Databases – Page 4

Resolving error #1064 – You have an error in your SQL syntax

I noticed once when executing a SQL query the following error:

cPanel. Upgrade MySQL 5.5 to 5.7

For example, update the MySQL server from version 5.5 to 5.7.
Before performing an update, it is imperative that you make backup copies of all databases, including the standard ones.

Recovering MySQL InnoDB after power failure

Once, after the power was turned off, the UPS was discharged, then the generator automatic start did not work because it turned on and off several times, as a result, the server with MySQL was also started and disconnected from the power supply several times, later the tables of different databases were damaged , including the default database with mysql users, as a result, the MySQL daemon did not start.

Changing InnoDB log file size in MySQL

InnoDB log file size – the size of the transaction log files that are needed to cancel transactions and restore the database in case of failure.

Configuring InnoDB Buffer Pool size in MySQL

I will give an example of resizing the InnoDB buffer pool in MySQL.
In the InnoDB buffer pool, this is the memory space in which indexes, caches, buffers, etc. are stored.