Wait class Application

what is Wait class Application?
give guide me

Hi,
Application is one of a classification of Wait class events along with network,commit,idle,user i/o.
Application: locks waits caused by row level locking or explicit lock commands
Have a look into this link.
http://youngcow.net/doc/oracle10g/server.102/b14211/autostat.htm
Regards
Jafar

Similar Messages

Wait class 'commit' consuming significant database time.

Hi
My awr report was showing that the log file sync as the top wait event.I can also see additional message saying that wait class 'commit' consuming significant database time.Can any one suggest me what are the tuning things i need to consider for this wait class 'LOG FILE SYNC'
Thanks

Be very careful about this.
Follow this only if you can afford to lose some data in case of instance failure
(eg death of the instance from a bug, server panic/reboot, power failure etc).
Oracle's normal behaviour is to guarantee that every committed transaction
IS available by ensuring that it is in the redologs and reapplying it if necessary
in case of an instance failure and recovery or media recovery.
A Commit NOWAIT means that there is a possibility, however slight, that
the last few transaction(s) might not have gotten into the redo logs at the time
of instance failure.
Your application / analysts must be able to identify transactions that are 'lost'
and reapply them after you restart a crashed instance.

Wait Class

Hi,
As per documents In general, the addition of wait classes helps direct the DBA more quickly toward the root cause of performance problems.
How could i trace the root cause of performence problems if it is related to wait class?
Thanks,

userpat wrote:
Hi,
As per documents In general, the addition of wait classes helps direct the DBA more quickly toward the root cause of performance problems.
How could i trace the root cause of performence problems if it is related to wait class?
Thanks,I am not completely sure that I understand your question. The wait class gives you an approximate idea of where the performance problem will be found. You must then further investigate the wait events in that wait class. There are of course potential problems with starting at the wait class (some wait classes have 2 wait events, while others have many - that could throw off the search for the problem that is impacting performance the most), but at least it provides a starting point. To give you an idea of the wait events in each wait class, here is a SQL statement that was executed on Oracle Database 11.1.0.7:
SQL> DESC V$EVENT_NAME
Name                                      Null?    Type
EVENT#                                             NUMBER
EVENT_ID                                           NUMBER
NAME                                               VARCHAR2(64)
PARAMETER1                                         VARCHAR2(64)
PARAMETER2                                         VARCHAR2(64)
PARAMETER3                                         VARCHAR2(64)
WAIT_CLASS_ID                                      NUMBER
WAIT_CLASS#                                        NUMBER
WAIT_CLASS                                         VARCHAR2(64)
SELECT
SUBSTR(NAME,1,30) EVEMT_NAME,
SUBSTR(WAIT_CLASS,1,20) WAIT_CLASS
FROM
V$EVENT_NAME
ORDER BY
SUBSTR(WAIT_CLASS,1,20),
SUBSTR(NAME,1,30);
EVEMT_NAME                     WAIT_CLASS
ASM COD rollback operation com Administrative
ASM mount : wait for heartbeat Administrative
Backup: sbtbackup              Administrative
Backup: sbtbufinfo             Administrative
Backup: sbtclose               Administrative
Backup: sbtclose2              Administrative
OLAP DML Sleep                 Application
SQL*Net break/reset to client Application
SQL*Net break/reset to dblink Application
Streams capture: filter callba Application
Streams: apply reader waiting Application
WCR: replay lock order         Application
Wait for Table Lock            Application
enq: KO - fast object checkpoi Application
enq: PW - flush prewarm buffer Application
enq: RC - Result Cache: Conten Application
enq: RO - contention           Application
enq: RO - fast object reuse    Application
enq: TM - contention           Application
enq: TX - row lock contention Application
enq: UL - contention           Application
ASM PST query : wait for [PM][ Cluster
gc assume                      Cluster
gc block recovery request      Cluster
enq: BB - 2PC across RAC insta Commit
log file sync                  Commit
Shared IO Pool Memory          Concurrency
Streams apply: waiting for dep Concurrency
buffer busy waits              Concurrency
cursor: mutex S                Concurrency
cursor: mutex X                Concurrency
cursor: pin S wait on X        Concurrency
Global transaction acquire ins Configuration
Streams apply: waiting to comm Configuration
checkpoint completed           Configuration
enq: HW - contention           Configuration
enq: SQ - contention           Configuration
enq: SS - contention           Configuration
enq: ST - contention           Configuration
enq: TX - allocate ITL entry   Configuration
free buffer waits              Configuration
ASM background timer           Idle
DIAG idle wait                 Idle
EMON slave idle wait           Idle
HS message to agent            Idle
IORM Scheduler Slave Idle Wait Idle
JOX Jit Process Sleep          Idle
ARCH wait for flow-control     Network
ARCH wait for net re-connect   Network
ARCH wait for netserver detach Network
ARCH wait for netserver init 1 Network
ARCH wait for netserver init 2 Network
ARCH wait for netserver start Network
ARCH wait on ATTACH            Network
ARCH wait on DETACH            Network
ARCH wait on SENDREQ           Network
LGWR wait on ATTACH            Network
LGWR wait on DETACH            Network
LGWR wait on LNS               Network
LGWR wait on SENDREQ           Network
LNS wait on ATTACH             Network
LNS wait on DETACH             Network
LNS wait on LGWR               Network
LNS wait on SENDREQ            Network
SQL*Net message from dblink    Network
SQL*Net message to client      Network
SQL*Net message to dblink      Network
SQL*Net more data from client Network
SQL*Net more data from dblink Network
AQ propagation connection      Other
ARCH wait for archivelog lock Other
ARCH wait for process death 1 Other
ARCH wait for process death 2 Other
ARCH wait for process death 3 Other
ARCH wait for process death 4 Other
ARCH wait for process death 5 Other
ARCH wait for process start 1 Other
Streams AQ: enqueue blocked du Queueing
Streams AQ: enqueue blocked on Queueing
Streams capture: waiting for s Queueing
Streams: flow control          Queueing
Streams: resolve low memory co Queueing
resmgr:I/O prioritization      Scheduler
resmgr:become active           Scheduler
resmgr:cpu quantum             Scheduler
ARCH random i/o                System I/O
ARCH sequential i/o            System I/O
Archiver slave I/O             System I/O
DBWR slave I/O                 System I/O
LGWR random i/o                System I/O
BFILE read                     User I/O
DG Broker configuration file I User I/O
Data file init write           User I/O
Datapump dump file I/O         User I/O
Log file init write            User I/O
Shared IO Pool IO Completion   User I/O
buffer read retry              User I/O
cell multiblock physical read User I/O
cell single block physical rea User I/O
cell smart file creation       User I/O
cell smart index scan          User I/O
cell smart table scan          User I/O
cell statistics gather         User I/O
db file parallel read          User I/O
db file scattered read         User I/O
db file sequential read        User I/O
db file single write           User I/O
...So, if the User I/O wait class floats to the top of the wait classes between a known start time and end time, and the Commit wait class is at the bottom of the wait classes when comparing accumulated time, it probably would not make much sense to spend time investigating the wait events in the Commit class... until you realize that there is a single event in the Commit wait class that typically contributes wait time, while there are many in the User I/O wait class.
Charles Hooper
Co-author of "Expert Oracle Practices: Oracle Database Administration from the Oak Table"
http://hoopercharles.wordpress.com/
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc.

The definition of base class Application was not found.

Hello:
I have been coding in Flash Builder Burrito and publishing to my Xoom for a few weeks. All of a sudden at the end of the day I'm getting this compiler error which says:
1017: The definition of base class Application was not found. AppName.mxml /AppName/src Unknown Flex Problem
I sometimes hit the wrong key with I try to copy and paste and all of a sudden a new window will open for source of a default component which I never wanted to edit. I'm afraid I somehow deleted or modified the default class defnition of Application?
I don't understand why this would come out of the blue, I was working on a function within a class that was drawing points ... Then all off a sudden I'm getting this error and it's driving me nuts.
I tried to reinstall FB Burrito on my Mac, but after all that work it still says the same thing. Wouldn't it replace the default class defs?
Please help!

Wow, some really strange behavior.
OK, so here is what I'm going through. I reinstall, import the project and compiles.
Then I uncomment the new section which contains the following code:
lineStyle(1.0,0x8ea4bf);
var line_commands:Vector.<int> = new Vector.<int>();
line_commands.push(GraphicsPathCommand.LINE_TO, GraphicsPathCommand.LINE_TO, GraphicsPathCommand.LINE_TO, GraphicsPathCommand.LINE_TO);
var line_coord:Vector.<Number> = new Vector.<Number>();
line_coord.push(0,0, newW, angle, newW, (newH+angle), 0, newH);
drawPath(line_commands, line_coord);
I get 3 diffrent errors, which lead up to the error listed in the topic.
At first it says that "int" isn't a valid type and it points to this line:
var line_commands:Vector.<int> = new Vector.<int>();
Then I take int out so the line looks like this:
var line_commands:Vector = new Vector();
Then it says I can't nest classes and it points to the main MXML. I go to the main MXML then the error switches to say "The definition of base class Application was not found.".
I did figure out how to fix this with out reinstalling. I have to delete the project from my list (making sure to comment out the code above), then re-launch FB Burrito, then re-import the project and it works.
This is way nuts! I dont understand ... am I crazy?

Wait event "virtual circuit wait" in wait class "Network" was consuming sig

Hello,
We are facing this problem when there are 2 queries try to run at the same time.
The first query takes longer to finish so 2nd has to wait for 1st to be finished and then only 2nd starts. It seems the jam is at netowork instead of server.
I want to make sure before I start testing on network.
I get following :
Wait event "virtual circuit wait" in wait class "Network" was consuming significant database time. 98.4
Wait class "Network" was consuming significant database time.
and recommendations is stated as :
Investigate the cause for high "virtual circuit wait" waits with P1 ("circuit#") value "21" and P2 ("type") value "2".
I am checking OEM.
Thanks,
Shashi.

Hello Sybrand,
Can you suggest some changes to be done to test ?
Here is my shared server config :
SQL> show parameter SHARED
NAME TYPE VALUE
hi_shared_memory_address integer 0
max_shared_servers integer
shared_memory_address integer 0
shared_pool_reserved_size big integer 135895449
shared_pool_size big integer 0
shared_server_sessions integer
shared_servers integer 1
Thanks,
Shashi.

Waiting for Application Under Test and Xceed Contol Random mtm.exe hang

Can someone please advise as to why mtm.exe has basically become unusable to our QA team. More time is spent end tasking the application and rebooting than any good it is doing. We are consistently getting waiting for applications under test
(reason for this unknown) and the test runner locks up completely on any dynamic xceed control. We are using VS 2013.4
Here are a few examples of exceptions from the trace log:
ClassName [SysListView32], RuntimeId [404482_0_[MSAA]ControlType='List' && ClassName='SysListView32']] (window handle [404482]) instead of [Name [mtm.exe *32], ControlType [ListItem], NativeControlType [list item], ClassName [SysListView32], RuntimeId
[404482_22_[MSAA]Name='mtm.exe *32' && ControlType='ListItem']] (window handle [404482])
E, 8884, 11, 2015/04/20, 15:18:47.521, 945055538520, mtm.exe, Exception: System.ArgumentException
Message: Value does not fall within the expected range.
Stack Trace:    at Accessibility.IAccessible.get_accRole(Object varChild)
   at Microsoft.VisualStudio.TestTools.UITest.Extension.Msaa.AccWrapper.get_RoleInt()
BaseExceptionMessage: Value does not fall within the expected range.
V, 8884, 56, 2015/04/20, 15:18:48.412, 945058488972, mtm.exe, BitmapFileSaver: Image.FromHbitmap created image with WxH: 1920x1080. Saving to file: 'C:\Users\jmcmahon\AppData\Local\Temp\UITestLogs\LastRun\5f2a1797-9e7e-4230-b314-8f72f386cd71.Png'
I, 8884, 49, 2015/04/20, 15:18:48.415, 945058498132, mtm.exe, Msaa.AccWrapperFromWindow: window handle [337612]
E, 8884, 49, 2015/04/20, 15:18:48.417, 945058507133, mtm.exe, Exception: System.NullReferenceException
Message: Object reference not set to an instance of an object.
Stack Trace:    at Microsoft.VisualStudio.TestTools.UITest.Extension.Msaa.AccWrapper.get_RoleInt()
BaseExceptionMessage: Object reference not set to an instance of an object.

Hi Jameebug,
You could share the log fine on the OneDrive and share the link here.
There is a link about enable tracing for MTM that may benefit you:
# Enable Tracing for MTM
http://blogs.msdn.com/b/gautamg/archive/2011/01/20/how-to-enable-tracing-for-mtm.aspx
Regards
Starain
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User I/O Wait class in Top 5 Timed Foreground Events

Hi Mates
In my awr report in Top 5 Timed Foreground Events, i get the below event list
Event     Waits     Time(s)     Avg wait (ms)     % DB time     Wait Class
DB CPU          25,721          58.29
db file sequential read     67,491,952     7,710     0     17.47     User I/O
db file scattered read     7,147,112     2,560     0     5.8     User I/O
log file sync     2,926,748     1,526     1     3.46     Commit
direct path read     342,745     834     2     1.89     User I/O
So does it means that there is a issue with disk I/O on my box. since the wait class is showing as User I/O.
I am running the single instance database with oracle version 11.2 on IBM AIX server.

huzaifa wrote:
Hi Mates
In my awr report in Top 5 Timed Foreground Events, i get the below event list
Event                              Waits       Time(s)       Avg wait (ms)     % DB time      Wait Class
DB CPU                                             25,721                               58.29
db file sequential read           67,491,952        7,710          0                         17.47      User I/O
db file scattered read           7,147,112        2,560          0                          5.8      User I/O
log file sync                           2,926,748        1,526          1                          3.46      Commit
direct path read                   342,745        834          2                          1.89      User I/OSo does it means that there is a issue with disk I/O on my box. since the wait class is showing as User I/O.
I am running the single instance database with oracle version 11.2 on IBM AIX server.Is this a standard one hour report on a machine with at least 8 CPUs available ?
If so then take a look at Dom Brooks comment - your average read times are in the range of 0.1 to 0.3 milliseconds - they're mostly coming out of filesystem cache (but maybe you have some very good database flashcache installed).
Your first move should probably be to take some of the memory from your file system cache and increase your buffer cache - this will probably decrease the number of reads reported and the amount of CPU used. I'd also look for statements that seem to be doing an unreasonable amount of I/O to get their end results, and check the "Segments by ... " section of the report to see which objects are seeing most I/O.
Before you mess about with ASM, you should simply check for easy ways to do less work.
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
Author: <b><em>Oracle Core</em></b>

Since I actualize my iphone 4 to ios6 I can´t download applications from app store in it they seem to by downloading but within some seconds it's like if not clicked the download button. But then I have "waiting" mode applications that I never search for.

Since I actualize my iphone 4 to ios6 I can´t download applications from app store in it they seem to by downloading but within some seconds it's like if not clicked the download button. But then I have "waiting" mode applications that I never search for.

Hi nitish7
Thank you for posting and welcome to Nokia Support Discussions!
Can you provide us the following information to better assist you:
1. Model of your phone.
2. Are you downloading from Nokia Store on the phone or using Nokia Suite?
3. Type of connection you're using (WiFi/mobile data)
4. Any error message you're getting?
If my post helped you, please don't forget to click on the "White Star" and if it resolved your issue click on "Accept as Solution"

Database Time Spent Waiting (%): Wait Class Other nearly 100% all the time

Don't understand why OEM is reporting that Database Time Spent Waiting (%): Wait Class Other is nearly 100% all the time. Database 10.1.0.4 just installed on Linux(RHEL4AS) and nobody use it for now except OEM and me for admin purpose.
Any clue for that problem ?
Regards
Nicolas

Seems like you are not the first to see this kind of behaviour.
I've found another similar thread on metalink. I can't say the answer is terribly helpful, but thought you might be interested anyway:
From: Jose Ramón Tourón 14-Sep-07 08:34
Subject: Database Time Spent Waiting (%) at 100 in event class Commit
RDBMS Version: Oracle 10g r2
Operating System and Version: Suse Enterprise Linux 10
Error Number (if applicable):
Product (i.e. SQL*Loader, Import, etc.): database core
Product Version: 10gR2
Database Time Spent Waiting (%) at 100 in event class Commit
Hi everyone, yesterday we create a new database instance with dbca, the creation process was ok, and the two instances are running ok, database stops and starts without any problem, and listeners are ok. In the enterprise manager of this new instance we found this message:
Database Time Spent Waiting (%) at 100 in event class Commit, this event happend every 1 or 2 minutes sometimes at 100, the next 40%, the next 98, ... and so on.
Do you know what's happend in this instance?
Thanks in advance to everyone
Santiago Pérez
From: Oracle, Helmut Pfau 14-Sep-07 12:52
Subject: Re : Database Time Spent Waiting (%) at 100 in event class Commit
From Oracle Database Reference Manual:
Commit
This wait class only comprises one wait event - wait for redo log write confirmation after a commit (that is, 'log file sync')
So you can't write fast enough into your log files.
Did you check the frequency of log switches?
From: Metalink TCS User Group TCS Uruguay 14-Sep-07 15:52
Subject: Re : Database Time Spent Waiting (%) at 100 in event class Commit
Hi José! Please don't get anxious because of this: Wait time must be SOMEWHERE, there's a saying "An OLTP DB is only as fast as its redo logs", but if you are not having any performance problem you don't need to do anything special.
You say you've just created the DB. Now make it DO something: put it to the test by simulating production conditions as closely as you can, and after some hours ask the users whether there is some problem. If there is, take a look at the wait statistics... you'll probably see many other top events before this one!
Bruno abate_at_adinet.com.uy

My iPad 4 tried to open application but repeatedly iCloud asked for login with apple id password. I put my apple id password correct,even i reset it again but still it does not accept in iPad .i am bored with this 3rd class application.please help

My iPad 4 tried to open application but repeatedly iCloud asked for login with apple id password. I put my apple id password correctly,even i reset it again but still it does not accepted in iPad .i am bored with this class application.please help.After every 1 second icloud logoin asked.

Find Apple ID
https://iforgot.apple.com/applied
iPad: Unable to update or restore
http://support.apple.com/kb/ht4097
iTunes: Specific update-and-restore error messages and advanced troubleshooting
http://support.apple.com/kb/TS3694
If you can’t update or restore your iOS device
http://support.apple.com/kb/ht1808
 Cheers, Tom

Other wait class

can anyone tell me what are the wait events in wait class 'OTHER';

Dear dbaforu,
Short but indeed useful information here;
http://download.oracle.com/docs/cd/E11882_01/server.112/e16638/instance_tune.htm#PFGRF94504
+"+
+10.3.7 events in wait class other+
+This event belong to Other wait class and typically should not occur on a system. This event is an aggregate of all other events in the Other wait class, such as latch free, and is used in the V$SESSION_EVENT and V$SERVICE_EVENT views only. In these views, the events in the Other wait class will not be maintained individually in every session. Instead, these events will be rolled up into this single event to reduce the memory used for maintaining statistics on events in the Other wait class.+
+"+
Regards.
Ogan

How do I Configure a computer to run myapp..class application

I want to know if there is any guidelines documentation or checklist regarding installing a java application into a computer that does not have the IDE installed (Customer computer)
I also would like to know if there is any documentation regarding how to compile to .exe
Thanks
JN

Generally you can just install the JRE on the computer and put your jar file into the jre/ext directory. You may also need other jar files if your ide uses non-standard classes when building things. This works for me on JDK 1.3+
Search these forums on compiling to exe or native code. This comes up a lot.

Compilation error: "The definition of base class Application was not found."

Hi,
I imported my Flash Builder 4.6 project to the 4.7 pre-release version. My application use a CustomSystemManager (in order to force the loading of a "TextContainerManager", I'm using latest TextLayoutFramework 3.0.0.29).
I had no error with previous versions (Flex SDK 4.5 and Flex SDK 4.6).
My application is main.mxml :
<myapp:MyApp>
</myapp:MyApp>
myapp/MyApp.as :
package myapp {
          import spark.components.Application;
          [Frame(factoryClass="skyrockchat.CustomSystemManager")]
          public class MyApp extends Application {
        public function MyApp() {
          super();
myapp/CustomSystemManager.as :
package myapp {
          import flashx.textLayout.container.TextContainerManager;
          import mx.managers.SystemManager;
          public class CustomSystemManager extends SystemManager
                    public function CustomSystemManager()
                              var c:Class = TextContainerManager; // force the inclusion of this class
                              super();
If I right click on the "Application" word and then "Open declaration", the correct class from spark.components is opened...
I don't know if this is a bug or a side effect... ^^

The packages of the CustomSystemManager don't seem to match:
[Frame(factoryClass="skyrockchat.CustomSystemManager")] has "skyrockchat" as the package and another place says to put CustomSystemManager in package "myapp".
myapp/CustomSystemManager.as :
package myapp {
When I changed "skyrockchat" to "myapp" the project compiled.
-Darrell

After upgrading firefox I am unable to add attachments through an online class application. The application cannot see the files in my computer.

I am attending an online class through WSU Online. The course has its own internal email and electronic forums. I have to send essays daily to my instructor, and occassionally record comments on an application they call Wimba voice board. The day I upgraded the Firefox version I lost the capability to search for my computer files when trying to add an attachment, I also lost the access to the voice board.

Hi Gabrielaa,
I work for WSU Online and believe I can help you with this issue. Would you go into your course space and select the Technical Support page. Email the support address listed with the salutation of Attn: wsu_mack.
I look forward to hearing from you.

Itune connect stuck on waiting for application upload

hello
after one waiting for my app review it was rejected because it had iTouch on its name
now i have changed the name, updated metadata, and created new binary
but i don´t have any way of uploading it now
the button to update binary that appeared after being rejected is now gone
i tried to use application loader and it reports upload success but on the app status keeps showing waiting for upload
i am getting crazy with this...
so much bureaucracy and lack of communication keeps me too away from developing that is what i was supposed to be doing

agreed. Apple's developer support for iPhone app writers have been a joke, My app has been going through the hoops in itunes connect, but i never know if there is something i should be doing to get it further. The least they could do is have a simple FAQ which explains what you need to do for each step and how long the overall process is expected to take.
[email protected] is worthless too and never replies. Cmon guys, i need something more than the automated response.

Wait class Application

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