Try this little query: Number of Log Files per Hour (Oracle 8i)
select to_char(first_time,'YYYY-MM-DD Month (Day)') day, to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'00',1,0)),'9999') "00:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'01',1,0)),'9999') "01:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'02',1,0)),'9999') "02:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'03',1,0)),'9999') "03:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'04',1,0)),'9999') "04:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'05',1,0)),'9999') "05:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'06',1,0)),'9999') "06:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'07',1,0)),'9999') "07:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'08',1,0)),'9999') "08:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'09',1,0)),'9999') "09:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'10',1,0)),'9999') "10:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'11',1,0)),'9999') "11:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'12',1,0)),'9999') "12:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'13',1,0)),'9999') "13:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'14',1,0)),'9999') "14:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'15',1,0)),'9999') "15:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'16',1,0)),'9999') "16:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'17',1,0)),'9999') "17:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'18',1,0)),'9999') "18:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'19',1,0)),'9999') "19:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'20',1,0)),'9999') "20:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'21',1,0)),'9999') "21:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'22',1,0)),'9999') "22:00", to_char(sum(decode(substr(to_char(first_time,'hh24'),1,2),'23',1,0)),'9999') "23:00" from v$log_history group by to_char(first_time,'YYYY-MM-DD Month (Day)') order by to_char(first_time,'YYYY-MM-DD Month (Day)') / Regards, Patrice Boivin Systems Analyst (Oracle Certified DBA) Systems Admin & Operations | Admin. et Exploit. des systèmes Technology Services | Services technologiques Informatics Branch | Direction de l'informatique Maritimes Region, DFO | Région des Maritimes, MPO E-Mail: [EMAIL PROTECTED] -----Original Message----- Sent: Wednesday, August 14, 2002 9:09 AM To: Multiple recipients of list ORACLE-L Subject: Amount of redo Hi List, I want to put my databse in archive mode(Presently it is non archive mode).I want to estimate space that will be required for archive log taking we will be keeping one week archive on disk. How can i find out amount of redo generated in a week. Regards Pawan Dalmia Extn -5259 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Pawan Dalmia INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Boivin, Patrice J INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
