dhis2-users team mailing list archive

[Olav Poppe <olav.poppe@xxxxxxxxx>]

What would be the main benefits of this versus just using the H2 database in DHIS live, except the documentation?
 
Den 18. aug. 2011 kl. 14:12 skrev Jason Pickering:

> We have also created an H2 installer, which is considerably easier than the Postgres installer. This would allow you to install this on a users machine, with the documentation and a pre-populated H2 database, which may be something to consider. Let me know if this would fit your deployment plans, and we can discuss more details. 
> 
> Regards,
> Jason
> 
> 
> On Thu, Aug 18, 2011 at 4:10 PM, Olav Poppe <olav.poppe@xxxxxxxxx> wrote:
> Thanks, I will at least try to see how the default H2 performs.
> 
> Olav
> 
> Den 18. aug. 2011 kl. 13:50 skrev Knut Staring:
> 
>> I agree with Bob that it is worth trying going with H2, as it does simplify things considerably. It also provides a possibility for db backup (and transmission) through the copying (and sending) of the whole db file (though a monthly zipped incremental DXF export should be smaller).
>> 
>> Knut
>> 
>> On Thu, Aug 18, 2011 at 3:40 PM, Olav Poppe <olav.poppe@xxxxxxxxx> wrote:
>> Thanks
>> It seems the barrier for going offline should be quite high... Will have to look more into exactly how bad the connections are in the worse areas, and also into the offline data entry in 2.4.
>> 
>> As for those districts that are in fact offline, is the live package with H2 sufficient? Keeping postgres out of the picture would likely reduce the amount of support required quite a lot.
>> 
>> Olav 
>> 
>> 
>> Den 18. aug. 2011 kl. 13:32 skrev Jason Pickering:
>> 
>>> I agree with both Bob and Ola. 
>>> 
>>> We have tried not quite yet succeeded in getting DHIS2 installed with Tomcat/Postgres on Windows with a one-click installer, this my caveat about a "supervised" install. There are a lot of things which can happen on users machines and maintenance becomes a huge issue. DHIS is still under intense development, and a lot of things change quickly. Upgrading a single server is a piece of cake. Upgrading dozens or hundreds of off-line machines is a true nightmare and a serious risk and resource drain to any deployment. 
>>> 
>>> I agree with Ola. Totally exclude an on-line server as an option first. If you have already done that, all I can say is, be prepared for a LOT of tech support. 
>>> 
>>> Regards,
>>> Jason
>>> 
>>> 
>>> On Thu, Aug 18, 2011 at 3:15 PM, Ola Hodne Titlestad <olati@xxxxxxxxxx> wrote:
>>> Olav,
>>> 
>>> How offline are these districts? Can they not get connected through mobile usb modems/dongles? There is so much to gain from online deployment that I would check out every alternative of connectivity before deciding to go completely offline. The mobile Internet solution is working very well in Kenya. With the offline data entry capabilities in the upcoming 2.4, the districts do not have to be online during the data entry process, which is a major advantage in areas with poor/unstable connectivity.
>>>  
>>> Further recommendations on deployment can be found in the implementation guide here:
>>> http://dhis2.org/doc/snapshot/en/implementer/html/ch04.html
>>> 
>>> And a presentation on the same topic in the zip file with implementation guide slides here:
>>> http://dhis2.org/download/presentations/presentations.zip
>>> 
>>> Ola
>>> -------
>>> 
>>> 
>>> ----------------------------------
>>> Ola Hodne Titlestad (Mr)
>>> HISP
>>> Department of Informatics
>>> University of Oslo
>>> 
>>> Mobile: +47 48069736
>>> Home address: Vetlandsvn. 95B, 0685 Oslo, Norway. Googlemaps link
>>> 
>>> 
>>> 
>>> On 18 August 2011 15:02, Jason Pickering <jason.p.pickering@xxxxxxxxx> wrote:
>>> One strong reason not to use it is the relative lack of testing. In theory, it should work, but just as with MySQL, much more testing has occurred with Postgres than with the other database systems. 
>>> 
>>> We have some beta-level Windows installers, which might be of interest to you, which work pretty well under supervised circumstances. It might be something to consider if you want a relatively automated install of the DHISLive/Postgresql stack, with automated restore of the database. 
>>> 
>>> Regards,
>>> Jason
>>> 
>>> 
>>> On Thu, Aug 18, 2011 at 2:48 PM, Olav Poppe <olav.poppe@xxxxxxxxx> wrote:
>>> Hello,
>>> we're looking at what do to with offline installations for the implementation here in Ghana. Are there any reasons not to use DHIS Live? Can H2 be used (importing the metadata into an empty database), or should postgres be set up as well?
>>> 
>>> There are 170 districts here, and about half of them might have to be offline installs so an easy-to-use solutions would be good.
>>> 
>>> Thanks,
>>> Olav
>>> 
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>>> 
>> 
>> 
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>> 
>> 
>> 
>> -- 
>> Cheers,
>> Knut Staring
> 
>