SELECT CASE
WHEN TRUNC (sysdate, 'mm') = TRUNC (sysdate)
OR TO_CHAR (TRUNC (sysdate, 'mm'), 'IW') =TO_CHAR (TRUNC (sysdate), 'IW')
THEN 1
ELSE TO_CHAR (TRUNC (sysdate), 'IW') - TO_CHAR (TRUNC (sysdate, 'mm'), 'IW' ) + 1
END num
FROM DUAL
create or replace view redo_size
as
select value
from v$mystat, v$statname
where v$mystat.statistic# = v$statname.statistic#
and v$statname.name = 'redo size';
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/24217871/viewspace-674534/ ，如需转载，请注明出处，否则将追究法律责任。
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