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Hello,
It will surely work if you install 5.29.6 on both OSes.
The backward compatibility is maintained so, 5.29.6 can read old
databases and convert them automatically to new format.
However old 5.20 version is not *forward* compatible because it does not
know new format and can not read it.
AmiBroker 5.20 reads the database version number and it just finds out
that the database is in newer format that it does not understand and it
simply skips reading those files, resulting in empty database. But at
this point _nothing_ is lost. It can only happen if you overwrite
database by *saving* empty data using old v5.20 onto new format database.
General rule is that if you want to share files you should use same
version of application.
Best regards,
Tomasz Janeczko
amibroker.com
On 2010-01-24 05:19, Barry wrote:
> Sorry about that Tomasz.
>
> Too much going on at once for this old man. I had read the note about the databases change and backed up my databases when I installed 5.29 so not all was lost. What really got me was that I had created the database on Win 7 with another name then changed the database name in preferences to point to the same db. I thought that would allow me to use the same database with bot operating systems. Since the down level Ami does not know to look at the database version and send an error it makes sense it would corrupt it.
>
> Maybe that will work and will try it again when I get 5.29.6 installed on both. I was trying to figure out why Ami is closing when it back fills from IB. I forgot about the database change.
>
> Barry
>
> --- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko<groups@xxx> wrote:
>
>> Hello,
>>
>> Did you ever read the **READ ME** for BETA ????
>> http://www.amibroker.com/devlog/2009/12/23/amibroker-5-29-6-beta-released/
>>
>> You should READ CAREFULLY, VERY CAREFULLY first before starting to use
>> any beta.
>>
>> What is written in bold text ???
>> Did your read that text in bold that appears in the very beginning ???????
>>
>> Since version 5.27 the format of database files (quotation / stock /
>> drawings ) has changed.
>> *So once data are saved with version 5.27 you will NOT be able to read
>> them in pre-5.27 version.*
>> Please make a backup of your pre-5.27 DATA in case you want to revert to
>> previous version at any time in the future.
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>>
>> On 2010-01-23 23:38, Barry wrote:
>>
>>> No, one is 5.29.6 and the other is 5.20.0. Why should that make a difference? There should still be a warning before Ami corrupts an existing database. There was a database format change but I can't remember what release. I would not expect a database change in betas within 5.20...
>>>
>>> Barry
>>>
>>> --- In amibroker@xxxxxxxxxxxxxxx, Kevin243@ wrote:
>>>
>>>
>>>> Same versions of Ami?
>>>>
>>>>
>>>>
>>>>
>>>> In a message dated 1/23/2010 12:30:47 P.M. Central Standard Time,
>>>> razzbarry@ writes:
>>>>
>>>> I installed Windows 7 on my system along with XP, dual boot. I created a
>>>> database on Win 7 and tried to point it to the same database I am using in
>>>> XP. When I tried to look at the tickers in the data base nothing was there.
>>>> I went back to XP and tried to use the database and nothing was there. I
>>>> looked at the database and it had the data in it. So what did Ami do?
>>>> It seems Ami is not clever enough to see that a database is in use and
>>>> simply allow a separate instance of Ami to share the data base. It should not
>>>> erase the data without a warning.
>>>>
>>>> I keep the data on a separate hard drive from my programs. So both
>>>> operating systems can access the data files.So what do I have to do now to
>>>> 1. get the data base into a usable form?
>>>> 2. Allow Win 7 to share the same database?
>>>>
>>>> I could have backed it up but I did not expect Ami to screw up the
>>>> database, and it should not have. Data is the most important part and care should
>>>> be taken not to destroy it. If it destroyed the data this is really
>>>> annoying since some of the data cannot be replaced.
>>>>
>>>> Thanks,
>>>> Barry
>>>>
>>>>
>>>>
>>>> ------------------------------------
>>>>
>>>> **** IMPORTANT PLEASE READ ****
>>>> This group is for the discussion between users only.
>>>> This is *NOT* technical support channel.
>>>>
>>>> TO GET TECHNICAL SUPPORT send an e-mail directly to
>>>> SUPPORT {at} amibroker.com
>>>>
>>>> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
>>>> http://www.amibroker.com/feedback/
>>>> (submissions sent via other channels won't be considered)
>>>>
>>>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>>>> http://www.amibroker.com/devlog/
>>>>
>>>> Yahoo! Groups Links
>>>>
>>>>
>>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> **** IMPORTANT PLEASE READ ****
>>> This group is for the discussion between users only.
>>> This is *NOT* technical support channel.
>>>
>>> TO GET TECHNICAL SUPPORT send an e-mail directly to
>>> SUPPORT {at} amibroker.com
>>>
>>> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
>>> http://www.amibroker.com/feedback/
>>> (submissions sent via other channels won't be considered)
>>>
>>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>>> http://www.amibroker.com/devlog/
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>>
>>>
>>
>
>
>
> ------------------------------------
>
> **** IMPORTANT PLEASE READ ****
> This group is for the discussion between users only.
> This is *NOT* technical support channel.
>
> TO GET TECHNICAL SUPPORT send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> http://www.amibroker.com/feedback/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
>
>
>
>
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
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