binlog_row_image

Description

binlog_row_image specifies whether to record all column values.

Privilege requirements

• Query variables

  • Global level

    sys and all user tenants can view the values of Global system variables by executing the SHOW VARIABLES statement, or querying the SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE view (Oracle mode) or the information_schema.GLOBAL_VARIABLES view (MySQL mode).

  • Session level

    sys and all user tenants can view the values of Session system variables by executing the SHOW VARIABLES statement, or querying the SYS.TENANT_VIRTUAL_SESSION_VARIABLE view (Oracle mode) or the information_schema.SESSION_VARIABLES view (MySQL mode).

• Modify variables

  • Global level

    • sys tenants can modify the value of a Global system variable directly.

    • MySQL user tenants need to have the SUPER or ALTER SYSTEM privilege to modify the value of a Global system variable.

    • Oracle user tenants need to have the ALTER SYSTEM privilege to modify the value of a Global system variable.

  • Session level

    sys and all user tenants can modify the value of a Session system variable directly.

Attributes

Considerations

• Full-row image means that an OBServer node records all column values (both the old and new values) for each statement of the UPDATE or DELETE type. In the non-full-row image, only the new values are recorded.

• The modified variable takes effect only for new sessions, not for existing sessions, including the session in which you modified the variable.

Examples

• Set the value to FULL to record all columns.

• Global level

  obclient> SET GLOBAL binlog_row_image=FULL;
  

• Session level

  obclient> SET binlog_row_image=FULL;