Automatically Reclaim Memory

Posted in 2011

Summary

A user on IDS 11.50.FC6 / Solaris 10 (sun4v, Sun Fire T200) saw "Attempting to free unused operating system segments" in the online log, after which the engine hung and had to be restarted. He asked whether IDS reclaims memory automatically and whether an OS parameter was to blame. Respondents (Dan Mueller, Art Kagel) said that message only appears when someone runs onmode -F, suggesting a forgotten cron job, and recalled an old Solaris problem with running onmode -F frequently that Sun had reportedly fixed; others asked for OS/patch details and whether Enterprise Replication was in use. The poster denied running onmode -F, and no resolution is recorded in the thread.

Auto-generated by DrWatson from the posts below — may be imperfect; read the full thread.

Topics: Platform-Specific Issues

SHAHZAD SALAM KASI — Fri, 21 Jan 2011 15:27:10 — source: IIUG Forums & Mailing Lists

Hi, Is there any event when IDS tries to (automatically) release / reclaim allocated memory? We faced an issue where IDS tried to release memory but the DB Engine get stuck, and we re-started the instance. Is there any particular OS parameter that might have effected it. We are using 11.50.FC6 on Sun Solaris. Thanks.

↪ replying to SHAHZAD SALAM KASI

SHAHZAD SALAM KASI — Fri, 21 Jan 2011 15:38:21 — source: IIUG Forums & Mailing Lists

in addition, i am posting the following message (in online log file): Attempting to free unused operating system segments. This operation may take several minutes. Thanks.

↪ replying to SHAHZAD SALAM KASI

Dan Mueller — Fri, 21 Jan 2011 15:41:50 — source: IIUG Forums & Mailing Lists

That came fropm your onmode -F -----Original Message----- From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of SHAHZAD SALAM KASI Sent: Friday, January 21, 2011 10:38 AM To: ids@iiug.org Subject: Re: Automatically Reclaim Memory [22515] in addition, i am posting the following message (in online log file): Attempting to free unused operating system segments. This operation may take several minutes. Thanks. ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

↪ replying to Dan Mueller

Alexandre Marini — Fri, 21 Jan 2011 15:54:39 — source: IIUG Forums & Mailing Lists

Hi. Could you post your architecture and Solaris version? That could indicate some trouble (os patch needed), for example. Best regards. Em 21/01/2011 11:41, Dan Mueller escreveu: > That came fropm your onmode -F > > -----Original Message----- > From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of SHAHZAD > SALAM KASI > Sent: Friday, January 21, 2011 10:38 AM > To: ids@iiug.org > Subject: Re: Automatically Reclaim Memory [22515] > > in addition, i am posting the following message (in online log file): > > Attempting to free unused operating system segments. This operation may take > several minutes. > > Thanks. > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > -- Alexandre Marini Tecnologia da Informação - DBA msn: alexandre_marini@hotmail.com SEFAZ-MS / SGI-UGSR / Sistemas IBM-Informix Cert-Info-Mgmt_color <Cert-Info-Mgmt_color.jpg> IBM Certified System Administrator - Informix Dynamic Server V10 / V11

↪ replying to Alexandre Marini

SHAHZAD SALAM KASI — Fri, 21 Jan 2011 16:26:24 — source: IIUG Forums & Mailing Lists

Hi, We are using SunOS 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200 One more thing, we did't execute onmode -F command. Thx.

↪ replying to SHAHZAD SALAM KASI

Art Kagel — Fri, 21 Jan 2011 17:41:47 — source: IIUG Forums & Mailing Lists

That only happens if someone runs onmode -F. What version of Solaris are you running? There used to be a problem with running that onmode frequently on Solaris, but I thought it wad resolved by Sun long ago. Art On Jan 21, 2011 8:38 AM, "SHAHZAD SALAM KASI" <skasi@i2cinc.com> wrote: > in addition, i am posting the following message (in online log file): > > Attempting to free unused operating system segments. This > operation may take several minutes. > > Thanks. > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > --20cf3054ace376edcc049a5ec3c4

↪ replying to SHAHZAD SALAM KASI

Art Kagel — Fri, 21 Jan 2011 17:43:44 — source: IIUG Forums & Mailing Lists

Someone did. Maybe an old cron job you forgot you have. Art On Jan 21, 2011 9:26 AM, "SHAHZAD SALAM KASI" <skasi@i2cinc.com> wrote: > Hi, > > We are using SunOS 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200 > > One more thing, we did't execute onmode -F command. > > Thx. > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > --20cf3054ace3fb8f64049a5ec99c

↪ replying to Art Kagel

SHAHZAD SALAM KASI — Fri, 21 Jan 2011 18:24:58 — source: IIUG Forums & Mailing Lists

We are using SunOS 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200. Thanks.

↪ replying to SHAHZAD SALAM KASI

Madison Pruet — Fri, 21 Jan 2011 18:48:16 — source: IIUG Forums & Mailing Lists

Are you using ER? From: "SHAHZAD SALAM KASI" <skasi@i2cinc.com> To: ids@iiug.org Date: 01/21/2011 12:26 PM Subject: Re: Automatically Reclaim Memory [22527] Sent by: ids-bounces@iiug.org We are using SunOS 5.10 Generic_125100-09 sun4v sparc SUNW,Sun-Fire-T200. Thanks. ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

Glossary

IDS (Informix Dynamic Server)