ShmemCreate: cannot create reg

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Hello!
I've tried to compile PostgreSQL v.6.5.2. for SCO
OpenServer 5.0.5.
I used directly instructions from documentation.
Compilation ended with
'All of PostgreSQL is successfully made.
Ready to install.'

But when I tried to start PostgreSQL server I've
got
a message :
'IpcMemoryCreate: shmget failed
(Invalid argument) key=5432001, size=1063936,
permission=600
FATAL 1:
ShmemCreate: cannot create region
'
In compilation log I saw pattern:

'c++ -I../../backend -I../../include -
I../../interfaces/libpq -I../../include -
I../../backend -dy -c pgconnection.cc -o
pgconnection.o
Starting parse
Entering state 0
Reading a token: Next token is 332
(EXTERN_LANG_STRING)
Reducing via rule 3 (line 314), -> @1
state stack now 0
Entering state 2
Reducing via rule 12 (line 340), -> @2
state stack now 0 2
Entering state 4
Next token is 332 (EXTERN_LANG_STRING)
Shifting token 332 (EXTERN_LANG_STRING), Entering
state 34
Reducing via rule 36 (line 400),
EXTERN_LANG_STRING -> extern_lang_string
state stack now 0 2 4
Entering state 38..."
and so on.
(...)
Entering state 1
Reading a token: Now at end of input.
Reducing via rule 2 (line 300), extdefs ->
program
state stack now 0
Entering state 1397
Now at end of input.
Shifting token 0 ($), Entering state 1398
Now at end of input.
All of PostgreSQL is successfully made. Ready to
install.'

Thanks for any help

Regards, Adam Walczykiewicz
(adam(dot)walczykiewicz(at)multiuser(dot)com(dot)pl)

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