Execute to parse ratio is 49 any problem

Hi ,
execute to parse ratio is 49 any problem ?

I assume you're looking at a Statspack or AWR report?
First, it's important to understand what the Parse to Execute ratio is.
It's calculated as:
round(100*(1-:prse/:exe),2)So, the idea is, for a given SQL statement, in the ideal world, you parse it once, and execute it many times. If you do that, your Parse to Execute ratio will tend towards 100%. 100% is a "perfect score".
As you parse more and more, relative to executions, the ratio will fall. If you parse once per execution, your Parse to Execute ratio will go to 0%. That's not good, but, it could actually be even worse than that. Some brain dead applications actually do more parses than executions. If that happens, your Parse to Execute ratio will go negative.
So, is 49 "bad"? What is bad? Well, that depends. While it's true that any Parse to Execute ratio that's less than the high 90s could potentially be improved, the question really is how much will that benefit your system?
So, you need to ask yourself some questions. First, do you even have a performance probem? If not, then any effort spent tuning the system is almost certainly a waste of time. If you do have a performance problem, you should be profiling the critical business processes, to analyze and understand where they are spending their time. If one or more, poor performing, critical business processes is spending excessive time on parsing, then it may be worth looking at what's going on.
In general, ratios such as Parse to Execute, buffer cache hit, etc, are almost never useful in isolation. However, if all you have is an AWR or Statspack report, and you're trying to understand if the Parse to Execute ratio needs attention, then you should look at a few other numbers in the report. Look at the Top 5 Timed events; do any of them have anything to do with parsing? If not, then parsing is probably not an issue. Look at % Non-Parse CPU; if it's very high, say in the 90s, then almost certainly parsing is not a significant issue, so who cares about the Parse to Execute ratio?
Finally, if you do think that, in your case, Parse to Execute ratio is a problem, it's important to know that the only way to improve it is by reducing the number of parses or increase the numbers of executions. And, the only way to change number of parses or number of executions, is by changing the client program. There is no instance level adjustment or parameter that will have any effect on that statistic.
Hope that helps you understand how to interpret that statistic,
-Mark

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Execute to Parse %

Hi All,
while i am checking AWR Report i am getting Execute to Parse %: -0.79
When i check cursor_sharing parameter it is set to EXACT
In my view shall i switch it to force or not

Vikas Kohli wrote:
Load Profile
     Per Second     Per Transaction
Redo size:     175,185.67     252,714.86
Logical reads:     11,961.83     17,255.59
Block changes:     183.62     264.89
Physical reads:     333.09     480.50
Physical writes:     18.18     26.22
User calls:     4.53     6.54
Parses:     21.03     30.34
Hard parses:     0.01     0.01
Sorts:     0.66     0.95
Logons:     0.07     0.11
Executes:     20.87     30.10
Transactions:     0.69
% Blocks changed per Read:     1.54     Recursive Call %:     92.84
Rollback per transaction %:     2.30     Rows per Sort:     ########I beleive you have shared it for 1hr time. Looking at this Hard parsing is not an issue. So more then half of your problem is solved here. Next you can check how about the soft parsing.
Have you looked at thead : execute to parse ratio is 49 any problem ?
Also please check whats the ration for % Non-Parse CPU ? If its high, near to 90 then parsing is not a problem for you. HOPE This Help

Statspack report, execute to parse %

Hi guys,
I am finding the Execute to Parse ratio very low in a database. What is the desired percentage for this. And its significance.
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 99.99
Buffer Hit %: 99.92 In-memory Sort %: 99.95
Library Hit %: 97.68 Soft Parse %: 95.13
Execute to Parse %: 9.38 Latch Hit %: 99.99
Parse CPU to Parse Elapsd %: 95.38 % Non-Parse CPU: 96.90
Thanks
KHAL

What is the desired percentage for this ?Depends a lot on your database usage. For an OLTP database, this should be generally speaking much higher. For a datawarehouse, it is less important.
But what really matters is the general database performance evaluated by its users: it is OK or slow or very slow ?
See http://asktom.oracle.com/pls/ask/f?p=4950:8:2765691383260886028::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:4032595293314 to see what you can get and what you cannot get with these numbers.

Execute to Parse % is very low!!..need assistance

HI,
While looking in the statspack report, I found that under Instance efficiency area
the percentage for 'Execute to parse' is 10.35% and rest of the percentage are as following:
Buffer Nowait %: 99.89 Redo NoWait %: 100.00
Buffer Hit %: 92.57 In-memory Sort %: 99.98
Library Hit %: 99.86 Soft Parse %: 99.74
Execute to Parse %: 10.35 Latch Hit %: 99.88
Parse CPU to Parse Elapsd %: 81.74 % Non-Parse CPU: 96.19
12040171 parses (31500 hard parses), 13430267 executions
As per me, it is due to the high number of parsing compares to execution. Could anyone tell me that having a percentage for 'Exection to Parse" as above is considered ok? Is there any standard percentage for this parameter that a database should achieve?
Thanks
Ratheesh

I am not sure lack of binding is the problem here
Library Hit %: 99.86 Soft Parse %: 99.74
Execute to Parse %: 10.35 Latch Hit %: 99.88
12040171 parses (31500 hard parses), 13430267 executionsLibrary hit is 99.86 which shows the SQL is being shared and reused, hard parses that you would get if binds are not being used is low, soft parse however is high.
Could be just ref cursor usage
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:904605517791
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:865497961356
Or an application is forcing a parse
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:4032595293314
Whatever the reason, it means you should leave cursor_sharing set to exact, as it will not positively affect the parse ratio, but can still have all the drawbacks already mentioned.

Low Execute to Parse % and high soft parse %

Hello Folks
I am working on oracle 10g release2 on HP-UX
After going through awr reports observed it have low Execute to Parse % but high soft parse % (Instance Efficiency Percentages)
so cannot say issue with less use of bind variables,then what is cause of Execute to Parse %
searched sites like ask.tom,burselon counsulting etc as usual they had given generic/diplomatic(escaping) replies on this
like due to problem in application code,ineffecient sharing ,due to problem in database parameters etc
without any clear indication for cause and solution like if some database parameters not set properly then should say which database parameters can be checked,cause due to more parsing and less execution
please share if you had faced such issue and any suggestions to solve this
examples why this could happen ,like possibilities in application code
Thanks

Load Profile
                                          Per Second       Per Transaction
               Redo size:             11,685.79              3,660.98
               Logical reads:             71,445.74             22,382.86
               Block changes:                 70.89                 22.21
               Physical reads:                 58.63                 18.37
               Physical writes:                  2.80                  0.88
               User calls:                652.93                204.55
               Parses:                 48.39                 15.16
               Hard parses:                  0.33                  0.10
               Sorts:                  6.90                  2.16
               Logons:                  0.23                  0.07
               Executes:                 52.71                 16.51
               Transactions:                  3.19
            % Blocks changed per Read:    0.10    Recursive Call %:    30.48
            Rollback per transaction %:    2.57       Rows per Sort:    29.66
    Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
             Buffer Nowait %: 100.00       Redo NoWait %: 100.00
             Buffer Hit   %:   99.92    In-memory Sort %: 100.00
             Library Hit   %:   98.47        Soft Parse %:   99.32
             Execute to Parse %:    8.19         Latch Hit %:   99.63
             Parse CPU to Parse Elapsd %:   89.90     % Non-Parse CPU:   99.62There rdbms performs approximately 48 soft parse per second ,Soft Parse % and Library Hit very close to 99 it means there main part of sql are shared.Also here user calls similar high per second but executions less,however you should be try minimizing soft parsing.I do not know exactly for which interval you get this report but Execute to Parse % indicate that when executing query oracle can not find early cursor handles(open or closed) but it can find sql text and plan information from shared pool according hash values,in this case oracle perform soft parse again.In your case you also investigate shared pool size/fragmentation.To avoid little Execute to Parse % you can increase SESSION_CACHED_CURSORS or implement CURSOR_SPACE_FOR_TIME.So refer documentation and find how to use these parameters.

Execute to Parse % in AWR

dear all
I'm getting Execute to Parse % : -18.02 in my AWR report (with minus)
Is it a bad thing and why it is below 0 ?
thanks
john

user8779435 wrote:
dear all
I'm getting Execute to Parse % : -18.02 in my AWR report (with minus)
Is it a bad thing and why it is below 0 ?
As a general rule, ratios are a waste of space - they can't give you any quantitative information unless you are prepared to examine the underlying statistics.
The best you can say is that a negative ratio (in an AWR) report is unexpected - you could argue that a negative ratio is either "bad" or the result of a reporting bug, but "bad" and "worth worrying about" aren't necessarily the same thing.
This value is simply pointing out that the number of parse calls that are being counted is roughly 18% than the number of execute calls, and normally you might expect to do at least one execution of every statement you parse.
Check the "Instance Activity" for 'parse count' and 'execute count' to get a better idea of how much activity you are looking at.
Check "SQL ordered by parse count" to see if you can find statements which (for example) are parse twice for each execute, and if these statements come close to accounting for the difference you see in the numbers in the "instance activity". (There used to be some front-end environment that managed to send two parse calls per execute - but I can't remember the details off-hand, though I recall it was a simple configuration change to fix it.)
There are other parts of the report that will tell you whether the extrac parse calls are worth pursuing at present: e.g. the "time model" statistics allow you to compare time spent in parsing with total DB time; the "instance activity" statistics show you the CPU time spent parsing - one of the numbers used to generate the ratio "% Non-Parse CPU:"
Regards
Jonathan Lewis

How can I solve a Parse Error: "There was a problem parsing this package"

Hello;
I developed a really simple app in Flash Pro CC for android. I published it using AIR 13.0 for Android. When I tried to install it I received the Parse Error: "There was a problem parsing this package"
Im not sure if the problem has something to do with my app xml file, but here it is:
<?xml version="1.0" encoding="UTF-8"?>
<application xmlns="http://ns.adobe.com/air/application/13.0">
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     <versionNumber>1.0.0</versionNumber>
     <versionLabel>TouchEvent</versionLabel>
     <filename>TO eat or NOT TO eat</filename>
     <description/>
     <name>TO eat or NOT TO eat</name>
     <copyright/>
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          <systemChrome>standard</systemChrome>
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          <visible>true</visible>
          <fullScreen>true</fullScreen>
          <aspectRatio>landscape</aspectRatio>
          <renderMode>gpu</renderMode>
          <autoOrients>false</autoOrients>
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     <icon>
          <image36x36>icons/icon36x36.png</image36x36>
          <image48x48>icons/icon48x48.png</image48x48>
          <image72x72>icons/icon72x72.png</image72x72>
          <image96x96>icons/icon96x96.png</image96x96>
     </icon>
     <customUpdateUI>false</customUpdateUI>
     <allowBrowserInvocation>false</allowBrowserInvocation>
    <android>
          <manifestAdditions>
               <![CDATA[<manifest> </manifest>]]>
          </manifestAdditions>
     </android>
     <supportedLanguages>en</supportedLanguages>
</application>
What do you think is the best to check?

i don't see any problem with your manifest.
try saving your fla and the published files to a new directory and see if the error resolves.

Any Problem with my classpath?

SET JAVA_HOME=C:\JDK1.4
SET PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;C:\JDK1.4\BIN
I have set the classpath in my windows ME os
however I can successfully compile the java program but I can't run it, it gives the following error when using the command line java classname
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Killerfinch wrote:
My new yahoo account nestles comfortably in iCloud on the mine iPad.
No, your Yahoo account is not in iCloud (which only handles iCloud mail), it is in Yahoo, and the Yahoo mail account is on your iPad.
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~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
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http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Hello everyone: I am going to buy a new ipad in Australia and after that I am going back to China. I am just wondering if I can use it in China without any problem? Do I have to unlock or something like that?

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The iPad is not locked. Read the specifications.
http://www.apple.com/ipad/specs/

Execute to parse ratio is 49 any problem

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