What effect does "GATHER_SCHEMA_STATS" have on SQL AREA??

Hi, all.
The database is 2 node RAC database (10.2.0.2.0) on 32 bit windows 2003 EE SP1.
Recently, the database has been suffering performance degrade due to
"library cache - related wait events" such as library cache pin and library cache lock. I also could see global cache related wait events(RAC).
I found that the default job on installation, "GATHER_STATS_JOB", is causing
a lot of invalidations of parsed sqls. Depending on the free memory of shared pool,
the 2 node RAC database hangs, even not allowing "log switch".
I think GATHER_STATS_JOB is very expensive in a RAC environment
because it gathers statistics all objects in a database.
Therefore, I disabled "GATHER_STATS_JOB". I could see the improvement
in terms of "sql area usage".
As an alternative, I would like to gather only application schema statistics
by using the following procedure.
-->DBMS_STATS.GATHER_SCHEMA_STATS('NMSUSER',DBMS_STATS.AUTO_SAMPLE_SIZE);
My question is the following.
● After gathering applicaion schema statistics, all application related SQL
statements are invalidated and are required to be re-parsed(hard parsing)??
The database is based on All-Rows optimizer mode (CBO).
Thanks and Regards.

Hi,
After gathering applicaion schema statistics, all application related SQL statements are invalidated and are required to be re-parsed(hard parsing)??Yes and no... it depends on the call of DBMS_STATS.GATHER_SCHEMA_STATS ... you can specify not to invalidate your parsed statements...
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_stats.htm#sthref8114
Parameter:
no_invalidate Does not invalidate the dependent cursors if set to TRUE. The procedure invalidates the dependent cursors immediately if set to FALSE. Use DBMS_STATS.AUTO_INVALIDATE. to have Oracle decide when to invalidate dependent cursors. This is the default. The default can be changed using the SET_PARAM Procedure.Regards
Stefan

Similar Messages

What effect does it have to Mark an e-mail message?

What effect does it have to mark or flag an e-mail message in mail?

Flagging an email message is just a way to help you find it later. In the mac mail program, you can find flagged messages in a special folder.

What effect does velocity have on sound?

im fairly new to java sound, and i was playing around with channels and notes, i made myself a nice little program that plays 1-16 notes at the same time on the 1-16 channels of an midi synthesizer.... anyways, all the notes are set randomly, but the velocity stays constant? would i notice any difference (between the same note) if i changed the velocity? what effects if any does the velocity have?

Velocity is how hard the key was struck. It can have all sorts of effects on the sound, but mostly it affects the volume.

What effect does closed credit card accounts w/ a balance I'm paying off have on my credit score.

I've closed three credit card accounts and I'm paying off the balance on them What effect does that have on my credit score?

Don't think it will take a hit right now. It stays on your report for 10 years after you close it. Even though you pay it off, removing the cards will raise your available credit, leading to a higher UTIL %. But UTIL % is overrated. Long as its below 30%, should be fine.

What effect does grouping employee subgroups have on personnel calculation

Hi Experts,
Please explain What effect does grouping employee subgroups have on personnel calculation rules?
Thanks,
Rashmi

Hai..
Personnel Management
Personnel Administration
Payroll Data
Basic Pay
Define EE Subgroup Grouping for PCR and Coll.Agrmt.Prov.
Check F1 for PCR.
Now open MODT PCR in PE02. U can find *, 1,2,3, etc... So these are the values which u had defined in the above table..
It means for each ES grouping u want the system to process differently....
Hope its clear now

We got a new Apple TV for Christmas and it works wonderful. However, my question is this. We are on a satelitte internet system and our bandwidth is limited. Can anyone tell me what effect it will have on using up my 10 megs of bandwidth?

We got a new Apple TV for Christmas and it works wonderful. However, my question is this. We are on a satelitte internet system and our bandwidth is limited. Can anyone tell me what effect it will have on using up my 10 megs of bandwidth? If I run over the 10 mgs, the service either slows way down until it is reset on the first of the next month or I have to purchase additional bandwidth and it can get expensive.
Any information would be greatly appreciated.

If you only have a 10MB limit on the Internet connection you might as well not have Internet access and certainly should not attempt to stream anything.
If the limit is 10GB, then you will need to be careful with streaming as most video is 1-3GB for a one hour show.

What kind of online backup tools does iCS have? And are other backup mechanisms supported?

What kind of online backup tools does iCS have?
And are other backup mechanisms supported?

With iCS2.x, the admin utilities provide `csbackup` command to backup
individual calendar or the whole calendar database. Solstice/Legato
backup functionality is also available. The advantage with the Legato
backup is that the administrator can, in addition, perform backup per user.
(Legato backup utilizes csbackup and csrestore for calendar backup/restore.)
Please refer to the section on Backup and Restore Procedures in the
iPlanet Calendar Server Administration Guide:
http://developer.iplanet.com/docs/manuals/calendar/ics20/calag/calagadm.htm#1062608
Although it is not yet documented in the 2.x Admin guide, `csbackup -l`
is the command used for initiating Legato backup directory structure (refer to
Step 1 under Backing Up Calendar Server Data).

What kind of online backup tools does iCS have?
And are other backup mechanisms supported?

With iCS2.x, the admin utilities provide `csbackup` command to backup
individual calendar or the whole calendar database. Solstice/Legato
backup functionality is also available. The advantage with the Legato
backup is that the administrator can, in addition, perform backup per user.
(Legato backup utilizes csbackup and csrestore for calendar backup/restore.)
Please refer to the section on Backup and Restore Procedures in the
iPlanet Calendar Server Administration Guide:
http://developer.iplanet.com/docs/manuals/calendar/ics20/calag/calagadm.htm#1062608
Although it is not yet documented in the 2.x Admin guide, `csbackup -l`
is the command used for initiating Legato backup directory structure (refer to
Step 1 under Backing Up Calendar Server Data).

What software does apple have to replace DVD Studio Pro

what software does apple have to replace DVD Studio Pro. have a new imac 27" late 2012 and after data transfer DVD Studio Pro does not work. What can I do? Would it be advisable to go back on the OS to a older vision OS Where DVD Studio Pro was working? Help!!!

Bigdog30 wrote:
what software does apple have to replace DVD Studio Pro.
Afraid they don't have anything to replace DVD SP. Your alternatives are Adobe Encore (which is EOL) or Toast, or IDVD (which can still be found in boxed sets of iLife).
But getting back to DVD SP and your data transfer, what do you mean by that? What exactly did you do and what happened with the application? I'm running it on 10.7 and it works, but it's from the FCS3 suite; is yours FCS2?.
Russ

HT203167 What software does Apple have to manage Dvd to ipod conversion etc

what apple software supports Dvd to ipod/ipod to computer conversions etc

Bigdog30 wrote:
what software does apple have to replace DVD Studio Pro.
Afraid they don't have anything to replace DVD SP. Your alternatives are Adobe Encore (which is EOL) or Toast, or IDVD (which can still be found in boxed sets of iLife).
But getting back to DVD SP and your data transfer, what do you mean by that? What exactly did you do and what happened with the application? I'm running it on 10.7 and it works, but it's from the FCS3 suite; is yours FCS2?.
Russ

When I issue the 'Force group Settings' command what effect will this have on existing flows? Do I need to disable WCCP prior to issuing this command on the affected WAE's?

Hi WAAS Experts,
I have a query, when I issue the 'Force group Settings' command what effect will this have on existing flows? Do I need to disable WCCP prior to issuing this command on the affected WAE's?
Thanks,
Shankar K

Hi Shankar,
A change of classifier/policy on the WAE is not affecting the existing flows so you shouldn't need to disable WCCP if you want to force group settings there.
Regards,
Nicolas

Is JavaFx an installed app for desktop? And what feature does it have?

Hi everyone,
I am curious to a few things about this JavaFX and cant seem to find any answer anywhere???
Does a JavaFX application actually install to your OS?
Does JavaFX have features such as Adobe AIR in order to work with the computers file system and monitor whether or not there is an internet connect?
Or does JavaFX only offer features that are common to all three platforms it suplies for? Such as display and simply user interface logic for games and such?
And if not, if the developer is only creating one application, that can be displayed on three different platforms. What happens if the application preforms a desktop specfic feature, what happens when this feature is preformed on the other two devices? an error?
Please if anyone could solve theses questions or even one of these questions, that would be brilliant!!
Cheers for everybody help in advance
IrishJava

Does a JavaFX application actually install to your OS?More or less. Running a JavaFX application (applet or desktop) makes Java to cache the runtime and the provided jar files in a directory specific to Java itself (it behaves like a regular Java application). You can see that when typing {color:#8000FF}javaws -viewer{color} on the command line.
Does JavaFX have features [...] file system [...] internet connect?JavaFX can use Java code, so, if your application has the correct rights (Java is quite strict with security), you can do anything Java can do.
does JavaFX only offer features that are common to all three platformsNo. There is a mobile and a common profile (seen in the API). The mobile one is more restrictive (eg. no effects like shadows or reflection) and has strong restrictions on the Java features too (limited to MIDP subset). If you want to make an application working on all platform, you are indeed restricted to the lower common denominator. Or make conditional code, checking the current profile and using advanced features only on the desktop/applet.
If you try and use a non-supported feature, I think there is an exception that can be caught, but by JavaFX has only unchecked exceptions, so if not caught, exceptions are ignored and the feature isn't used.

Re: Satellite Pro L650-1CH - What CPU does it have?

Hi
Please tell me what CPU does L650-1CH have... I was convinced it has i5-450M, but the [product page|http://uk.computers.toshiba-europe.com/innovation/product/Satellite-Pro-L650-1CH/1090501/toshibaShop/false/] says i5-450M in one place and i5-430M in another... ???
Thanks

have a look on this site:
http://www.misco.co.uk/applications/SearchTools/item-details.asp?EdpNo=473719&Tab=2&NoMapp=0
Anyway, before buying it you can check the Cpu type yourself at the computer store

When the shuffle dies what purpos does it have?

ok guys here is the scoop. it died. i'll just buy a new one. but i don't want to trash it. what fun can i have with it?
i am thinking money clip or a hair clip. but i want you to get creative. what can i do with it now?

MAybe call / visit your local Apple Store?
Here's a list of the locations in Florida:
http://www.apple.com/retail/storelist/
Altamonte Springs, Altamonte
Aventura, Aventura
Brandon, Brandon
Boca Raton, Boca Raton
Estero, Coconut Point
Fort Lauderdale, The Galleria
Jacksonville, St. Johns Town Center
Miami, The Falls
Miami Beach, Lincoln Road
Naples, Waterside Shops
Orlando, Florida Mall
Orlando, Millenia
Palm Beach Gardens, The Gardens Mall
Tampa, International Plaza
Wellington, Wellington Green
Cheers,
Awfers

What effect does recording at 24 bit..44.1 have when bouncing to 16-bit CD

Hi,
Before I really start recording on Logic, I'd like to know if someone could clear this up for me.
I know CD quality is 16 bit 44.1. So if I know I am going to distribute my recordings onto CD in the end, why should I record at 24-bit?
and if i do record at a higher resolution than CD quality, and I mix the recording as hot as I can w/o distortion, what will happen to my quality when I mix to cd??

Re: Sample rates - 48k. Wow, that goes against everything I've read in years about the greater potential for aliasing artefacts in "non-multiple" SR conversion. Esp. software.
It depends on the software you are using for the
conversion. Many of the DAW's do a less than
steller job at this, Logic being one of the worst
at the moment. ( I have a feeling that the new
version of Logic will address this problem). As
it turns out Adobe and Bias make software
that does an excellent job at sample rate conversion
with no alaising artifacts. Adobe's software
is not available for the Mac and Bias's Peak Pro
is on the expensive side.

What effect does Audit logging have on system performance?

Hi
I'm aware that the question might not be easy to answer, but is there any rule of thumb or any way to calculate what the enabling of the Security audit filtered on all users in all clients would have on the performance of the system?
We are trying to get all of our business to use the same audit logging settings, but we need to be able to show how performance might be affected by this change.
Thanks
Tomas

Hi Thomas,
that is not hard to tell, but impossible to tell....
Please refer to SAP note #429343 .
Suggestion: switch on the log on one of your servers (dynamic switch) and trace the
impact during normal daily business.
You will have then a basis for your decision.
If you activate it then generally, consider that every server should write into its own (local) directory to avoid big performance issues (network, file system).
b.rgds,
Bernhard

What effect does "GATHER_SCHEMA_STATS" have on SQL AREA??

Similar Messages

Maybe you are looking for