|
Rob
(Jo?),
This
is from the Oracle8i docs (Chapter 5 of "Oracle8i Standby Database Concepts and
Administration"), but it's so basic that I believe it would apply to
8.0
...
9.Write a script that you can periodically run to check
the log files in the managed recovery directory and
move
the log files that have a specified timestamp to the manual recovery directory. If new redo logs are being moved, start the manual recovery mode and apply the newly moved redo logs.
The following PERL script performs what is outlined in this step:
#!/usr/local/bin/perl
#How many hours the standby database should lag behind the primary
database
$LAG_HOUR = 4;
#The manual recovery
directory
$DEST_DIR = '/fs2/oracle/stdby/';
#The flag for whether there are new logs to be
applied.
$needApply = 0;
#Check the managed recovery
directory
while ( </fs2/oracle/stby_log/*.arc> ) { # Get the timestamp of the file $file_time = (stat($_))[9]; # See if the file is "old enough" if ( time-$file_time > $LAG_HOUR*60*60 ) { print "mv $_ $DEST_DIR\n"; system "mv $_ $DEST_DIR"; $needApply = 1; } } #If redo logs were moved in this round, apply them if ( $needApply == 1 ) { system "/usr/Lagged_Standby/ApplyLog"; }
The SHELL script (/usr/Lagged_Standby/ApplyLog) used to apply the redo logs
consists of the following:
sqlplus internal << EOF
recover automatic standby
database;
cancel exit
EOF
10.Refer to your platform-specific documentation for information on how to create a job that is triggered at specific times throughout the day.
For example, in UNIX, you can write a CRON job file. Issue the man crontab
command at the UNIX
command shell to get help on how to write a CRON job file. ... Jack
--------------------------------
|
- Auto log apply to standby db using Perl Jo King
- Jack C. Applewhite
