QUESTION POSED ON: 09 December 2008
I am rebuilding indexes and constraints on a very large table and need to accomplish this as fast as possible.
If I create a UNIQUE index on this table (4 concatenated not null columns) AND use the alter table command to enforce the primary key, is this totally redundant?
Here are the statements I'm using and the elapsed time it is taking.
1) Create unique index X on X nologging (53 minutes).
2) Alter table X add constraint X primary key (col1, col2, col3) using index (one hour 50 minutes).
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