Shoumadip Das, Author at Shoumadip Das - Page 7 of 7

Author: Shoumadip Das

Understanding-Invisible-Index

Understanding INVISIBLE Index

By default an index is VISIBLE.The Oracle optimizer will pick only VISIBLE index. Oracle 11g allows indexes to be marked…

Understanding UNUSABLE Index

By default an index is USABLE.The Oracle optimizer will pick only USABLE index. Oracle indexes can go into a UNUSABLE…