The Ultimate Guide to High Availability with MariaDB

Performance Schema accounts Table

Description

Each account that connects to the server is stored as a row in the accounts table, along with current and total connections.

The table size is determined at startup by the value of the performance_schema_accounts_size system variable. If this is set to 0, account statistics will be disabled.

ColumnDescription
USERThe connection's client user name for the connection, or NULL if an internal thread.
HOSTThe connection client's host name, or NULL if an internal thread.
CURRENT_CONNECTIONSCurrent connections for the account.
TOTAL_CONNECTIONSTotal connections for the account.

The USER and HOST values shown here are the username and host used for user connections, not the patterns used to check permissions.

Example

SELECT * FROM performance_schema.accounts;
+------------------+-----------+---------------------+-------------------+
| USER             | HOST      | CURRENT_CONNECTIONS | TOTAL_CONNECTIONS |
+------------------+-----------+---------------------+-------------------+
| root             | localhost |                   1 |                 2 |
| NULL             | NULL      |                  20 |                23 |
| debian-sys-maint | localhost |                   0 |                35 |
+------------------+-----------+---------------------+-------------------+

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