Informix 7.22 Online under AIX 4.1 ERRORS !!!!!

Informix 7.22 Online under AIX 4.1 ERRORS !!!!!

Post by Jesus Centell » Sun, 31 Dec 1899 09:00:00



I would like to resolve a problem:

Message in /informix/online.log  :

  shmat: [EINVAL][22]:shared memory base adress illegal
   using 0xd0000000, needs 0xffffffff

Anybody knows the problem and the solution? (Possible bad parameters)
 In informix or AIx? I dont know .....
Thanks Thanks


 
 
 

Informix 7.22 Online under AIX 4.1 ERRORS !!!!!

Post by Paul Watso » Sun, 31 Dec 1899 09:00:00


Jesus Centella

> I would like to resolve a problem:

> Message in /informix/online.log  :

>   shmat: [EINVAL][22]:shared memory base adress illegal
>    using 0xd0000000, needs 0xffffffff

> Anybody knows the problem and the solution? (Possible bad parameters)
>  In informix or AIx? I dont know .....
> Thanks Thanks



I have this problem on an existing system, Informix 7.12 and AIX 3.2.5
I've been told by ITS this is a known problem and I'll have to upgrade.
The problem, I believe, is due to HVMMLIM/SVMMLIM being set to low,
apparently these are not tunable according to our AIX experts.  If
anybody here can tell me different I'll be very happy.

--
Paul Watson                    #
WF Software Ltd                # It said run using Windows 95  
Tel: +44 1436 674629           # or better in the manual
Fax: +44 1436 678693           # so I used Unix
www.wfsoftware.co.uk           #

 
 
 

Informix 7.22 Online under AIX 4.1 ERRORS !!!!!

Post by dkabr.. » Sun, 31 Dec 1899 09:00:00


Jesus Centella

> I would like to resolve a problem:

> Message in /informix/online.log  :

>   shmat: [EINVAL][22]:shared memory base adress illegal
>    using 0xd0000000, needs 0xffffffff

> Anybody knows the problem and the solution? (Possible bad parameters)
>  In informix or AIx? I don?t know .....
> Thanks Thanks



I have had the same problem with AIX 4.2.1 and Informix OnLine 7.22UC2.
The solution was to increase the size of new shared memory segments
because on AIX their is a limit of 10 shared memory segments. I don't
know if is possible to change this limit. But it was easier to me just
to change the SHMADD parameter i the onconfig file and then recycle
the Informix Server. You can also increase the SHMVIRTSIZE parameter
to prevent the Informix Server to make to many new shared memory
segments.

Make onstat -g seg   -- and count the numbers of shared memory segments .
Make onmode -F       -- free unuseed shared memory segments

From onconfig :
SHMBASE         0x30000000  c Shared memory base address
SHMVIRTSIZE     8000        c initial virtual shared memory segment
SHMADD          4096        c Size of new shared memory segments (Kbyte)
SHMTOTAL        0           c Total shared memory (Kbytes). 0=>unlimited

Hope this will help you.

Bjarne W. Jensen
Alm. Brand
Denmark

 
 
 

Informix 7.22 Online under AIX 4.1 ERRORS !!!!!

Post by Bryan Tonn » Sun, 31 Dec 1899 09:00:00


Quote:>>   shmat: [EINVAL][22]:shared memory base adress illegal
>>    using 0xd0000000, needs 0xffffffff

>From onconfig :
>SHMBASE         0x30000000  c Shared memory base address

PMFJI, but isn't this the important one?  The machine specific release notes
detail the correct shared memory address for the platform.  You obviously
have it right, but the original posting looks highly suspect.  I would check
the $INFORMIXDIR/release/?en_us?/*/<machine specific notes> for the correct
parameters for the platform

Quote:>SHMVIRTSIZE     8000        c initial virtual shared memory segment
>SHMADD          4096        c Size of new shared memory segments (Kbyte)
>SHMTOTAL        0           c Total shared memory (Kbytes). 0=>unlimited
>Hope this will help you.

Me too :)

--
Bryan Tonnet

 
 
 

1. Informix Online problems with AIX 4.1.

Folks,

        We have an application using Informix Online 5.01.UD3 running fine
on AIX 3.2.5. When we upgraded AIX to 4.1, the application crashes in mallocs
done by the online engine. The crashes take place when we try to allocate
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        Does Aix 4.1 have a new malloc? mallocs dine by our application seem
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        Any and all responses on this matter appreciated.

Thanx,

Raj.

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