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IDS Forum

RE: interrupted external restore and data availabi

Posted By: Dan Mueller
Date: Monday, 28 February 2011, at 3:57 p.m.

In Response To: interrupted external restore and data availability (GERARDO PADIERNA)

Actually here it is and once again, my thanx to joe plugge for helping me out on the same issue.

Dan

Create a command file that contains the schema of the table from and table to (don't forget to put what dbspace(s) it was built in) See note below for replicated tables and the workaround so that you do not run into a bug that causes duplicates and other odd behavior due to replicated tables.

Example file (gmc_lows.cmd)

---------------------------------------------------------------------------------------------------
database class;
create table gmc_lowes

(

count integer,

card_num char(19) not null ,

order_num char(15) not null ,

pass_code char(26) not null ,

amount char(15) not null ,

expdate char(8) not null ,

stdate char(8) not null ,

sttime char(6) not null ,

status smallint,

call_time integer
) in dbs1 ;

create table gmc_lowes_restore
(

count integer,

card_num char(19) not null ,

order_num char(15) not null ,

pass_code char(26) not null ,

amount char(15) not null ,

expdate char(8) not null ,

stdate char(8) not null ,

sttime char(6) not null ,

status smallint,

call_time integer
) in dbs1 ;

insert into gmc_lowes_restore select * from gmc_lowes;

restore to '2008-04-03 14:00:00';
---------------------------------------------------------------------------------------------------

Here is the command to run:

archecker -bXvs -f /wic/scratch/gmc_lows.cmd

This is what you will see on the screen:

informix @ ibm91l:/wic/scratch: archecker -bXvs -f /wic/scratch/gmc_lows.cmd

IBM Informix Dynamic Server Version 10.00.FC6

Program Name: archecker

Version: 8.0

Released: 2006-12-19 00:20:38

CSDK: IBM Informix CSDK Version 2.90

ESQL: IBM Informix-ESQL Version 2.90.FN458

Compiled: 12/19/06 00:22 on AIX 2 5

AC_STORAGE /tmp

AC_MSGPATH /tmp/ac_msg.log

AC_VERBOSE on

AC_TAPEBLOCK 60 KB

AC_IXBAR /wic/informix/etc/ixbar.91

Dropping old log control tables

Extracting table class:gmc_lowes into class:gmc_lowes_restore

........................................

.....................................

Scan PASSED

Control page checks PASSED

Table checks PASSED

Table extraction commands 1

Tables found on archive 1

LOADED: class:gmc_lowes_restore produced 30 rows.

Creating log control tables

Staging Log 1888

** NOTE *** For Replicated TABLES :
###########################################################################

The cmd file needs to look like this- (note that cdrserver and cdrtime are both int's):

---------------------------------------------------------------------------------------------------
database stores_demo;
create table rocket
(cdrserver int,
cdrtime int,
rocket_id int,
rocket_name char(20),
rocket_cost money(10,2),
launch_date datetime year to second,
primary key (rocket_id,rocket_name)
) in dbs1;
create table rocket2
(
rocket_id int,
rocket_name char(20),
rocket_cost money(10,2),
launch_date datetime year to second,
primary key (rocket_id,rocket_name)
) with crcols;

insert into rocket2 select rocket_id, rocket_name, rocket_cost,launch_date from rocket; restore to current with no log;
---------------------------------------------------------------------------------------------------

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of GERARDO PADIERNA
Sent: Monday, February 28, 2011 3:30 PM
To: ids@iiug.org
Subject: interrupted external restore and data availability [22945]

Hi,
we have a serious issue with a 420GB instance we need to restore. Actually, we only need a table from one of the databases it contains, but we cannot afford to restore it on the production environment (it takes over 40 hrs). We usually restore the instance via an external restore on a dedicated server and access the data we need.
My question is, since we only need a small part of the the instance, is it possible to stop the restore (onbar) as soon as the bar_act.log says the dbspace we need has been restored and forget about the rest of dbspaces (as long as the critical dbspaces have been restored too, obviously)? When we then perform an onmode -m to put it in On-Line mode, are the dbspaces whose restore have been completed accessible or is everything lost and we have to let the onbar restore process finish?

For the record, we restore with onbar -r -p (only physical restore). And it's an IDS 9.40.FC6 on solaris 9, database storage on raw devices.

BTW, we also tried table level restore (archecker) from an IDS 10.00, but it didn't quite finish: we reached a TIMEOUT (5hrs,30min) and we would like to repeat this with a higher timeout, but the second question is, is this possible? I mean, can an IDS 10.00 via archecker access the data stored with onbar by an IDS 9.40 (both of them solaris 9), or is there a binary incompatibility (like when you try, e.g. to restore from an ontape copy performed with an IDS 9.40 on an IDS 10.00 platform)?

Thanks a lot in advance!
Bye

*******************************************************************************
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