Archive Log Statastics

select * from V$LOG_HISTORY

select * from V$ARCHIVE_DEST


select trunc(COMPLETION_TIME) TIME, SUM(BLOCKS * BLOCK_SIZE)/1024/1024 SIZE_MB from V$ARCHIVED_LOG group by trunc (COMPLETION_TIME) order by 1;


select trunc(COMPLETION_TIME) TIME, SUM(BLOCKS * BLOCK_SIZE)/1024/1024 SIZE_MB from V$ARCHIVED_LOG group by trunc (COMPLETION_TIME) order by 1;

select trunc(COMPLETION_TIME,'HH24') TIME, SUM(BLOCKS * BLOCK_SIZE)/1024/1024 SIZE_MB from V$ARCHIVED_LOG group by trunc (COMPLETION_TIME,'HH24') order by 1;

SELECT TRUNC(COMPLETION_TIME) ARCHIVED_DATE,
           SUM(BLOCKS * BLOCK_SIZE) / 1024 / 1024 SIZE_IN_MB
      FROM V$ARCHIVED_LOG
     GROUP BY TRUNC(COMPLETION_TIME)
     ORDER BY 1;



select sum((blocks*block_size)/(1024*1024))SIZEinMB,sequence#,name
from v$archived_log
group by sequence#,name
order by sequence#


SELECT trunc(first_time) DAY,
     count(*) NB_SWITCHS,
     trunc(count(*)*log_size/1024) TOTAL_SIZE_KB,
     to_char(count(*)/24,'9999.9') AVG_SWITCHS_PER_HOUR
FROM v$loghist,(select avg(bytes) log_size from v$log)
GROUP BY trunc(first_time),log_size
/


-- Size of the archive log files each hour
alter session set nls_date_format = 'YYYY-MM-DD HH24';

SELECT TRUNC(COMPLETION_TIME, 'HH') ARCHIVED_DATE_HOUR,
            SUM(BLOCKS * BLOCK_SIZE) / 1024 / 1024 SIZE_IN_MB
       FROM V$ARCHIVED_LOG
      GROUP BY TRUNC(COMPLETION_TIME, 'HH')
      ORDER BY 1;


SELECT
            TRUNC(COMPLETION_TIME) ARCHIVED_DATE,
            THREAD#,
            SUM(BLOCKS * BLOCK_SIZE) / 1024 / 1024 SIZE_IN_MB
       FROM V$ARCHIVED_LOG
      GROUP BY TRUNC(COMPLETION_TIME), THREAD#
      ORDER BY 1, 2;
     
     
     

-- per day the volume in MBytes of archived logs generated
SELECT SUM_ARCH.DAY,
         SUM_ARCH.GENERATED_MB,
         SUM_ARCH_DEL.DELETED_MB,
         SUM_ARCH.GENERATED_MB - SUM_ARCH_DEL.DELETED_MB "REMAINING_MB"
    FROM (  SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
                   SUM (ROUND ( (blocks * block_size) / (1024 * 1024), 2))
                      GENERATED_MB
              FROM V$ARCHIVED_LOG
             WHERE ARCHIVED = 'YES'
          GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')) SUM_ARCH,
         (  SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
                   SUM (ROUND ( (blocks * block_size) / (1024 * 1024), 2))
                      DELETED_MB
              FROM V$ARCHIVED_LOG
             WHERE ARCHIVED = 'YES' AND DELETED = 'YES'
          GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')) SUM_ARCH_DEL
   WHERE SUM_ARCH.DAY = SUM_ARCH_DEL.DAY(+)
ORDER BY TO_DATE (DAY, 'DD/MM/YYYY');


-- display the number of archived logs generated per hour per day:

---number of archived logs generated per hour per day

SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '00', 1, NULL))
            "00-01",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '01', 1, NULL))
            "01-02",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '02', 1, NULL))
            "02-03",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '03', 1, NULL))
            "03-04",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '04', 1, NULL))
            "04-05",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '05', 1, NULL))
            "05-06",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '06', 1, NULL))
            "06-07",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '07', 1, NULL))
            "07-08",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '08', 1, NULL))
            "08-09",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '09', 1, NULL))
            "09-10",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '10', 1, NULL))
            "10-11",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '11', 1, NULL))
            "11-12",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '12', 1, NULL))
            "12-13",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '13', 1, NULL))
            "13-14",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '14', 1, NULL))
            "14-15",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '15', 1, NULL))
            "15-16",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '16', 1, NULL))
            "16-17",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '17', 1, NULL))
            "17-18",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '18', 1, NULL))
            "18-19",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '19', 1, NULL))
            "19-20",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '20', 1, NULL))
            "20-21",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '21', 1, NULL))
            "21-22",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '22', 1, NULL))
            "22-23",
         SUM (DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '23', 1, NULL))
            "23-00",
         COUNT (*) TOTAL
    FROM V$ARCHIVED_LOG
WHERE ARCHIVED='YES'
GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')
ORDER BY TO_DATE (DAY, 'DD/MM/YYYY');



-- Combination of these scripts is:

SELECT LOG_HISTORY.*,
         SUM_ARCH.GENERATED_MB,
         SUM_ARCH_DEL.DELETED_MB,
         SUM_ARCH.GENERATED_MB - SUM_ARCH_DEL.DELETED_MB "REMAINING_MB"
    FROM (  SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '00', 1, NULL))
                      "00-01",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '01', 1, NULL))
                      "01-02",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '02', 1, NULL))
                      "02-03",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '03', 1, NULL))
                      "03-04",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '04', 1, NULL))
                      "04-05",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '05', 1, NULL))
                      "05-06",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '06', 1, NULL))
                      "06-07",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '07', 1, NULL))
                      "07-08",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '08', 1, NULL))
                      "08-09",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '09', 1, NULL))
                      "09-10",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '10', 1, NULL))
                      "10-11",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '11', 1, NULL))
                      "11-12",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '12', 1, NULL))
                      "12-13",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '13', 1, NULL))
                      "13-14",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '14', 1, NULL))
                      "14-15",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '15', 1, NULL))
                      "15-16",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '16', 1, NULL))
                      "16-17",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '17', 1, NULL))
                      "17-18",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '18', 1, NULL))
                      "18-19",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '19', 1, NULL))
                      "19-20",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '20', 1, NULL))
                      "20-21",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '21', 1, NULL))
                      "21-22",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '22', 1, NULL))
                      "22-23",
                   SUM (
                      DECODE (TO_CHAR (COMPLETION_TIME, 'HH24'), '23', 1, NULL))
                      "23-00",
                   COUNT (*) TOTAL
              FROM V$ARCHIVED_LOG
             WHERE ARCHIVED = 'YES'
          GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')) LOG_HISTORY,
         (  SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
                   SUM (ROUND ( (blocks * block_size) / (1024 * 1024), 2))
                      GENERATED_MB
              FROM V$ARCHIVED_LOG
             WHERE ARCHIVED = 'YES'
          GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')) SUM_ARCH,
         (  SELECT TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY') DAY,
                   SUM (ROUND ( (blocks * block_size) / (1024 * 1024), 2))
                      DELETED_MB
              FROM V$ARCHIVED_LOG
             WHERE ARCHIVED = 'YES' AND DELETED = 'YES'
          GROUP BY TO_CHAR (COMPLETION_TIME, 'DD/MM/YYYY')) SUM_ARCH_DEL
   WHERE LOG_HISTORY.DAY = SUM_ARCH.DAY AND SUM_ARCH.DAY = SUM_ARCH_DEL.DAY(+)
ORDER BY TO_DATE (LOG_HISTORY.DAY, 'DD/MM/YYYY');