Example about tis post:

SQL> select index_name, last_analyzed from user_indexes where table_name = 'EMPS';
INDEX_NAME LAST_ANAL
------------------------------ ---------
EMPS_PK 16-AUG-02
IDX_DEP_ID_EMP 16-AUG-02
IDX_FIRST_NAME 16-AUG-02
IDX_JOB_ID_EMP 16-AUG-02
IDX_U_LAST_NAME 16-AUG-02

SQL> analyze table emps delete statistics;
SQL> select index_name, last_analyzed from user_indexes where table_name = 'EMPS';

INDEX_NAME LAST_ANAL
------------------------------ ---------
EMPS_PK
IDX_DEP_ID_EMP
IDX_FIRST_NAME
IDX_JOB_ID_EMP
IDX_U_LAST_NAME

SQL> analyze table emps compute statistics;

Table analyzed.
SQL> select index_name, last_analyzed from user_indexes where table_name = 'EMPS';

INDEX_NAME LAST_ANAL
------------------------------ ---------
EMPS_PK 16-AUG-02
IDX_DEP_ID_EMP 16-AUG-02
IDX_FIRST_NAME 16-AUG-02
IDX_JOB_ID_EMP 16-AUG-02
IDX_U_LAST_NAME 16-AUG-02