obclient [oceanbase]> SHOW VARIABLES LIKE 'ob_query_timeout';
+------------------+----------+
| Variable_name | Value |
+------------------+----------+
| ob_query_timeout | 10000000 |
+------------------+----------+
使用 CHANGE TENANT 命令把租户从 sys 切换到 mysql。
obclient [oceanbase]> ALTER SYSTEM CHANGE TENANT mysql;
Query OK, 0 rows affected (0.00 sec)
obclient [oceanbase]> SHOW TENANT;
+---------------------+
| Current_tenant_name |
+---------------------+
| mysql |
+---------------------+
1 row in set (0.03 sec)
设置 mysql 租户的全局变量 ob_query_timeout=20000000。
obclient [oceanbase]> SET GLOBAL ob_query_timeout=20000000;
Query OK, 0 rows affected (0.01 sec)
obclient [oceanbase]> show global variables like 'ob_query%';
+------------------+----------+
| Variable_name | Value |
+------------------+----------+
| ob_query_timeout | 20000000 |
+------------------+----------+
1 row in set (0.00 sec)