Sent an email a
while ago about migrating an app developed on Orion 1.5.2 to WebLogic 6.1 and as
requested am letting you know about the 'quirks' I
encountered!
As its an intranet
app and aint gonna have that many hits I didn't opt for using Apache to server
static content, but my impression is that if you are gonna get a lot of hits
they recommend using Apache. Setting this up didn't look that complicated and
there are plenty info on doing this.
If you are using
Oracle and the type4 JDBC drivers, there are quite a few issues WebLogic has.
For example, if you do a select for update and autocommit is on, it messes up.
Cant list them all, but had to do quite a few tweaks to the code to get it to
work. There is a lot of information on these issues and I recommend reading it
thoroughly before (which I didn't :) Its understandable why Oracle are using
Orion for their app server.
In terms of
Deployment, Weblogic 6.1 is really designed for EJB 2.0 and deploying
apps as ear, war, and jar files via the gui console. But as I built mine
exploded and EJB1.1 it was a bit fiddly to get it to work, but not impossible.
The biggest prob I encountered was that it doesn't automatically generate its
version of orion-ejb-jar.xml (weblogic-ejb-jar.xml). You have to create this
yourself but its not complicated.
I had problems with
the servers mime-types. If you have any odd mime-types (and by odd I mean a ms
word file) you need to specify mime mappings in your WEB-INF/web.xml . There is
no mime list like the file mime.types in Orion.
Overall, most of the
problems I had was really figuring out how WebLogic works. It is way more
complicated then Orion, which I think is intentional on BEA's part, and really
really expensive. After using WebLogic, I have become an even bigger fan of
Orion!
Hope you find this
info useful. If you have any questions let me know!
Johnny
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