The Doctor <doc...@doctor.nl2k.ab.ca> writes:
> Right I have 8.1.X working properly. but 
> when I run make  check I get

> creating template1 database in 
> /usr/source/postgresql-8.3.6/src/test/regress/./tmp_check/data/base/1 ... 
> FATAL:  could not create semaphores: No space left on device
> DETAIL:  Failed system call was semget(1, 17, 03600).
> HINT:  This error does *not* mean that you have run out of disk space.
>       It occurs when either the system limit for the maximum number of 
> semaphore sets (SEMMNI), or the system wide maximum number of semaphores 
> (SEMMNS), would be exceeded.  You need to raise the respective kernel 
> parameter.  Alternatively, reduce PostgreSQL's consumption of semaphores by 
> reducing its max_connections parameter (currently 13).
>       The PostgreSQL documentation contains more information about 
> configuring your system for PostgreSQL.

Apparently your kernel doesn't have enough semaphores to allow 8.1 and
8.3 to run concurrently.  Follow the advice in the HINT.

                        regards, tom lane

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