IDS Forum

Re: Cannot release unused virtual memory segment

Posted By: Art Kagel
Date: Monday, 20 June 2011, at 2:26 p.m.

In Response To: RE: Cannot release unused virtual memory segment (Knox, Ernest)

It absolutely could, and to fix that, which is a different question, I would
add the sizes of the two additional segments to the size of the initial
SHMVIRTSIZE. But, the OP's original problem is that he apparently cannot
run ontape because they are out of memory and the only thing that's going to
prevent that from recurring is by buy more memory and install it.

Art

Art S. Kagel
Advanced DataTools (www.advancedatatools.com)
Blog: http://informix-myview.blogspot.com/

Disclaimer: Please keep in mind that my own opinions are my own opinions and
do not reflect on my employer, Advanced DataTools, the IIUG, nor any other
organization with which I am associated either explicitly, implicitly, or by
inference. Neither do those opinions reflect those of other individuals
affiliated with any entity with which I am affiliated nor those of the
entities themselves.

On Mon, Jun 20, 2011 at 1:49 PM, Knox, Ernest <Ernest.Knox@searshc.com>wrote:

> So what should be increased to make these values or areas larger than what
> =
> he has showing? Once he bounces the instance, the same issue could re-occu=
> r sooner than later.
>
> > 3 1381386244 239800000 41943040 1792 V 996 9244=20
> > 4 1381386245 23c000000 41943040 1792 V 846 9394
>
> Thanks,
> *******************************************************************
> Ernie Knox
> IT Database=A0Administrator Specialist
> Sears Holdings - BU: I & T Group
> 3333 Beverly Rd.
> Hoffman Estates, IL. 60179
> Office: (847) 286-5735
> Email: Ernest.Knox@searshc.com
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>
> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Art
> K=
> agel
> Sent: Monday, June 20, 2011 1:09 PM
> To: ids@iiug.org
> Subject: Re: Can not release unused virtual memory segment [24088]
>
> The problem is that the segment is NOT unused. There are over 900 blocks
> us=
> ed in segment #3 and over 800 blocks used in segment #4. That is why you
> ca=
> nnot release them. The only way will be to shutdown the server and restart
> =
> it. There is no way to force the server to move the data from the
> additiona=
> l virtual segments to the unused space in the initial virtual segment.=20
>
> Art=20
>
> Art S. Kagel=20
> Advanced DataTools (www.advancedatatools.com)=20
> Blog: http://informix-myview.blogspot.com/=20
>
> Disclaimer: Please keep in mind that my own opinions are my own opinions
> an=
> d=20
> do not reflect on my employer, Advanced DataTools, the IIUG, nor any other=
> =20
> organization with which I am associated either explicitly, implicitly, or
> b=
> y=20
> inference. Neither do those opinions reflect those of other individuals=20
> affiliated with any entity with which I am affiliated nor those of the=20
> entities themselves.=20
>
> On Mon, Jun 20, 2011 at 12:40 PM, KANTI BAKARANIA <
> kbakarania@pascoclerk.co=
> m=20
> > wrote:=20
>
> > IBM Informix Dynamic Server Version 9.40.FC2=20
> >=20
> > Tru64 UNIX version 5.1a=20
> >=20
> > I want to release unused virtual memory segment. I used the command
> onmod=
> e=20
> > -F.=20
> > It does not work. online.log has following entry.=20
> >=20
> > 11:28:22 Attempting to free unused operating system segments. This=20
> > operation may take several minutes.=20
> >=20
> > 11:47:19 shmat: [ENOMEM][12]: out of available data space, check system=
> =20
> > MAXMEM=20
> >=20
> > 11:47:19 create_tcb: cannot allocate memory=20
> >=20
> > 11:47:25 shmat: [ENOMEM][12]: out of available data space, check system=
> =20
> > MAXMEM=20
> >=20
> > 11:47:25 out of virtual shared memory=20
> >=20
> > Here is the output for onstat -g seg.=20
> >=20
> > # onstat -g seg=20
> >=20
> > IBM Informix Dynamic Server Version 9.40.FC2 -- On-Line -- Up 13:52:13
> --=
> =20
> > 1024000 Kbytes=20
> >=20
> > Segment Summary:=20
> > id key addr size ovhd class blkused blkfree=20
> > 0 1381386241 200000000 595591168 437760 R* 144776 632=20
> > 1 1381386242 223800000 360710144 11520 V 71571 16493=20
> > 2 1381386243 239000000 8388608 768 M 1231 817=20
> > 3 1381386244 239800000 41943040 1792 V 996 9244=20
> > 4 1381386245 23c000000 41943040 1792 V 846 9394=20
> > Total: - - 1048576000 - - 219420 36580=20
> >=20
> > (* segment locked in memory)=20
> >=20
> > onconfig file parameters.=20
> >=20
> > SHMBASE 0x200000000L=20
> > SHMVIRTSIZE 350000=20
> > SHMADD 40960=20
> > SHMTOTAL 0=20
> > DUMPSHMEM 1=20
> >=20
> > We have problem for ontape backup to run. We need to release unused
> virtu=
> al=20
> > memory segment.=20
> >=20
> > Thank you=20
> >=20
> > Kanti=20
> >=20
> >=20
> >=20
> >=20
>
> ***************************************************************************=
> ****=20
> > Forum Note: Use "Reply" to post a response in the discussion forum.=20
> >=20
> >=20
>
> --20cf3071c696e9478e04a627caaf=20
>
>
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Messages In This Thread

• Can not release unused virtual memory segment
  KANTI BAKARANIA -- Monday, 20 June 2011, at 12:40 p.m.
  • Re: Can not release unused virtual memory segment
    Art Kagel -- Monday, 20 June 2011, at 1:09 p.m.
    • RE: Cannot release unused virtual memory segment
      Knox, Ernest -- Monday, 20 June 2011, at 1:49 p.m.
      • Re: Cannot release unused virtual memory segment
        Art Kagel -- Monday, 20 June 2011, at 2:26 p.m.
        • RE: Cannot release unused virtual memory segment
          Knox, Ernest -- Monday, 20 June 2011, at 3:06 p.m.
        • Re: Cannot release unused virtual memory segment
          John Miller iii -- Monday, 20 June 2011, at 4:05 p.m.
          • RE: Cannot release unused virtual memory segment
            Dirk Cornelis Moolman [ MTN - Innovation Centre ] -- Saturday, 25 June 2011, at 9:13 a.m.

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