binlog_row_image

Description

binlog_row_image specifies whether to record full column logs.

Privilege requirements

• Query variables

  • Global level

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

  • Session level

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

• Modify variables

  • Global level

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

    • A MySQL user tenant must have the SUPER or ALTER SYSTEM privilege to modify the value of global system variables.

    • An Oracle user tenant must have the ALTER SYSTEM privilege to modify the value of global system variables.

  • Session level

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

Attributes

Usage notes

• Full column logs record the new and old values of all columns in Update/Delete statements on OBServer nodes. Non-full column logs record only the new values.

• After you execute the SET GLOBAL binlog_row_image= 'xxx' statement to modify the variable, the change does not take effect on any existing session, including the session that initiated the modification.

Examples

• Set the value of the binlog_row_image variable to record all columns.

• Global level

  obclient> SET GLOBAL binlog_row_image=FULL;
  

• Session level

  obclient> SET binlog_row_image=FULL;