A "switch logfile" isn't mandatory and an "archive log current" is highly recommended. The "switch logfile" command would return immdiately and would not wait for the archiver to complete archiving the log. The "archive log current" would return only after the archiver has completed it's job. You must backup the archivelogs from the first one generated after the first "alter tablespace begin backup" to the first one after the last "alter tablespace end backup". You are also backing up the controlfile which is also highly recommended.
I normally use a combination of multiple "switch logfile", "archive log" commands and
a Unix "sleep" command and then exclude the last archivelog from the backup
just to be safe.
Hemant
At 06:14 AM 19-03-03 -0800, you wrote:
In my hot backup script, should I be using "alter system archive log current;" instead of "alter system switch logfile;"?
At present this is what I am doing:
For each tablespace:
sqlplus internal << EOF alter tablespace ERGO_USR begin backup; exit EOF # cp $DIR3/ERGO_USR.dbf $BACKUP_DIR$DIR3 # sqlplus internal << EOF alter tablespace ERGO_USR end backup; alter system switch logfile; exit EOF
For the last tablespace:
sqlplus internal << EOF alter tablespace USERS begin backup; exit EOF # cp $DIR1/users01.dbf $BACKUP_DIR$DIR1 # sqlplus internal << EOF alter tablespace USERS end backup; alter database backup controlfile to '$BACKUP_DIR$DIR1/control01.bak'; alter system switch logfile; exit EOF #
Thanks, Peter Schauss Northrop Grumman Corporation -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Schauss, Peter INET: [EMAIL PROTECTED]
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Hemant K Chitale My personal web site is : http://hkchital.tripod.com
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