Database conversion on very lg tables when extending lenght of InfoObject

Hello Gurus,
We need to extend the lenght of an InfoObject which is contained in a number of DSOs. These DSOs are very large (altogether about 1billion records). When we transport the change to the InfoObject SAP forces us to run a database conversion (in SE14) on all the underlying tables of the DSOs (Change Log and Active Tables) which contain the InfoObject we're changing. However, this is taking a very long time as SAP is doing a large number of SQL SELECT statements etc on the data in these tablese. However, the InfoObject doesn't have an ALPHA conversion on it and all we want is to change the DDIC definition - we do not want SAP to start copying data, renaming tables, selecting data etc. Has anyone else come across this and does anyone know if there's a way to do this without having to do the database conversion in this way - i.e. where it doesn't access the data.....?
Thanks in advance,
Joachim

This is going to seem a plum of a question in this forum, but i've had to register to gain access relating to the problem i have... Well, not exactly a problem but an unneccessary addition !
I had to format my hard drive and had to install XP Pro Service pack 1A instead of the original service pack 1. Java plugin has been removed from the service pack, and because i needed to access web pages containing java code, i downloaded the java plugin... I thought !
I now have a program called Java web start, which opens with options for notepad, Draw 4, Military Game and swingset 2...
I want to un-install the program, and install only the plug in - so could someone plant me a Hyperlink to somewhere i can download ONLY the plug-in, and not the actual program...
I've looked at some of the demo's... but haven't even grasped the concept of what the program is actually for... so there isn't much chance of me using it for the purpose it was intended, because as i've said, i haven't got a clue what it's all about !

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