Database upgrades

earthq · 06-25-2009, 07:20 PM

Hi,

What is the process for upgrading metadata.db from one calibre version to the next?
I have found in the forums the following:

calibre-debug.exe --migrate "c:\path\to\your\old\library1.db" "c:\path\to\your\new\library\folder"

But also that the upgrade would occur automagically.

Which is the case?
Also for latest beta?

Thanks!

kovidgoyal · 06-25-2009, 08:14 PM

it will happen automatically

am_mread · 06-26-2009, 12:27 AM

Is it possible to "downgrade"?

kovidgoyal · 06-26-2009, 01:53 AM

No it isn't

earthq · 06-26-2009, 04:13 PM

I use a portable flavor of Calibre (through batch script and environment variable).
What I do is install Calibre normally, then zip folder and uninstall. Then extract zip in my USB drive and run it through script to pick both library and config from the USB disk.

The idea was to install latest beta and copy content over the current build on my USB disk.

However, I did it but calibre did not start.
Then I copied over previous build again but db seem to have been upgraded so did not work properly neither.

Fortunately I had a metadata backup

06-25-2009, 07:20 PM	#1
earthq Enthusiast Posts: 30 Karma: 10 Join Date: Jun 2009 Device: none	Database upgrades Hi, What is the process for upgrading metadata.db from one calibre version to the next? I have found in the forums the following: calibre-debug.exe --migrate "c:\path\to\your\old\library1.db" "c:\path\to\your\new\library\folder" But also that the upgrade would occur automagically. Which is the case? Also for latest beta? Thanks!

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06-25-2009, 08:14 PM	#2
kovidgoyal creator of calibre Posts: 45,639 Karma: 28549046 Join Date: Oct 2006 Location: Mumbai, India Device: Various	it will happen automatically

06-26-2009, 12:27 AM	#3
am_mread Head Goat Posts: 74 Karma: 50 Join Date: Mar 2009 Location: Grand Cayman, Cayman Islands. Device: Kindle Paperwhite Gen 11.	Is it possible to "downgrade"?

06-26-2009, 01:53 AM	#4
kovidgoyal creator of calibre Posts: 45,639 Karma: 28549046 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No it isn't

06-26-2009, 04:13 PM	#5
earthq Enthusiast Posts: 30 Karma: 10 Join Date: Jun 2009 Device: none	I use a portable flavor of Calibre (through batch script and environment variable). What I do is install Calibre normally, then zip folder and uninstall. Then extract zip in my USB drive and run it through script to pick both library and config from the USB disk. The idea was to install latest beta and copy content over the current build on my USB disk. However, I did it but calibre did not start. Then I copied over previous build again but db seem to have been upgraded so did not work properly neither. Fortunately I had a metadata backup

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