Null values in a column are neither zeros nor spaces, although they appear to be spaces since the field is blank. Technically, null values are low values or Hexadecimal zeros.
So, how do you know if...
I have heard many times from many DBAs that when a data block corruption happen in a disk which is part of a Diskgroup using normal redundancy, only the mirror block will take care of the coming datab...
Introduction
In many companies there is a clear separation of duties for various Oracle Database related tasks such as administering ASM and backing up/restoring Oracle databases.
In the past, DBAs us...