OPS raw device backup
OS - AIX 4.3.2
DB - 8.1.5 OPS
Our Oracle Consultant have created backup scripts for OPS raw
devices, and i'm trying to study and understand it. We have a large
DB (around 600Gb) so he is compressing the file before transferring
to DLT tapes. A line in the script that backup the raw device looked
dd if=/dev/rlvlg001p01 bs=4k skip=1 | compress > lg001p01.Z
I understand that "dd" command syntax has "if" for input and "of"
for output. So I assumed that the "of" was substituted by the
"| compress ". Unfortunately, I can't find his scripts for restoring
the backup files. And I was tasked by my boss to check, test
our backup by restoring it to development server.
I tried restoring the files by reverting the command like:
uncompress lg001p01.Z > | dd of=/dev/rlvg001p01 seek=1 bs=4k
but it did not work. Has anybody made similar procedure in
backing up raw devices?
uncompress needs to go to std out. (">" is used to redirect std out, uncompress does not write to std out by default, use -c)
uncompress -c lg001p01.Z | dd of=/dev/rlvg001p01 seek=1 bs=4k
dd command for hot backup is very slow.
BMC's SQLBACKTRACK is really very fast. Buy it, Use it. Your life will be smooth.
try rman, it backups up our 70gb db in 8 minutes to disk, we keeo a copy on disk for 24 hours and then archive it to tape
I'm stmontgo and I approve of this message
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