Is it safe to delete Ib_logfile?
8 Answers. That ibdata1 isn’t shrinking is a particularly annoying feature of MySQL. The ibdata1 file can’t actually be shrunk unless you delete all databases, remove the files and reload a dump. But you can configure MySQL so that each table, including its indexes, is stored as a separate file.
What is the use of ibdata1 file in MySQL?
3 Answers. The file ibdata1 is the system tablespace for the InnoDB infrastructure. You can separate Data and Index Pages from ibdata1 by enabling innodb_file_per_table. This will cause any newly created InnoDB table to store data and index pages in an external .
What is stored in ibdata1?
The single ibdata1 file contains all the tables and indexes in your MySQL database. So, if you have a big database, this file size will grow really big.
What does the log file in MySQL do?
This will log all connections and queries to the log file (by default named ‘hostname’.log ). This log can be very useful when you suspect an error in a client and want to know exactly what mysqld thought the client sent to it. By default, the mysql.server script starts the MySQL server with the -l option.
When does MySQL create a new binary log file?
To the binary log filename, mysqld will append an extension that is a number that is incremented each time you execute mysqladmin refresh, execute mysqladmin flush-logs, execute the FLUSH LOGS statement, or restart the server. A new binary log will also automatically be created when it reaches max_bin_log_size.
What are the InnoDB files in MySQL-database?
If you want to know what the ib_logfile0 and ib_logfile1 are for, they are the InnoDB Redo Logs. They should never be erased or resized until a full normal shutdown of mysqld has taken place. If mysqld ever crashes, just start up mysqld.
What is the name of the index file in MySQL?
To determine which different binary log files have been used, mysqld will also create a binary log index file that contains the name of all used binary log files. By default this has the same name as the binary log file, with the extension ‘.index’ .