Contents
Should I backup INFORMATION_SCHEMA?
information_schema should never be backuped, for the same reason why you never backup the result of a SHOW TABLE STATUS result, or SHOW PROCESSLIST. This db only contains transient information which can be very useful at runtime, but never contains any real data you need afterwards for anything.
How do I backup a MySQL schema?
Create a backup using MySQL Workbench
- Connect to your MySQL database.
- Click Server on the main tool bar.
- Select Data Export.
- Select the tables you want to back up.
- Under Export Options, select where you want your dump saved.
- Click Start Export.
- You now have a backup version of your site.
What is INFORMATION_SCHEMA MySQL?
INFORMATION_SCHEMA provides access to database metadata, information about the MySQL server such as the name of a database or table, the data type of a column, or access privileges. Other terms that are sometimes used for this information are data dictionary and system catalog.
How do I dump infoschema?
To dump INFORMATION_SCHEMA, name it explicitly on the command line and also use the –skip-lock-tables option. mysqldump never dumps the performance_schema database.
What is the default database in MySQL?
Every MySQL is shipped with default system schemas/databases. Those are: mysql – is the system database that contains tables that store information required by the MySQL server. information_schema – provides access to database metadata.
How is the Performance Schema implemented in MySQL?
The MySQL Performance Schema is a feature for monitoring MySQL Server execution at a low level. The Performance Schema has these characteristics: The Performance Schema provides a way to inspect internal execution of the server at runtime. It is implemented using the PERFORMANCE_SCHEMA storage engine and the performance_schema database.
Is the MySQL SYS schema installed by default?
The MySQL sys schema is a set of objects that provides convenient access to data collected by the Performance Schema. The sys schema is installed by default. For usage instructions, see Chapter 27, MySQL sys Schema. User comments in this section are, as the name implies, provided by MySQL users.
What are the characteristics of the Performance Schema?
The Performance Schema has these characteristics: The Performance Schema provides a way to inspect internal execution of the server at runtime. It is implemented using the PERFORMANCE_SCHEMA storage engine and the performance_schema database. The Performance Schema focuses primarily on performance data.