13.7.5.35 SHOW STATUS Statement
SHOW [GLOBAL | SESSION] STATUS
[LIKE 'pattern' | WHERE expr]
As of MySQL 5.7.6, the value of the show_compatibility_56
system variable affects the information available from and privileges required for the statement described here. For details, see the description of that variable in Section 5.1.7, “Server System Variables”.
SHOW STATUS
provides server status information (see Section 5.1.9, “Server Status Variables”). This statement does not require any privilege. It requires only the ability to connect to the server.
Status variable information is also available from these sources:
Performance Schema tables. See Section 25.12.14, “Performance Schema Status Variable Tables”.
The
GLOBAL_STATUS
andSESSION_STATUS
tables. See Section 24.10, “The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables”.The mysqladmin extended-status command. See Section 4.5.2, “mysqladmin — A MySQL Server Administration Program”.
For SHOW STATUS
, a LIKE
clause, if present, indicates which variable names to match. A WHERE
clause can be given to select rows using more general conditions, as discussed in Section 24.35, “Extensions to SHOW Statements”.
SHOW STATUS
accepts an optional GLOBAL
or SESSION
variable scope modifier:
With a
GLOBAL
modifier, the statement displays the global status values. A global status variable may represent status for some aspect of the server itself (for example,Aborted_connects
), or the aggregated status over all connections to MySQL (for example,Bytes_received
andBytes_sent
). If a variable has no global value, the session value is displayed.With a
SESSION
modifier, the statement displays the status variable values for the current connection. If a variable has no session value, the global value is displayed.LOCAL
is a synonym forSESSION
.If no modifier is present, the default is
SESSION
.
The scope for each status variable is listed at Section 5.1.9, “Server Status Variables”.
Each invocation of the SHOW STATUS
statement uses an internal temporary table and increments the global Created_tmp_tables
value.
Partial output is shown here. The list of names and values may differ for your server. The meaning of each variable is given in Section 5.1.9, “Server Status Variables”.
mysql> SHOW STATUS;
+--------------------------+------------+
| Variable_name | Value |
+--------------------------+------------+
| Aborted_clients | 0 |
| Aborted_connects | 0 |
| Bytes_received | 155372598 |
| Bytes_sent | 1176560426 |
| Connections | 30023 |
| Created_tmp_disk_tables | 0 |
| Created_tmp_tables | 8340 |
| Created_tmp_files | 60 |
...
| Open_tables | 1 |
| Open_files | 2 |
| Open_streams | 0 |
| Opened_tables | 44600 |
| Questions | 2026873 |
...
| Table_locks_immediate | 1920382 |
| Table_locks_waited | 0 |
| Threads_cached | 0 |
| Threads_created | 30022 |
| Threads_connected | 1 |
| Threads_running | 1 |
| Uptime | 80380 |
+--------------------------+------------+
With a LIKE
clause, the statement displays only rows for those variables with names that match the pattern:
mysql> SHOW STATUS LIKE 'Key%';
+--------------------+----------+
| Variable_name | Value |
+--------------------+----------+
| Key_blocks_used | 14955 |
| Key_read_requests | 96854827 |
| Key_reads | 162040 |
| Key_write_requests | 7589728 |
| Key_writes | 3813196 |
+--------------------+----------+