SELECT INDEX_NAME,
PARTITION_NAME,
TABLESPACE_NAME,
INITIAL_EXTENT,
NEXT_EXTENT,
PCT_INCREASE,
NUM_ROWS
FROM DBA_IND_PARTITIONS
WHERE INDEX_NAME = decode(upper('my_index'), 'ALL', INDEX_NAME, upper('my_index'))
AND INDEX_OWNER = upper('my_owner')
ORDER BY INDEX_NAME, PARTITION_NAME;