ob_enable_transmission_checksum

Description

ob_enable_transmission_checksum specifies whether to enable checksum for data packets between the Proxy and the server.

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 obtain 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 obtain the values of session system variables.

• Modify variables

  • Global level

    • 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.

  • Session level

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

Attributes

Examples

Enable checksum for data packets between the Proxy and the server.

• Session level

  obclient> SET  ob_enable_transmission_checksum=1;
  

• Global level

  obclient> SET GLOBAL ob_enable_transmission_checksum =1;