where to find info on the function index according to

Hello

With the help of Oracle 11.2, can someone tell me where I can find information about existing indexes to function in my database?

I want to shrink the unused space on a table, but there is an index FB I have to drop in order to shrink the space.
Then I need to recreate it after that I have shrink space.
But how do I know what the index is created to be used for functions?

I've looked dba_indexes and dba_ind_expressions with no luck.
I see the index, but I don't see what functions are which are applied for the FB index.


Thanks in advance.

958713 wrote:

select OWNER, INDEX_NAME, INDEX_TYPE, TABLE_OWNER, TABLE_NAME
from dba_indexes where index_name = 'TQR1_C3';

OWNER      INDEX_NAME INDEX_TYPE                  TABLE_OWNER  TABLE_NAME
---------- ---------- --------------------------- ------------ ----------
TQ         TQR1_C3    FUNCTION-BASED NORMAL       TQ           TQR1

Now, let's view the selection of dba_ind_expressions...

INDEX_OWNER  INDEX_NAME TABLE_OWNER  TABLE_NAME COLUMN_EXPRESSI COLUMN_POSITION
------------ ---------- ------------ ---------- --------------- ---------------
TQ           TQR1_C3    TQ           TQR1       "C3"                          1

If you have a top-down column in an index the index is reported "based on a normal function", but the expression simply contains the name of the column without mentioning the bit downward. So one possibility is that your index finger is (descendant of c3).

Concerning
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