topic Re: How do you get around uncompressing large files? in Operating System - HP-UX

How do you get around uncompressing large files?

David Heard — Thu, 08 Jan 2004 12:01:07 GMT

oracle dba 1678990689 Jan 8 10:54 dms92_20040107.dmp.

Re: How do you get around uncompressing large files?

Robert-Jan Goossens — Thu, 08 Jan 2004 12:03:33 GMT

David,

I don't understand your question. Do you need to uncompress the file on a different filesystem ?

Regards,
Robert-Jan

Re: How do you get around uncompressing large files?

David Heard — Thu, 08 Jan 2004 12:07:02 GMT

I have a large file and when I try to uncompress it, it runs for about 5 minutes and errors out with file to large error message.

Re: How do you get around uncompressing large files?

Robert-Jan Goossens — Thu, 08 Jan 2004 12:09:25 GMT

Oke,

Your filesystem does not support largefiles.

Check if lragefiles is enabled.

vxfs
# fsadm -F vxfs /your_mount_point

hfs
# fsadm -f hfs /your_mount_point

Robert-Jan

Re: How do you get around uncompressing large files?

Mark Grant — Thu, 08 Jan 2004 12:11:06 GMT

This sounds like you are trying to uncompress the file in a filesystem that does not have largefiles support.

If so, you'll have to set largefiles option with

"fsadm -o largefiles /dev/vg00/rlvol1" or whatever the filesystem is. It should also be mounted with the "-o largefiles" option.

Re: How do you get around uncompressing large files?

David Heard — Thu, 08 Jan 2004 12:15:41 GMT

I do not have online JFS. What are the commands in single user mode

Re: How do you get around uncompressing large files?

Robert-Jan Goossens — Thu, 08 Jan 2004 12:18:06 GMT

No you do not need to be in single user mode.

Umount the filesystem and reenter the fsadm command

# umount /your_mount_point
# fsadm -F vxfs -o largefiles /your_mount_point
# mount /your_mount_point

Re: How do you get around uncompressing large files?

Dave Hutton — Thu, 08 Jan 2004 12:23:42 GMT

Just going down another road. But is there a chance you don't have enough room in the place that your trying to uncompress it? The reason I ask is I'm 90% sure that when you uncompress a file you tend to have 2 files (the compressed one and the one your trying to uncompress) so you really need space in that filesystem to hold 2 files.
Hopefully that makes sense.

Dave

Re: How do you get around uncompressing large files?

Robert-Jan Goossens — Thu, 08 Jan 2004 12:28:28 GMT

Check below,

# umount /app/oracle/dbappl
# fsadm -F vxfs -o largefiles /dev/vg01/rlvol4
# grep /app/oracle/dbappl /etc/fstab
/dev/vg01/lvol4 /app/oracle/dbappl vxfs log,nodatainlog,largefiles,rw,suid 0 2
# mount /app/oracle/dbappl
# fsadm -F vxfs /app/oracle/dbappl
nomultifsets
largefiles

Going home (:-)
Robert-Jan

Re: How do you get around uncompressing large files?

Michael Schulte zur Sur — Thu, 08 Jan 2004 12:41:56 GMT

Hi,

what do want to do with that file, once it is uncompressed, import? If so, you can bypass that by uncompressing and importing via pipe.

greetings,

Michael

Re: How do you get around uncompressing large files?

Todd McDaniel_1 — Thu, 08 Jan 2004 15:25:12 GMT

David/Robert...

fsadm can be done WITHOUT umounting the FS. No need for single user mode either.

fsadm -F vxfs -o largefiles /mount/point/here

Re: How do you get around uncompressing large files?

James Odak — Thu, 08 Jan 2004 15:35:06 GMT

A few things

#1 What version of UX are you running ..its been a while but 10.20 and lower with out JFS changing to largefiles will purge all data from the filesystem .. i could be wrong, there might have been patches to fix that since then

#2 also without JFS you must use the /dev/vgxxx/lvxx with the fsadm command
mount points only work with Online JFS installed

#3 lastly if you are just viewing this file, get some spare diskspace and make a temp filesystem largefile enabled and do not do anything to risk your exisiting oracle data.

Re: How do you get around uncompressing large files?

Robert-Jan Goossens — Fri, 09 Jan 2004 04:15:53 GMT

Todd,

You will need online jvs for that action.

# uname -a
HP-UX 001 B.11.00 U 9000/800 160901517 unlimited-user license
# fsadm -F vxfs /app/oracle/admin
nomultifsets
nolargefiles
# fsadm -F vxfs -o largefiles /app/oracle/admin
fsadm: set feature (LARGEFILES) failed, errno 25

Kind regards,
Robert-Jan