Oracle 21c

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create table your_table as
SELECT 11 ID, to_date('2021-03-06 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-07 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 3879 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-08 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 3879 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-09 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 3879 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-10 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-11 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-12 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-13 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-14 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-15 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-16 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-17 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-18 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-19 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-20 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-21 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1344 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-22 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-23 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-24 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-25 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-26 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-27 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-28 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-29 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-30 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-03-31 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-04-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1549 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-04-02 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1549 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-04-03 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 1549 oe FROM dual UNION ALL
SELECT 11 ID, to_date('2021-04-04 00:00:00', 'yyyy-mm-dd hh24:mi:ss') dt, 2926 oe FROM dual;
30 rows affected

SELECT id,
       MIN(dt) AS mind,
       MAX(dt) AS maxd,
       oe
FROM   your_table
GROUP BY id,
         oe
ORDER BY mind DESC;


ID
MIND
MAXD
OE


11
01-APR-21
03-APR-21
1549

11
16-MAR-21
21-MAR-21
1344

11
07-MAR-21
09-MAR-21
3879

11
06-MAR-21
04-APR-21
2926


SELECT id,
       MIN(dt) AS mind,
       MAX(dt) AS maxd,
       oe
FROM   (SELECT id,
               dt,
               oe,
               row_number() OVER (PARTITION BY ID ORDER BY dt) - row_number() OVER (PARTITION BY ID, oe ORDER BY dt) grp
        FROM   your_table)
GROUP  BY id,
          oe,
          grp
ORDER  BY mind DESC;


ID
MIND
MAXD
OE


11
04-APR-21
04-APR-21
2926

11
01-APR-21
03-APR-21
1549

11
22-MAR-21
31-MAR-21
2926

11
16-MAR-21
21-MAR-21
1344

11
10-MAR-21
15-MAR-21
2926

11
07-MAR-21
09-MAR-21
3879

11
06-MAR-21
06-MAR-21
2926
ID	MIND	MAXD	OE
11	01-APR-21	03-APR-21	1549
11	16-MAR-21	21-MAR-21	1344
11	07-MAR-21	09-MAR-21	3879
11	06-MAR-21	04-APR-21	2926