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  • 查看表空间的增长情况

    --查询前一周表空间增长情况
    SELECT C.TABLESPACE_NAME,
    D."Total(MB)",
    D."Used(MB)" - C."Used(MB)" AS "Increment(MB)",
    TO_CHAR(NEXT_DAY(TRUNC(SYSDATE), 2) - 7, 'yyyy/mm/dd') || '--' ||
    TO_CHAR(NEXT_DAY(TRUNC(SYSDATE), 2) - 7, 'yyyy/mm/dd') "TIME"
    FROM (SELECT B.NAME TABLESPACE_NAME,
    CASE
    WHEN B.NAME NOT LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024)
    WHEN B.NAME LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024 / 2)
    END AS "Total(MB)",
    ROUND(A.TABLESPACE_USEDSIZE * 8 / 1024) "Used(MB)",
    A.RTIME
    FROM DBA_HIST_TBSPC_SPACE_USAGE A, V$TABLESPACE B
    WHERE A.TABLESPACE_ID = B.TS#
    AND TO_CHAR(TO_DATE(REPLACE(RTIME, '/', NULL),
    'mmddyyyy hh24:mi:ss'),
    'yyyymmdd hh24:mi') =
    TO_CHAR(NEXT_DAY(TRUNC(SYSDATE), 2) - 14, 'yyyymmdd hh24:mi')) C,
    (SELECT B.NAME TABLESPACE_NAME,
    CASE
    WHEN B.NAME NOT LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024)
    WHEN B.NAME LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024 / 2)
    END AS "Total(MB)",
    ROUND(A.TABLESPACE_USEDSIZE * 8 / 1024) "Used(MB)",
    A.RTIME
    FROM DBA_HIST_TBSPC_SPACE_USAGE A, V$TABLESPACE B
    WHERE A.TABLESPACE_ID = B.TS#
    AND TO_CHAR(TO_DATE(REPLACE(RTIME, '/', NULL),
    'mmddyyyy hh24:mi:ss'),
    'yyyymmdd hh24:mi') =
    TO_CHAR(NEXT_DAY(TRUNC(SYSDATE), 2) - 7, 'yyyymmdd hh24:mi')) D
    WHERE C.TABLESPACE_NAME = D.TABLESPACE_NAME;

    --查询前一天表空间增长情况

    SELECT C.TABLESPACE_NAME,
    D."Total(MB)",
    D."Used(MB)" - C."Used(MB)" AS "Increment(MB)",
    TO_CHAR(TRUNC(SYSDATE - 1), 'yyyy/mm/dd') "TIME"
    FROM (SELECT B.NAME TABLESPACE_NAME,
    CASE
    WHEN B.NAME NOT LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024)
    WHEN B.NAME LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024 / 2)
    END AS "Total(MB)",
    ROUND(A.TABLESPACE_USEDSIZE * 8 / 1024) "Used(MB)",
    A.RTIME
    FROM DBA_HIST_TBSPC_SPACE_USAGE A, V$TABLESPACE B
    WHERE A.TABLESPACE_ID = B.TS#
    AND TO_CHAR(TO_DATE(REPLACE(RTIME, '/', NULL),
    'mmddyyyy hh24:mi:ss'),
    'yyyymmdd hh24:mi') =
    TO_CHAR(TRUNC(SYSDATE - 1), 'yyyymmdd hh24:mi')) C,
    (SELECT B.NAME TABLESPACE_NAME,
    CASE
    WHEN B.NAME NOT LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024)
    WHEN B.NAME LIKE 'UNDO%' THEN
    ROUND(A.TABLESPACE_SIZE * 8 / 1024 / 2)
    END AS "Total(MB)",
    ROUND(A.TABLESPACE_USEDSIZE * 8 / 1024) "Used(MB)",
    A.RTIME
    FROM DBA_HIST_TBSPC_SPACE_USAGE A, V$TABLESPACE B
    WHERE A.TABLESPACE_ID = B.TS#
    AND TO_CHAR(TO_DATE(REPLACE(RTIME, '/', NULL),
    'mmddyyyy hh24:mi:ss'),
    'yyyymmdd hh24:mi') =
    TO_CHAR(TRUNC(SYSDATE), 'yyyymmdd hh24:mi')) D
    WHERE C.TABLESPACE_NAME = D.TABLESPACE_NAME;
    --在得知哪个表空间增长明显的情况下,再去查询该表空间的对象大小情况,TABLESPACE_NAME为某表空间名称
    SELECT OWNER, SEGMENT_NAME, SEGMENT_TYPE, BYTES / 1024 / 1024 / 1024 GB
    FROM DBA_SEGMENTS
    WHERE TABLESPACE_NAME ='&TABLESPACE_NAME'
    ORDER BY BYTES DESC;

    SELECT *
    FROM (SELECT OWNER,
    SEGMENT_NAME,
    SEGMENT_TYPE,
    BYTES / 1024 / 1024 / 1024 GB
    FROM DBA_SEGMENTS
    WHERE TABLESPACE_NAME ='&TABLESPACE_NAME'
    ORDER BY BYTES DESC)
    WHERE ROWNUM < 30;
    --如何确定某些对象容量增涨快,需要一定时间的跟踪,周期性查询该对象的容量。然后根据对象做相应后续处理。

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  • 原文地址:https://www.cnblogs.com/ritchy/p/10937902.html
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