In a DBA’s routine, we perform thousands of command every day. Sometimes it also happens we don’t know the post-impact of the command.

Then, Oracle 12c Comes up with very powerful feature WHAT IF EVALUATION.

It shows us the impact of command without actually performing it. So with help of this our life can become easier, first perform an evaluation of command you want to actually apply to your production.

We can use eval and predict with CRSCTL[Cluster Control] and SRVCTL[Server Control].

Let us understand each one with a simple example :

  1. Use of eval in CRSCTL
  2. Use of Predict in SRVCTL
    Syntax

    Example

Stay tuned for More articles on Oracle RAC

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