SQL>
SQL> create table indextest as select * from dba_objects
2 where owner in ('OUTLN','PUBLIC','SCOTT','SYS','SYSTEM');
Table created.
SQL>
SQL>
SQL> create index indxtest_objname_idx
2 on indextest (object_name)
3 pctfree 0;
Index created.
SQL>
SQL> analyze table indextest compute statistics;
Table analyzed.
SQL>
SQL> analyze index indxtest_objname_idx validate structure;
Index analyzed.
SQL>
SQL> select name, height, lf_blks, pct_used
2 from index_stats;
NAME HEIGHT LF_BLKS PCT_USED
------------------------------ ---------- ---------- ----------
INDXTEST_OBJNAME_IDX 2 36 97
SQL>
SQL>
SQL> insert into indextest (owner, object_name)
2 values ('a','a');
1 row created.
SQL>
SQL> commit;
Commit complete.
SQL>
SQL> analyze index indxtest_objname_idx validate structure;
Index analyzed.
SQL>
SQL>
SQL> select name, height, lf_blks, pct_used
2 from index_stats;
NAME HEIGHT LF_BLKS PCT_USED
------------------------------ ---------- ---------- ----------
INDXTEST_OBJNAME_IDX 2 36 97
SQL>
SQL> insert into indextest (owner, object_name) values ('ZZZZZ','_ZZZZZZZZZZZ');
1 row created.
SQL>
SQL> commit;
Commit complete.
SQL>
SQL>
SQL> analyze index indxtest_objname_idx validate structure;
Index analyzed.
SQL>
SQL>
SQL> select name, height, lf_blks, pct_used
2 from index_stats;
NAME HEIGHT LF_BLKS PCT_USED
------------------------------ ---------- ---------- ----------
INDXTEST_OBJNAME_IDX 2 36 97
SQL>
SQL> alter index indxtest_objname_idx rebuild pctfree 10;
Index altered.
SQL>
SQL> analyze index indxtest_objname_idx validate structure;
Index analyzed.
SQL>
SQL> drop table indextest;
Table dropped.
SQL>
SQL>