How to move a index from one tablespace to another

How to move index from tablespace to another tablespace online.

SQL>

OWNER                          INDEX_NAME                     TABLESPACE_NAME

------------------------------ ------------------------------ ---------------

SYS                                  TEST_SC                               OLD_INDEX

I want to move TEST_SC which is wrongly created in OLD_INDEX tablespace.  User want to move to NEW_INDEX tablespace,

SQL>alter index <INDEX_NAME> rebuild tablespace <NEW TABLESPACE> PARALLEL NOLOGGING;

SQL>alter index TEST_SC rebuild tablespace NEW_INDEX PARALLEL;

SQL>

OWNER                          INDEX_NAME                     TABLESPACE_NAME

------------------------------ ------------------------------ ---------------

SYS                                  TEST_SC                               NEW_INDEX

User carefully with NOLOGGING option if you have DR. 

If you are moving large index, check in V$SESSION_LONGOPS to see how much it progressed and how long it will take (approx).