How to use db2iupdt -w 64 to update my instance from 32bit to 64bit?

[victor deng]

I use db2iupdt -w 64 to update my instance from 32bit to 64bit, and my database under this instance should do nothing.

I do not know what is the detail about db2iupdt -w command ,what does it do? and why my database should do nothing.

Could you give some advices? thanks a lot.

[vijay2082]

Hi Victor,

use below information for upgrating your instance to 64 bit.

Can you be a bit more clear on the phrase "and my database under this instance should do nothing" ?
Ideally this should mean that your database won't be accessible during the whole upgrade process. Also check on 64 bit application supports.

1) Migrating DB2 32-bit servers to 64-bit systems (Linux and UNIX)
http://publib.boulder.ibm.com/infoce...c/t0009804.htm

2) Upgrading your 32-bit DB2 instances to 64-bit instances (Windows)
DB2(R) 32-bit and 64-bit instances cannot exist on the same system. Any 32-bit instances will be removed when you install any DB2 Version 9 64-bit database product.

You cannot install a 64-bit DB2 Version 9 copy on a system with multiple 32-bit DB2 Version 9 copies.

Procedure
If you have more than one 32-bit DB2 Version 9 copy on your system and want to upgrade to 64-bit, perform the following steps:

Move all your 32-bit instances over to one DB2 copy using the db2iupdt command
Uninstall the 32-bit DB2 copies, except for the one where you have moved all your 32-bit instances over to
Install DB2 Version 9 64-bit which will upgrade your 32-bit DB2 Version 9 instances to 64-bit DB2 Version 9 instances.

[victor deng]

thanks very much,vijay.
I really want to know what`s the detail things about db2iupdt / db2imigr / migrate db.
Here is my understanding:db2iupdt -w 64 relink some files in sqllib directory to lib64&bin64 under db2 installation directory.
And db2imigr relink these files to new db2 installation directory.

And migrate db command generates new packages using new db2 version.