RE: Unix Administrator stikes again
Posted in 2000
onbar -r dbspaceX should recover the "down" dbspace to a "current" state.This appears to be what you want!
The "Point in time" restore refers to an arbitrary date/time, such as noon
yesterday.
The onbar utility will not allow you to restore some, but not all, dbspaces,
to a specific date/time. Such a restore requires that all
dbspaces be restored in order to maintain consistency and integrity.
I.E. You would NOT most dbspaces to be current as of today
and others to contain yesterday's version. This could cause
insconsistencies. Gor that reason a "point in time" restore
(to yesterday's version of the database) is only supported for a
restore of all dbspaces.
I hope this clarifies your options.
-----Original Message-----
From: Geoffrey Poole
To: informix-list@iiug.org
Sent: 1/29/00 3:26 AM
Subject: Unix Administrator stikes again
The Unix administator has just ruined my Saturday (familiar story ?).
We were replacing 4GB disks with 18GB, I marked the chunks on the disks
to
be removed as DOWN, relying on the mirror to recover later. But one
wrong
disk was removed and now I have 2 chunks on the same dbspace with both
primary and mirror (which failed sanity checks) marked as DOWN.
I know Informix can log on and "fix" the chunk state, but this is the
weekend ..
I intend running "onbar -r dbspaceX" to restore just the effected
dbspace.
The manual states that you can not restore an indiviual dbspace to a
point
in time, so my question is what of data consistency ? There was very
little
if no database activity since the last Level 0 but I can not be sure. Is
a
full level 0 my only "safe" action ?
Hardware: Sun E450 x 4CPUs
OpSys: Solaris 2.6 (SunOS 5.6)
Informix Products: Universal Server 9.14.UC2 + WebBlade 3.31.UC2
------------------
Geoff Poole
Informix Database Administrator
geoffrey.poole@ogs.co.uk
Oxford GlycoSciences (U.K) Ltd,