Hi Andre.. Thanks for reply...
This is live ENV and I am not much aware of Reindexing .. So my question is .. will this process make any king of effect on Data or anything....
And please correct me if you are not talking about this process ....System Administration -> Periodic -> Database -> 'SQL administration', then clicking 'Index actions' and selecting 'Reindex' (see Figure 1 below)
One more thing.. How much time it will take...