Starting embedded Orber

Ulf Wiger (AL/EAB) <>
Tue Sep 28 13:15:57 CEST 2004


It does seem as if orber were intended to be started from the
app file, but you must make sure that it's installed first.

Orber will hang waiting for tables, and since you didn't run
orber:install() first, it will wait forever (mnesia doesn't
volunteer the information that the tables have not been 
created.)

The orber:install/2 function will automatically start mnesia
as well, if it isn't already started. This means that you should
make sure that mnesia is installed before installing orber.

/Uffe

> -----Original Message-----
> From: 
> [mailto:]On Behalf Of Jimmy Olgeni
> Sent: den 28 september 2004 11:49
> To: 
> Subject: Starting embedded Orber
> 
> 
> 
> Hi,
> 
> I made an application that requires both Orber and Mnesia. The OTP 
> documentation always uses mnesia:start() and orber:start() in the 
> examples, but I was wondering if I could start the services 
> by listing 
> them in the ".app" file. Mnesia seems to work fine, but Orber just 
> hangs waiting for something. Also, it would not start if it wasn't
> install()ed before.
> 
> Calling "i()" gives the following report:
> 
> Pid                   Initial Call                          
> Heap     Reds Msgs
> Registered            Current Function                     Stack
> 
> <0.71.0>              application_controller:init_start      
> 987       23    0
>                        proc_lib:sync_wait/2                    12 
> <0.72.0>              application_master:init/4              
> 377       13    0
>                        application_master:init_loop/4          16 
> <0.73.0>              application_master:start_it/4          
> 377       45    0
>                        proc_lib:sync_wait/2                    10 
> <0.74.0>              supervisor:orber/1                     
> 233       38    0
> orber_sup             mnesia_controller:do_wait_for_tab       22 
> <0.75.0>              mnesia_controller:wait_for_tables      
> 233       16    0
>                        mnesia_controller:rec_tabs/4             9 
> Total                                                      
> 48478   286800    0
>                                                               698
> 
> ... but I couldn't find out what is mnesia_controller:do_wait_for_tab
> waiting for.
> 
> Is Orber supposed to start from application files or should I 
> simply add
> orber:start () to my application's start/0? :-)
> 
> -- 
> jimmy
> 



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