Database Administration (MOSC)

MOSC Banner

Difference between index and index rebuild option

edited Jun 27, 2011 3:18AM in Database Administration (MOSC) 5 commentsAnswered
Hi All,

Can someone explain difference between rebuilding an index with rebuild and with rebuild online options in detail?

Here I am not looking for "index rebuild --- users can not do the operations... and index rebuild online -- users can do the DML operation on the table"

I am looking for something more that is happening at the backend of these two operation.

Let me share the understanding I have on this.

INDEX REBUILD
============
    
1. Oracle takes an exclusive lock on this table.
2. Starts building the index in the temp table/temporary space by scanning each row of the table.

Howdy, Stranger!

Log In

To view full details, sign in to My Oracle Support Community.

Register

Don't have a My Oracle Support Community account? Click here to get started.

Category Leaderboard

Top contributors this month

Instructions for posting

×

1. Select a discussion category from the picklist.


2. Enter a title that clearly identifies the subject of your question.


3. In the body, insert detailed information, including Oracle product and version.


Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI).


Cloud / Fusion customers - Our Cloud community has moved! Please go to Cloud Customer Connect .


New to My Oracle Support Community? Visit our Welcome Center

MOSC Help Center