RDBMS: 11Gr2
I've created a new table with two new indexes:
create table drop_me (col1 number, col2 number);
CREATE INDEX INDEX1 ON DROP_ME (COL1, COL2);
CREATE INDEX INDEX2 ON DROP_ME (COL2, COL1);
The difference between the two indexes is the column order.
Is the second index redundant? Could it be useful?