checkpoint in multiple tapes

checkpoint in multiple tapes

Post by Giovanni Franzes » Fri, 02 Jun 2000 04:00:00



Hi all,
I have a problem with checkpoint command.
I usually run ingres backup by "checkpoint" on a Compaq library (TZ887).
This library contains 7 tapes of 20/40 (native/compress) GByte.
One tape is no more enough .....it is necessary more then one tape (60
GB is the attual size of my backup on disk). The library can switch to
an other tape but the checkpoint command doesn't wait for, so the
operation doesn't work well.

Is it possibile to anable (with some parameters or option) the
checkpoint command for waiting for tape switching??
How can I handle a checkpoint on multiple tape?

Thank you.

Best Regards

 
 
 

checkpoint in multiple tapes

Post by Gary Hansfor » Sat, 03 Jun 2000 04:00:00


Giovanni

Can you give us some idea of the operating system you are using here.
VMS/Tru64 (Aka Compaq) or something else ?



Quote:> Hi all,
> I have a problem with checkpoint command.
> I usually run ingres backup by "checkpoint" on a Compaq library
(TZ887).
> This library contains 7 tapes of 20/40 (native/compress) GByte.
> One tape is no more enough .....it is necessary more then one tape (60
> GB is the attual size of my backup on disk). The library can switch to
> an other tape but the checkpoint command doesn't wait for, so the
> operation doesn't work well.

> Is it possibile to anable (with some parameters or option) the
> checkpoint command for waiting for tape switching??
> How can I handle a checkpoint on multiple tape?

> Thank you.

> Best Regards

Sent via Deja.com http://www.deja.com/
Before you buy.

 
 
 

checkpoint in multiple tapes

Post by Rick Elferin » Tue, 06 Jun 2000 04:00:00


You can try to edit the $II_INGRES/files/cktmpl.def file.

Rick Elferink


Quote:> Hi all,
> I have a problem with checkpoint command.
> I usually run ingres backup by "checkpoint" on a Compaq library (TZ887).
> This library contains 7 tapes of 20/40 (native/compress) GByte.
> One tape is no more enough .....it is necessary more then one tape (60
> GB is the attual size of my backup on disk). The library can switch to
> an other tape but the checkpoint command doesn't wait for, so the
> operation doesn't work well.

> Is it possibile to anable (with some parameters or option) the
> checkpoint command for waiting for tape switching??
> How can I handle a checkpoint on multiple tape?

> Thank you.

> Best Regards

 
 
 

checkpoint in multiple tapes

Post by Giovanni Franzes » Tue, 06 Jun 2000 04:00:00


I'm new in Ingres. Plase, can you explain to me how to enable multi-tape
backup by cktmpl.def file?

> You can try to edit the $II_INGRES/files/cktmpl.def file.

> Rick Elferink



> > Hi all,
> > I have a problem with checkpoint command.
> > I usually run ingres backup by "checkpoint" on a Compaq library (TZ887).
> > This library contains 7 tapes of 20/40 (native/compress) GByte.
> > One tape is no more enough .....it is necessary more then one tape (60
> > GB is the attual size of my backup on disk). The library can switch to
> > an other tape but the checkpoint command doesn't wait for, so the
> > operation doesn't work well.

> > Is it possibile to anable (with some parameters or option) the
> > checkpoint command for waiting for tape switching??
> > How can I handle a checkpoint on multiple tape?

> > Thank you.

> > Best Regards

 
 
 

checkpoint in multiple tapes

Post by Giovanni Franzes » Tue, 06 Jun 2000 04:00:00


Hi Colin, Hi all,
about O.S,. it is a OpenVMS (one of last version...)
Ingres is in 6.3 release (I don't know patch version)
HW: It's a cluster of 3 machine; 1 Compaq GS140 and 2 AS 4100.
Requirements I had were to have a "non compress" backup on tape. At  now, one
tape is not enough.
Which are the parameters in $II_INGRES/files/cktmpl.def file to set for a
multiple tape backup??

Thanks in advance.

Regards.

-----Messaggio originale-----

Inviato: luned 5 giugno 2000 15.05
A: 'Giovanni Franzese'
Oggetto: RE: checkpoint in multiple tapes

Giovanni,

the newsgroup can advise you better if we know:

Ingres version & patch
Operating system & version
Hardware
Can you afford the time overhead to compress the checkpoint before spooling
to tape?

HTH Colin.

-----Original Message-----

Sent: 01 June 2000 11:07

Subject: checkpoint in multiple tapes

Hi all,
I have a problem with checkpoint command.
I usually run ingres backup by "checkpoint" on a Compaq library (TZ887).
This library contains 7 tapes of 20/40 (native/compress) GByte.
One tape is no more enough .....it is necessary more then one tape (60
GB is the attual size of my backup on disk). The library can switch to
an other tape but the checkpoint command doesn't wait for, so the
operation doesn't work well.

Is it possibile to anable (with some parameters or option) the
checkpoint command for waiting for tape switching??
How can I handle a checkpoint on multiple tape?

Thank you.

Best Regards

 
 
 

checkpoint in multiple tapes

Post by MacKellar, Col » Tue, 06 Jun 2000 04:00:00


Hi Giovanni,

If you look in the cktmpl.def you should find "skeletons" on DCL commands.
I've never done Ingres & VMS together - so I'm guessing - I would guess that
the template has a backup command in it that you MIGHT be able to customise
to do what you want.

If I remember correctly, 6.3 did not "officially" support checkpoint
customisation - so you'll need to talk to tech support.

Perhaps other members of the group can help out on the VMS specifics!

Colin.

-----Original Message-----

Sent: 05 June 2000 14:32

Subject: Re: checkpoint in multiple tapes

Hi Colin, Hi all,
about O.S,. it is a OpenVMS (one of last version...)
Ingres is in 6.3 release (I don't know patch version)
HW: It's a cluster of 3 machine; 1 Compaq GS140 and 2 AS 4100.
Requirements I had were to have a "non compress" backup on tape. At  now,
one
tape is not enough.
Which are the parameters in $II_INGRES/files/cktmpl.def file to set for a
multiple tape backup??

Thanks in advance.

Regards.

-----Messaggio originale-----

Inviato: luned 5 giugno 2000 15.05
A: 'Giovanni Franzese'
Oggetto: RE: checkpoint in multiple tapes

Giovanni,

the newsgroup can advise you better if we know:

Ingres version & patch
Operating system & version
Hardware
Can you afford the time overhead to compress the checkpoint before spooling
to tape?

HTH Colin.

-----Original Message-----

Sent: 01 June 2000 11:07

Subject: checkpoint in multiple tapes

Hi all,
I have a problem with checkpoint command.
I usually run ingres backup by "checkpoint" on a Compaq library (TZ887).
This library contains 7 tapes of 20/40 (native/compress) GByte.
One tape is no more enough .....it is necessary more then one tape (60
GB is the attual size of my backup on disk). The library can switch to
an other tape but the checkpoint command doesn't wait for, so the
operation doesn't work well.

Is it possibile to anable (with some parameters or option) the
checkpoint command for waiting for tape switching??
How can I handle a checkpoint on multiple tape?

Thank you.

Best Regards

 
 
 

checkpoint in multiple tapes

Post by gkb.. » Tue, 06 Jun 2000 04:00:00


Ingres default behavior is to checkpoint each location to a separate tape.
If you are saving multiple locations to the same tape then the cktmpl.def
file has already been customized.
Perhaps you need to extend your database to a new location and relocate some
tables there(accessdb and relocate commands).   This location could be a new
logical device name on your same physical disk but make certain it has it's
own unique directory tree.
> -----Original Message-----

> Sent:      Monday, June 05, 2000 7:10 AM

> Subject:   Re: checkpoint in multiple tapes

> I'm new in Ingres. Plase, can you explain to me how to enable multi-tape
> backup by cktmpl.def file?


> > You can try to edit the $II_INGRES/files/cktmpl.def file.

> > Rick Elferink



> > > Hi all,
> > > I have a problem with checkpoint command.
> > > I usually run ingres backup by "checkpoint" on a Compaq library
> (TZ887).
> > > This library contains 7 tapes of 20/40 (native/compress) GByte.
> > > One tape is no more enough .....it is necessary more then one tape (60
> > > GB is the attual size of my backup on disk). The library can switch to
> > > an other tape but the checkpoint command doesn't wait for, so the
> > > operation doesn't work well.

> > > Is it possibile to anable (with some parameters or option) the
> > > checkpoint command for waiting for tape switching??
> > > How can I handle a checkpoint on multiple tape?

> > > Thank you.

> > > Best Regards

 
 
 

checkpoint in multiple tapes

Post by Joel77 » Thu, 08 Jun 2000 04:00:00


Hmmm not too sure with 6.3, the easiest way would probably be to parallel
checkpoint to disk (with compressed checkpoints -fastest if spare CPU)
and then backup file from disk to tape(s) (with a little help from DCL)
distribute the files to the tape devices.

Joel

 
 
 

checkpoint in multiple tapes

Post by Rick Elferin » Fri, 09 Jun 2000 04:00:00


(On a Unix system):
When is the command on a line used:
B for Begin
W for Work
E for End
What does the command apply to:
S for Checkpointing
R for Rollforward
E for Either
Third character: device:
T fo Tape
D for Disk
E for both types
On the command lines:
%T Type of operation (1 if tape, 0 if disk)
%N Location number (or number of locations)
%D Path to database directory
%C Path to checkpoint location (or device if tape)
%F Name of checkpoint file
%A Fully specified file (= %C/%F)

On our Unix boxes the standard way of doing a checkpoint is 'tar', I
replaces it with a backup-command that support multiple tapes. Good Luck !

Rick.

> I'm new in Ingres. Plase, can you explain to me how to enable multi-tape
> backup by cktmpl.def file?


> > You can try to edit the $II_INGRES/files/cktmpl.def file.

> > Rick Elferink



> > > Hi all,
> > > I have a problem with checkpoint command.
> > > I usually run ingres backup by "checkpoint" on a Compaq library
(TZ887).
> > > This library contains 7 tapes of 20/40 (native/compress) GByte.
> > > One tape is no more enough .....it is necessary more then one tape (60
> > > GB is the attual size of my backup on disk). The library can switch to
> > > an other tape but the checkpoint command doesn't wait for, so the
> > > operation doesn't work well.

> > > Is it possibile to anable (with some parameters or option) the
> > > checkpoint command for waiting for tape switching??
> > > How can I handle a checkpoint on multiple tape?

> > > Thank you.

> > > Best Regards

 
 
 

checkpoint in multiple tapes

Post by Giovanni Franzes » Sat, 10 Jun 2000 04:00:00


Does OpenVMS command like "tar" UNIX exist?
I'm asking this, becase I should store my backup on disk then "tar" the backup
on multiple taples.

Thank you


> On our Unix boxes the standard way of doing a checkpoint is 'tar', I
> replaces it with a backup-command that support multiple tapes. Good Luck !

> Rick.


> > I'm new in Ingres. Plase, can you explain to me how to enable multi-tape
> > backup by cktmpl.def file?


> > > You can try to edit the $II_INGRES/files/cktmpl.def file.

> > > Rick Elferink



> > > > Hi all,
> > > > I have a problem with checkpoint command.
> > > > I usually run ingres backup by "checkpoint" on a Compaq library
> (TZ887).
> > > > This library contains 7 tapes of 20/40 (native/compress) GByte.
> > > > One tape is no more enough .....it is necessary more then one tape (60
> > > > GB is the attual size of my backup on disk). The library can switch to
> > > > an other tape but the checkpoint command doesn't wait for, so the
> > > > operation doesn't work well.

> > > > Is it possibile to anable (with some parameters or option) the
> > > > checkpoint command for waiting for tape switching??
> > > > How can I handle a checkpoint on multiple tape?

 
 
 

checkpoint in multiple tapes

Post by Gary Hansfor » Sat, 10 Jun 2000 04:00:00


Giovanni,

From your messages it appears your running OpenVMS and Ingres 6.xxx. If
you were to look at the II_SYSTEM:[INGRES.FILES]CKTMPL.DEF file you
will see the option WST which is the (WORK,SAVE,TAPE) option. It
normally will point to the command file
II_SYSTEM:[INGRES.FILES.CHECKPOINT]CKP_TO_TAPE.COM.

This command file by default contains the following commands :-

$ alloc 'p3'
$ backup/verify/ignore=label_processing/exclude=
(pppp*.t*,*.m*,*.d*,*.sm*)-
    'p2'*.* 'p3''p4'
$ dismount/nounload 'p3'

You will want to change this command file, add the /MEDIA_FORMAT switch
to use compaction. If your using a tape loader then I'm sure that the
loader wants to know the labels, VMS can supply these through the
BACKUP command using the /LABEL=(tape1,tape2,tape...) switch. See the
VMS help on BACKUP for more info.

If you want to generate the labels and pass into the ckpdb program
ensure you do something like this...

tapes_to_use=="tape1,tape2,tape3"
ckpdb -mtape: db ...

inside the command file CKP_TO_TAPE you can then use the global symbol
tapes_to_use because ckpdb spawns a subprocess which kicks off the
actual backup command.

Hope this is what you were looking for...

Gary Hansford



> Hi Colin, Hi all,
> about O.S,. it is a OpenVMS (one of last version...)
> Ingres is in 6.3 release (I don't know patch version)
> HW: It's a cluster of 3 machine; 1 Compaq GS140 and 2 AS 4100.
> Requirements I had were to have a "non compress" backup on tape. At
now, one
> tape is not enough.
> Which are the parameters in $II_INGRES/files/cktmpl.def file to set
for a
> multiple tape backup??

> Thanks in advance.

> Regards.

> -----Messaggio originale-----

> Inviato: luned 5 giugno 2000 15.05
> A: 'Giovanni Franzese'
> Oggetto: RE: checkpoint in multiple tapes

> Giovanni,

> the newsgroup can advise you better if we know:

> Ingres version & patch
> Operating system & version
> Hardware
> Can you afford the time overhead to compress the checkpoint before
spooling
> to tape?

> HTH Colin.

> -----Original Message-----

> Sent: 01 June 2000 11:07

> Subject: checkpoint in multiple tapes

> Hi all,
> I have a problem with checkpoint command.
> I usually run ingres backup by "checkpoint" on a Compaq library
(TZ887).
> This library contains 7 tapes of 20/40 (native/compress) GByte.
> One tape is no more enough .....it is necessary more then one tape (60
> GB is the attual size of my backup on disk). The library can switch to
> an other tape but the checkpoint command doesn't wait for, so the
> operation doesn't work well.

> Is it possibile to anable (with some parameters or option) the
> checkpoint command for waiting for tape switching??
> How can I handle a checkpoint on multiple tape?

> Thank you.

> Best Regards

Sent via Deja.com http://www.deja.com/
Before you buy.
 
 
 

1. Large checkpoint to multiple tapes..

I know this is probably an old story but...

We will have a 4 - 6 GB database running on Sparc 1000.  
The problem is we expect to grow to 8 - 9 GB in the near
future.  The server has a 5GB (Compressesd) DAT tape.
It is my understanding that if you are going to use multiple
tapes, you must have an EXCLUSIVE lock on the database.
As we want to avoid using up valuable disk space (i.e.,
I imagine the checkpoint itself will be between 4 -8 GB),
has anyone found a reasonable work-around?  One option is
to rely on the Operating system backup, but unfortunatly
Ingres Tech Support does not support this option.  So, if
something goes wrong, we're stuffed.  Any help here will be
greatly appreciated.

Oh yes, it's Ingres version 6.4 running on Solaris 2.3.
Cheers
Mike
--
Michael Krey
British Aviation Insurance Group

No one ever got their work done by Friday, except Robinson Crusoe.

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