character_set_server

Description

character_set_server specifies the server character set.

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 value 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 value of session system variables.

• Modify variables

  • Global level

    • sys tenant can directly modify the value of global system variables.

    • MySQL user tenants need to have the SUPER or ALTER SYSTEM privilege to modify the value of global system variables.

    • Oracle user tenants need to have the ALTER SYSTEM privilege to modify the value of global system variables.

  • Session level

    sys tenant and all user tenants can directly modify the value of session system variables.

Attributes

Examples

Set the server character set to utf8mb4.

• Global level

  obclient> SET GLOBAL  ='utf8mb4';
  

• Session level

  obclient> SET  ='utf8mb4';