messages differ slightly depending on whether the discrepancy is found on the table level or on the level of a column, index, or foreign key. The...
You have found a bug in mysqld that caused it to die in the middle of an update. Some external program is manipulating data files or index files at the same time as mysqld without locking the table properly. You are running many mysqld servers using the same data directory on a sys...
1 mysql> show warnings\G *** 1. row *** Level: Note Code: 1592 Message: Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statements writing to a table with an auto-increment column after selecting from another table are unsafe because the ...
Here is a table comparing relational database management systems (RDBMS) with database management systems (DBMS). Relational Database Management System Pros and Cons Relational database management systems (RDBMS) are widely used in various industries due to their structured approach to data management...
There is a need to provide physical security like locking the server rooms and having security teams monitor every physical access to the server room. Physical hardware requires a lot of regular maintenance and there is a need to have a proper disaster recovery plan in place, like backing up ...
1. InnoDB: A transaction-safe (ACID compliant) storage engine for MySQL that has commit, rollback, and crash-recovery capabilities to protect user data. InnoDB row-level locking (without escalation to coarser granularity locks) and Oracle-style consistent nonlocking reads increase multi-user concur...
[21 Sep 2020 16:31] MySQL Verification Team Hi, The purpose of the above LOCK command is not intended for mysqldump. It is too prohibitive command for the utility that does not require any locking, except for non-transactional engines and massive DDLs....
will be very stressed with lots and lots of selects and considerable number of inserts. I've decided to use InnoDB because of it's locking system. However i think the stress will generate a lot of overhead which, even with a daemon that optimizes the table everyday, is bad. ...