16.11.2011 1:22, Damyan Ivanov wrote:

>> Is there anything interesting in firebird.log?
>
> There is no firebird.log file in the current directory. Perhaps
> I missed an additional environment variable that needs to be set for
> embedded (the system-wide firebird log directory is not writable by
> the user).

Setting FIREBIRD should be enough.

> Here it is. This is after (1) creating the database in the first
> session and (2) attempting to attach to the freshly created database
> in another session (same user, hanging).
>
> OWNER BLOCK  20872
>          Owner id: 73448235728900, type: 1, pending:      0
>          Process id:  17101 (Alive), thread id: 1073877248
>          Flags: 0x10                           sgnl
>          Requests (21):  forward:  21040, backward:  23440
>          Blocks (1):     forward:  21040, backward:  21040
>
> OWNER BLOCK  23672
>          Owner id: 73761768341505, type: 1, pending:  23840
>          Process id:  17174 (Alive), thread id: 1073877248
>          Flags: 0x24                 wait tout
>          Requests (1):   forward:  23840, backward:  23840
>          Blocks: *empty*

The blocking process has been signaled (in the shared memory) but did 
not see that fact. This is likely to mean that the IPC event hasn't been 
delivered.


Dmitry

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