ST06 Disk Utilization

Dear All,
My SAP PRD is 4.7 EE on Win2003 with Win sp2 on MS SQL 2000 Data Base with 4 GB of RAM.
The performance on the system is very slow and we have planned to go for an upgrade on Physical Memory. The DB resides on the SAN BOX and in connected wih Fiber channel from PRD to SAN (1 GBPS).
We see that the DISK Utilization in ST06 is always 100%. As a rule it should not be more than 50%.
What all things do i need to consider to nail down the issue.
Advise me in resolving the issue.
regards
Sumanth

> We see that the DISK Utilization in ST06 is always 100%. As a rule it should not be more than 50%.
What else do you see in ST06? You see paging in/out a lot? How much swap is configured and used?
Markus

Similar Messages

ST06 Disk Utilization 100%

Dear All,
My SAP PRD is 4.7 EE on Win2003 with Win sp2 on MS SQL 2000 Data Base with 4 GB of RAM.
The performance on the system is very slow and we have planned to go for an upgrade on Physical Memory. The DB resides on the SAN BOX and in connected wih Fiber channel from PRD to SAN (1 GBPS).
We see that the DISK Utilization in ST06 is always 100%. As a rule it should not be more than 50%.
I see that the CPU Idle time is always above 95%. check TOP CPU time and found that everything seems to be normal.
What all things do i need to consider to nail down the issue.
Advise me in resolving the issue.
regards
Sumanth

No cross posting
Read the "Rules of Engagement"
Regards
Juan

Disk Utilization reach 100%

Hi Experts,
I'm using oracle 805, the SAS external storage use only for database. The external storage capacity is 2Tb and 60% is free. I check disk utilization using ST06 show 90-99, Kb transfered/s : 47,527. Then I check the processes in SM50, there is no heavy process, a lot of free work process. I check the avg. response time in ST03 seems normal, around 600-700 ms.
What make the disk utilization high?
thank you
Hardono

Hello,
This monitor shows entire operating system performance data and you are only talking about SAP processes .
Have you check in op system task manager for any server process which could cause bad performance?
Regards.

Windows 8.1 running extremely slow with high disk utilization

My recently purchased Toshiba laptop with Windows 8.1 with 16 GB and I7 processor takes 3 minutes to start new programs. Running programs like Word, PowerPoint, Excel, PDF reader,etc stop in their track with every few minutes and show a circling
cursor. Task Manager shows 100% Disk Utilization all the time.
I ran McKAfee as well as Kaspersky to see if this was a virus/Trojan issue. Both came up with nothing.
At this point the laptop (though spanking new) is completely USELESS and I have no hopes of using it !!!!!
I noticed from many forums that I am not the only one facing this issue. The complaint count for this issue is growing in multitudes.
Please help!

Try these steps.
Open task manager
Click on processes tab. You can see all the apps and processes that are consuming memory.
Click on top of column showing the memory. This will arrange them in ascending or descending order of how much memory is consumed.
Find the ones which is consuming maximum memory
Uninstall if you don’t need the program or app. Re-configure or re-install the software or app if it is an important one.
Hope it helps.

Disk Utilization false alarms from EM dbconsole

Hi,
I have a 10.2.0.1 instance on Windows XP. EM frequently reports disk problems that don't exist. Example below. The disk is no where near 100% so I don't know where EM is getting this. Has anyone else had this problem? Is this a bug?
ex.
Name=op1t1tsr
Type=Host
Host=op1t1tsr
Metric=Disk Utilization (%)
Disk Device=1 E:
Timestamp=Jan 27, 2008 2:31:18 AM CST
Severity=Critical
Message=Disk Utilization for 1 E: is 99.97%
Rule Name=Host Availability and Critical States
Rule Owner=SYSMAN

No, E: is an internal drive where the datafiles for the database actually reside.
One twist however, is that my windows roving profile attenpts to map E to another location. On this machine this does not happen since there is a local E driver but I wonder if the EM agent is somehow confused by this. In the Windows explorer the E drive actually displays the mapped location name, but when you drill down you see the local drive.

Enterprise manager alert on disk utilization

hello..
i was wondering if you guys here know what the "3" means?
Disk utilization for 3 F is 90%, crossed warning (80) or cristical (95) threshold.
I understand that "F" means drive "F:" but what does 3 means?
thanks,
peacock

Well, there is more than services to run Oracle on Windows. To do administrative works using EM, the user must be configured in the group, "logon as batch job" . But neither home or home premium has the option to manage groups. Additionally, as Ed mentioned, oracle never supported any of its products over any "home" edition of the o/s so using it for Oracle would be surely causing issues which in general would be bizarre only.
Aman....

Grid Control showing excessive amount of disk utilization.

Hi Folks,
I understand that Oracle doesn't support their products 100% on non Oracle VMs, but I thought I might take a stab at it.
I decided to stick with a simple installation of Oracle Grid Control running on a Windows 2003 R2 32 bit os, here are the steps I took.
1. Run Guest OS Windows 2003 R2 32 bit on a Windows 2008 x64 running Hyper-V (Yes I know why not EL5 running XEN, long story)
2. Install Grid Control with Database and Agent versions 10.2.0.2.1
3. Patch agent and oms to 10.2.0.5.0
4. Some minor issues, but managed to get by those.
- First off EM Website shows down, got to take a look at that, probably need to fix the beacon, not sure!
Problem:
- Grid shows that the host running em is over 100% disk utilization.
- According to Metalink this is a known bug in Windows 2000 Performance Counters (not 2003?)
- More specially Microsoft KB article Q310067.
- Metalink Doc Id: 303788.1
- Note, I'm running 2003 on a Hyper-V Guest, so anything can go wrong!
The specific error is:
Metric               Disk Device Busy (%)
Disk Device               0 C:
Severity               Critical
Alert Triggered          Jun 3, 2009 7:57:54 PM
Last Updated          Jun 4, 2009 3:48:48 PM
Acknowledged          No
Acknowledged By     n/a
Message               Disk Utilization for 0 C: is 587.86%, crossed warning (80) or critical (95) threshold.
More info:
- Guest is running on a Dual Quad Core Xeon System with 16 GB of RAM
- Guest has dedicated 4096MB of ram
- Guest has dedicated 2 CPUS
- Guest is configured with a Virtual Disk (specifically partition c:\) to be on local Hyper-V disk array
- Windows 2008 Hyper-V host disk array is in a RAID 5 configuration running 10k SAS drives
- Windows 2008 Hyper-V host utilization is literary at most 5% (current is 1%)
- Windows 2008 Hyper-V disk utilization according to graphs is showing 100KB/s usage (less than 1%)
Temporary solution is to turn off the metric, but not sure if that's such a good idea.
- Note that 11g EM and 10g EM running on Hyper-V server had the same issue.
- Note that 11g EM and 10g EM running without visualization had no issues.
Any thoughts?

It may be related to Bug 8677212: BACKUP INFORMATION FOR SOME DATABASES SHOWS INCORRECTLY
Although bug info says it for HP-UX, I've also seen the same problem on Grid Control 10.2.0.5 running on Solaris.
You may want to apply 10.2.0.5.4 Grid Control Patch Set Update (PSU) [ID 1139563.1] to fix it.
Best Regards,
Gokhan Atil
If this question is answered, please mark appropriate posts as correct/helpful and the thread as closed. Thanks

High disk utilization every 24 hours

Hi all,
While troubleshooting an user's complain about slow access to his mailbox on a Windows 2012/Exchange 2013 environment, I came across this interesting behavior:
Disk utilization on the server will increase from 100KBps to 3000KBps (on average) and stay high for a good 10 hours or so. Then disk activity will go down for exactly 24 hours from the time it was up and increase again for another cycle.
Basically, no matter how long it takes to go down, it will increase again 24 hours later. Looking at Perfmon and Resource Manager all I could see during both periods is that store.worker.exe is always on top, and READ has higher values. The issue does not
appear to be related to business hours / backup window / client access to exchange, as it occurs at different times of the day and changes everyday.
I believe it has something to do with an internal maintenance/reporting/monitoring feature of Exchange 2013, as it happens on 3 Exchange environments we manage, completely apart from each other.
Microsoft Exchange Health Manager service has already been disabled as well as scheduled tasks under Microsoft/Windows/PLA and they all proved not to make a difference.
Any ideas out there?
Diego de Azevedo IT Analyst - MCSE, MCITP

Good Call. I just spent the last few hours going over 550,000 events.
I reviewed the application log for a 24 hour period and here is what I noticed:
During the high disk queue period there are lots of entries for MsExchangeMailboxAssistants. For each of the 15 mailbox databases.
These only run during the High Disk Queues window.
TopN Words
Store DS Maintenance
Sharing Policy
SharePoint Signal Store
Search Index Repair Time Based
People-centric triage
People Relevance
Managed Folder Mailbox
Mailbox Processor
Mailbox Association Replication
Calendar Repair
People Relevance Feeder
Orphaned Mailbox Purge
Here are the examples of the log entries for Event ID 9017
Service MSExchangeMailboxAssistants. TopN Words Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Store DS Maintenance Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Sharing Policy Assistant. for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. SharePoint Signal Store Assistant for database *** is entering a work cycle. There are *** mailboxes on this
database.
Service MSExchangeMailboxAssistants. Search Index Repair Time Based Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. People-centric triage for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. People Relevance Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Managed Folder Mailbox Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Mailbox Processor Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Mailbox Association Replication Assistant for database *** is entering a work cycle. There are *** mailboxes
on this database.
Service MSExchangeMailboxAssistants. Calendar Repair Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
There are 3039 of these messages as well:
The people relevance feeder for mailbox *** picked 16 sent items to process. Number of sent items successfully processed 16 and number of sent items failed to be processed 0. Total time taken to process this
mailbox 4539.8548.
It appears the purge of orphaned mailboxes happens only at this time as well .
These run throughout the day and not just 24 hours after the last restart/switchover.
Calendar Sync
Junk Email Options
Probe Time Based
Store Maintenance
Examples of the Event ID 9017
Service MSExchangeMailboxAssistants. Calendar Sync Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Junk Email Options Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Probe Time Based Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
Service MSExchangeMailboxAssistants. Store Maintenance Assistant for database *** is entering a work cycle. There are *** mailboxes on this database.
So how do I get the first group of maintenance tasks to run throughout the day, or at different times, or at least not all at the same time for all 15 databases?
Thanks!!
Well, its all workload based, so I don't think you can readily adjust that.
I'm more inclined to look at the specs of the mailbox servers. Are they up to the task and have they been vetted with the Mailbox Calculator?
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Disk Utilization for 0 C: D: E: is 99.61%, crossed warning (80) or critical

Hi,
I have windows 2008 R2 64 bit OS and database version is 11.1.0.7.0 64 bit ...
I got the below error via EM.
Target Name=ORSDEV.xxxdomain.com
Target Type=Host
Host=ORSDEV.xxxdomain.com
Metric=Disk Device Busy (%)
Metric Value=99.61
Disk Device=0 C: D: E:
Timestamp=Mar 21, 2012 7:41:58 PM SGT
Severity=Critical
Message=Disk Utilization for 0 C: D: E: is 99.61%, crossed warning (80) or critical (95) threshold.
Notification Rule Name=Host Availability and Critical States
Notification Rule Owner=SYSMAN
Notification Count=1
1.Can any one tell how to trace this warning and where to check for this alert ?
2.what is the meaning of Disk Utilization for 0 ?
3.How to identify the problem and resolve the issue in this case ?
Thanks & Regards,
Vikash (Junior DBA)

Hi Vikash,
This "Disk Utilization" metric actually points to hos busy is the disk device (in percentage) and not a percentage of disk capacity. As a matter of fact, in the 11.1. Database Control, it has been renamed to "Disk Device Busy(%)".
Regarding of the meaning of a disk busy, it is the percentage of time the physical disk is active. And it may no be a problem, as you can see at http://sunsite.uakom.sk/sunworldonline/swol-08-1999/swol-08-perf.html : "Complex systems can be 100 percent busy, but still have a lot of spare capacity".
On the other hand, to check how "full" a Disk is, the metric 'Filesystem Space Available (%)' can be used. This metric represents the percentage of free space available in the file system. Also, the Filesystem Size (MB) checks the total space (in megabytes) allocated in the file system.
Hope this helps.
Thanks,
Cris

Investigating disk utilization issue with performance monitor

Hello
im using windows 2008r2 server, lately the server became very slow.
i ran performance monitor with the "avg disk queue length" counter and it seems that is very high, how can i tell exactly wich process is consuming all the disk utilization?
Thanks!
Guy

Hi,
Thanks for your post.
Please refer to this article about hunting down hard disk resource hogs
http://www.techrepublic.com/article/how-to-hunt-down-hard-disk-resource-hogs/
Regards.
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How does GC calculate the Disk Utilization metric.

Hi,
I am getting the following error:
Name=NT000786.oak.zone1.progress-energy.com
Type=Host
Host=NT000786.oak.zone1.progress-energy.com
Metric=Disk Utilization (%)
Disk Device=3 F:
Timestamp=Dec 20, 2005 12:26:11 PM EST
Severity=Critical
Message=Disk Utilization for 3 F: is 95.78%
Rule Name=Host Availability and Critical States
Rule Owner=SYSMAN
This is a 410 GB disc with 266 GB used. The oracle datafile only use 7 GB on this disc; the rest is for Symantic backup!

Check the Notification Rule setting of Disk Utilization (%) in Preferences -> Notification -> Rules. Select Host Availability and Critical States to View or Edit.
There may be a situation where OEM may not understand the disk space while checking available space.
See this post and response
Re: Data Guard Bug, which patch to fix?

Solaris 8 Patch Cluster 200801 installation / disk utilization spikes

Hello All,
Since we installed the latest Patch Cluster patch our disk utilization has shot up substantially. Is there anyone having same experience? If you do, could you please help us to identify some areas to take a look?
Thanks very much.
Yi

hi again. i just fixed my problem. apparently when i unzipped the file and then burned it onto cd...the data got corrupted. i fixed it by copying the zip file onto cd and then extracting the patches onto the solaris machine.

EM Alert: Critical: server - Disk Utilization for 1 D: is 99.8

hello!
in the last day's i receive the following error message every 2 or 3 hours:
Name=server
Typ=Host
Host=server
Metrik=Disk Utilization (%)
Disk Device=1 D:
Zeitstempel=12.04.2010 12:29 Uhr CEST
Dringlichkeit=Kritisch
Nachricht=Disk Utilization for 1 D: is 99.81%
Regelname=Host Availability and Critical States
Regeleigentümer=SYSMAN
first i thought it's because the "db_recovery_file_dest_size" parameter was to small, because it was set to 10gb and the FRA was almost 10gb. then i raised the parameter (without restarting the database), but the same problem after a few hours.
select * from v$recovery_file_dest;
d:\FRA\ 21474836480 10648922624 10073876992 458
is it necessary to restart the database after reseting this parameter?
thx for your help!
ciao,
christian

There are many bugs on metalink on this.
Better to raise a SR with OSS.
Bug 6809811: DISK UTILIZATION (%) REPORTS 99.8% WHEN THERE IS PLENTY OF SPACE
Regards
Rajesh

Top 10 Disk Utilization Report

Hello,
Could some one help me how to Pull Top 10 Disk Utilization Reports (Monthly) from SCOM 2012.
I have checked different forums but no luck.

Hi,
This is a related blog for your
reference.
Setup a Disk Report in SCOM 2012
http://scom-2012.blogspot.com/2012/07/setup-disk-report-in-scom-2012-part-2.html
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About "disk utilization" and "cpu utlization"

I am writing an agent with snmp protocol. I want to konw the system's current "cpu utilization and disk utilization". But I have no choice now but use the system call:"df -k" and "vmstat". Can ANYONE show me another way??

You might want to read about the kstat interfaces in Solaris . You can get the required statistics using kstat() calls.
Thanks,
Prajeesh

ST06 Disk Utilization

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