max_user_connections

Description

max_user_connections specifies the maximum number of connections that a single user can establish with an OBServer node.

Privilege requirements

• Query variables

  • Global level

    sys tenant and all user tenants can execute the SHOW VARIABLES statement or query the SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE view (Oracle-compatible mode) or the information_schema.GLOBAL_VARIABLES view (MySQL-compatible mode) to view the values of Global system variables.

  • Session level

    sys tenant and all user tenants can execute the SHOW VARIABLES statement or query the SYS.TENANT_VIRTUAL_SESSION_VARIABLE view (Oracle-compatible mode) or the information_schema.SESSION_VARIABLES view (MySQL-compatible mode) to view the values of Session system variables.

• Modify variables

  • sys tenant can directly modify the values of Global system variables.

  • MySQL user tenants must have the SUPER or ALTER SYSTEM privilege to modify the values of Global system variables.

  • Oracle user tenants must have the ALTER SYSTEM privilege to modify the values of Global system variables.

Attributes

Examples

Set the maximum number of connections that a single user can establish with an OBServer node to be unlimited.

obclient> SET GLOBAL max_user_connections =0;