Known performance issues

Please discuss known performance issues with enqueue or dequeue of queustion in Oracle 9i and 10G versions? any knowsn bug numbers, patch nubmers etc

Some suggestions to start with
XML DB FAQ

Similar Messages

Known performance issue bugs and patches for R12.1.3

Hi Team,
We have upgraded oracle application from 12.1.1 to 12.1.3.
I wanted to apply the known performance issue bugs and patches for R12.1.3.
Please let me know for any details.
Thanks,

Are u currently facing any performance issues on 1213?
Tuning All Layers Of E-Business Suite – Performance Topics
http://www.oracle.com/technetwork/apps-tech/collab2011-tuning-ebusiness-421966.pdf
• Start with Best Practices : (note: 1121043.1)
• SQL Tuning
– Trace files
– SQLT output (note: 215187.1)
– Trace Analyzer (note: 224270.1)
– AWR Report (note: 748642.1)
– AWR SQL Report (awrsqrpt.sql)
– 11g SQL Monitoring
– SQL Tuning Advisor
• PL/SQL Tuning
– Product logs
– PL/SQL Profiler (note: 808005.1)
• Reports Tracing
– note: 111311.1
• Database Tuning
– AWR Report (note: 748642.1)
– ADDM report (note: 250655.1)
– Automated Session History (ASH) Report
– LTOM output (note: 352363.1)
• Forms Tuning
• Forms Tracing (note: 373548.1)
• FRD Log (note: 445166.1)
– Generic note: 438652.1
• Middletier Tuning
– JVM Logs
– JVM Sizing (note: 362851.1)
– JDBC Tuning (note: 278868.1)
• OS
– OSWatcher (note: 301137.1)

Performance issues with version enable partitioned tables?

Hi all,
Are there any known performance issues with version enable partitioned tables?
Ive been doing some performance testes with a large version enable partitioned table and it seems that OCB optimiser is choosing very expensive plans during merge operations.
Tanks in advance,
Vitor
Example:
     Object Name     Rows     Bytes     Cost     Object Node     In/Out     PStart     PStop
UPDATE STATEMENT Optimizer Mode=CHOOSE          1          249
UPDATE     SIG.SIG_QUA_IMG_LT
NESTED LOOPS SEMI          1     266     249
PARTITION RANGE ALL                                   1     9
TABLE ACCESS FULL     SIG.SIG_QUA_IMG_LT     1     259     2               1     9
VIEW     SYS.VW_NSO_1     1     7     247
NESTED LOOPS          1     739     247
NESTED LOOPS          1     677     247
NESTED LOOPS          1     412     246
NESTED LOOPS          1     114     244
INDEX RANGE SCAN     WMSYS.MODIFIED_TABLES_PK     1     62     2
INDEX RANGE SCAN     SIG.QIM_PK     1     52     243
TABLE ACCESS BY GLOBAL INDEX ROWID     SIG.SIG_QUA_IMG_LT     1     298     2               ROWID     ROW L
INDEX RANGE SCAN     SIG.SIG_QUA_IMG_PKI$     1          1
INDEX RANGE SCAN     WMSYS.WM$NEXTVER_TABLE_NV_INDX     1     265     1
INDEX UNIQUE SCAN     WMSYS.MODIFIED_TABLES_PK     1     62
/* Formatted on 2004/04/19 18:57 (Formatter Plus v4.8.0) */
UPDATE /*+ USE_NL(Z1) ROWID(Z1) */sig.sig_qua_img_lt z1
SET z1.nextver =
SYS.ltutil.subsversion
(z1.nextver,
SYS.ltutil.getcontainedverinrange (z1.nextver,
'SIG.SIG_QUA_IMG',
'NpCyPCX3dkOAHSuBMjGioQ==',
4574,
4575
4574
WHERE z1.ROWID IN (
(SELECT /*+ ORDERED USE_NL(T1) USE_NL(T2) USE_NL(J2) USE_NL(J3)
INDEX(T1 QIM_PK) INDEX(T2 SIG_QUA_IMG_PKI$)
INDEX(J2 WM$NEXTVER_TABLE_NV_INDX) INDEX(J3 MODIFIED_TABLES_PK) */
t2.ROWID
FROM (SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j1,
sig.sig_qua_img_lt t1,
sig.sig_qua_img_lt t2,
wmsys.wm$nextver_table j2,
(SELECT /*+ INDEX(WM$MODIFIED_TABLES MODIFIED_TABLES_PK) */
UNIQUE VERSION
FROM wmsys.wm$modified_tables
WHERE table_name = 'SIG.SIG_QUA_IMG'
AND workspace = 'NpCyPCX3dkOAHSuBMjGioQ=='
AND VERSION > 4574
AND VERSION <= 4575) j3
WHERE t1.VERSION = j1.VERSION
AND t1.ima_id = t2.ima_id
AND t1.qim_inf_esq_x_tile = t2.qim_inf_esq_x_tile
AND t1.qim_inf_esq_y_tile = t2.qim_inf_esq_y_tile
AND t2.nextver != '-1'
AND t2.nextver = j2.next_vers
AND j2.VERSION = j3.VERSION))

Hello Vitor,
There are currently no known issues with version enabled tables that are partitioned. The merge operation may need to access all of the partitions of a table depending on the data that needs to be moved/copied from the child to the parent. This is the reason for the 'Partition Range All' step in the plan that you provided. The majority of the remaining steps are due to the hints that have been added, since this plan has provided the best performance for us in the past for this particular statement. If this is not the case for you, and you feel that another plan would yield better performance, then please let me know and I will take a look at it.
One suggestion would be to make sure that the table was been recently analyzed so that the optimizer has the most current data about the table.
Performance issues are very hard to fix without a reproducible test case, so it may be advisable to file a TAR if you continue to have significant performance issues with the mergeWorkspace operation.
Thank You,
Ben

How should I report forum performance issues?

The forums rely heavily on the caching features of browsers to improve the speed of page rendering. Performance of these forums should greatly improve after a few pages because more and more of the images, css and javascript is cached in the browser. As a consequence, when reporting forums performance issues the report should include some information on the state of the browser cache to determine whether the issue is a browser issue or a server issue. Such detailed information is generally not available from just watching the browser screen, but needs to come from specialized tools such as performance monitor plugins and recording proxies.
The preferred report method for performance issues is to use the speed reporting features build into or available as a plugin for a browser for both the page you want to report a problem with and several refence pages in the site. Detailed instructions are listed below separated out for different browsers. If possible, please use Firefox for submitting the report because it provides an export format that can be read back electronically.
Known performance issues
The performance issues with any screen with a Rich Text Editor, such as the Reply window and the compose Private Message window have been acknowleged and improvements are being implemented.
Mozilla Firefox (preferred)
Warning: it is currently not recommended to generate a speed report when logged in. The speed report has enough detail for somebody else to hijack your session and impersonate you on the forums. If you really must report while logged in, make sure you log out your browser after generating the speed report and wait at least 4 hours before posting.
Install the Firebug plugin
Install the NetExport 0.6 extension for Firebug
Enable all Firebug panels
Switch to the "Net" panel in Firebug
Click on this link
Export the data from the Firebug Net panel
Click on this link
Export the data from the Firebug Net panel
Browse to the page where you are experiencing the performance problem.
Export the data from the Firebug Net panel
Click on this link
Export the data from the Firebug Net panel
Click on this link
Export the data from the Firebug Net panel
Browse to the page where you are experiencing the performance problem.
Export the data from the Firebug Net panel
When you report a performance problem please attach the 6 exports from the Firebug Net panel and an explanation of how you are experiencing the issues (for instance how much slower it is then normal) and include a description of your internet connection (dial-up, dsl, cable etc.) and the country from where you are connecting. If you have non-standard tweaks to your Firefox configuration (such as pipelining enabled) or are running any plugins please include that information in your report as well.
Google Chrome
Open the Developer Tools (Ctrl-Shift-J)
Navigate to the resources tab
Enable resource tracking.
Click on this link
Export the resource loading data.
Reset the data by disabling and enabling resource tracking
Click on this link
Export the data
Reset the data by disabling and enabling resource tracking
Navigate to the page where you experience the performance problem
Export the data
Reset the data by disabling and enabling resource tracking
Click on this link
Export the data
Reset the data by disabling and enabling resource tracking
Click on this link
Export the data
Reset the data by disabling and enabling resource tracking
Navigate to the page where you experience the performance problem
Export the data
Since Google Chrome does not have an export format for the Resource Tracking information best current practice is to take a screenshot and note the hover details for any resource with a tail that is longer then 25% of the total load time. When you report a performance problem please attach the screenshots and an explanation of how you are experiencing the issues (for instance how much slower it is then normal) and include a description of your internet connection (dial-up, dsl, cable etc.) and the country from where you are connecting.
Apple Safari
The Apple Safari Web Inspector has a Resources panel similar to the Resources panel in the Google Chrome developer tools.To get there, follow these steps:
Show the menu bar.
Go to preferences
Go to the Advanced Tab
Check “Show Develop menu in menu bar”.
From the Develop menu select “Show Web Inspector”.
Collecting the performance information and exporting works exactly the same as in Google Chrome. Please refer to the instructions for Google Chrome.
Microsoft Internet Explorer
IE does not have native features to analyze web traffic. No plugins have been found that produce the required information (please let us know if we missed any). For now, please reproduce the issue with Firefox, Chrome or Safari.
Please note that due to the reliance on Javascript for the interactive effects the performance of these forums will be much better on MS IE 8 then on previous versions of MS IE.

Hi
It works, check once again...
regards
Swami

Performance issue in correlation with hidden objects in reports

Hello,
is there a known performance issue in correlation with hidden objects in reports using conditional suppressions? (HFM version 11.1.2.1)
Using comprehensive reports, we have huge performance differences between the same reports with and without hidden objects. Furthermore we suspect that some trouble with our reporting server environment base on using these reports through enduser.
Every advice would be welcome!
Regards,
bsc
Edited by: 972676 on Nov 22, 2012 11:27 AM

If you said that working with EVDRE for each separate sheet is fin ethat's means the main problem it is related to your VB custom macro interdependecy.
I suggest to add a log (to write into a text file)for you Macro and you will se that actually that minute is staying to perform operations from custom Macro.
Kind Regards
Sorin Radulescu

COPA - Potential performance issues

Hi all,
I am very new to the COPA, so please excuse me for any un clear explanation, and do not hesitate to ask to clarification.
My question is regarding the cost allocation (of overheads) process involving customized characteristics and would like to know if there is such known performance issues that are caused by:
- the use of custom characteristics in the definition of profitability segment? Of course, it must depends on the choice of characteristics, but then are they any guidelines of how to design this?
- the posting of line items on these segments?
- the reposting to FI?
I have searched for OSS notes, find some related to performance posting in COPA (for ex: 35288) but nothing directly related to the use of custom characteristics.
Thanks for your help.
Kind regards,
Yi

Hi Maria,
Yes, I have found this note already although did not check all the related notes yet. The one I have checked do not have a direct link with the customized characteristics tough, even if they seems good to improve global performance.
Regads,
Yi

HtmlKona performance issues?

The majority of our content is dynamic in nature and stored in an
underlying database. One of the decisions our group took was to use the
htmlKona API to create htmlPages rendered by our Servlets.
We are now finding that this may have been a bad choice since we seeing
that this may be causing us severe performance problems due to object
creation and what seems to be an excessive amount of String creation
within the Server. Are there any known performance issues regarding the
use of htmlKona?
Are there any performance techniques using htmlKona currently
recommended or being used to help aleviate object creation? (i.e.
Reusing an html object and sending its output to StringBuffer, instead
of using an HtmlContainer)
Thanks,
Don DeLuca

Hi,
you should analyze the db after you have loaded the tables.
Do you use sequences to generate PKs? Do you have a lot of indexex and/or triggers on the tables?
If yes:
make sure your sequence caches (alter sequence s cache 10000)
Drop all unneeded indexes while loading and disable trigger if possible.
How big is your Redo Log Buffer? When loading a large amount of data it may be an option to enlarge this buffer.
Do you have more then one DBWR Process? Writing parallel can speed up things when a checkpoint is needed.
Is it possible using a direct load? Or do you already direct load?
Dim

Weblogic J2EE agent 2.2 performance issue

Hi All,
Are these known performance issues with J2EE Agent 2.2 for Weblogic 8sp5?
Is there a document that tells about performance tuning of J2EE Agent 2.2 for Weblogic server?
We are doing the load testing with AM 7.0 and Weblogic J2EE Agent. We found that AM7.0 with Apache Policy agent works fine in our load test. Our Application's performance without the J2EE agent is good. The moment we add J2EE Agent for weblogic to the equation, it goes south...
Any help will be appreciated,
Thanks,
Vivek

Hi All,
Are these known performance issues with J2EE Agent 2.2 for Weblogic 8sp5?
Is there a document that tells about performance tuning of J2EE Agent 2.2 for Weblogic server?
We are doing the load testing with AM 7.0 and Weblogic J2EE Agent. We found that AM7.0 with Apache Policy agent works fine in our load test. Our Application's performance without the J2EE agent is good. The moment we add J2EE Agent for weblogic to the equation, it goes south...
Any help will be appreciated,
Thanks,
Vivek

Are there any known issues with Adobe Edge Animate and Yosemite? Experiencing performance issues since upgrading OS

Are there any known issues with Adobe Edge Animate and Yosemite? Experiencing performance issues since upgrading OS. Animation I was working on that had been performing in browser fine suddenly stopped working, and was not related to any action I had done at that point. Also was working in it today and program stopped responding to key board short cut commands.

I am having a whole slew of odd interface problems with a fresh 2014.1.1 on a fresh macbook pro with latest Yosemite. Program locks up, cursor selections don't show, things disappear. I have a mac mini also and the program runs fine on it. Is there possibly something related to the solid state hard drive in new macs?

Performance issues with class loader on Windows server

We are observing some performance issues in our application. We are Using weblogic 11g with Java6 on a windows 2003 server
The thread dumps indicate many threads are waiting in queue for the native file methods:
"[ACTIVE] ExecuteThread: '106' for queue: 'weblogic.kernel.Default (self-tuning)'" RUNNABLE
     java.io.WinNTFileSystem.getBooleanAttributes(Native Method)
     java.io.File.exists(Unknown Source)
     weblogic.utils.classloaders.ClasspathClassFinder.getFileSource(ClasspathClassFinder.java:398)
     weblogic.utils.classloaders.ClasspathClassFinder.getSourcesInternal(ClasspathClassFinder.java:347)
     weblogic.utils.classloaders.ClasspathClassFinder.getSource(ClasspathClassFinder.java:316)
     weblogic.application.io.ManifestFinder.getSource(ManifestFinder.java:75)
     weblogic.utils.classloaders.MultiClassFinder.getSource(MultiClassFinder.java:67)
     weblogic.application.utils.CompositeWebAppFinder.getSource(CompositeWebAppFinder.java:71)
     weblogic.utils.classloaders.MultiClassFinder.getSource(MultiClassFinder.java:67)
     weblogic.utils.classloaders.MultiClassFinder.getSource(MultiClassFinder.java:67)
     weblogic.utils.classloaders.CodeGenClassFinder.getSource(CodeGenClassFinder.java:33)
     weblogic.utils.classloaders.GenericClassLoader.findResource(GenericClassLoader.java:210)
     weblogic.utils.classloaders.GenericClassLoader.getResourceInternal(GenericClassLoader.java:160)
     weblogic.utils.classloaders.GenericClassLoader.getResource(GenericClassLoader.java:182)
     java.lang.ClassLoader.getResourceAsStream(Unknown Source)
     javax.xml.parsers.SecuritySupport$4.run(Unknown Source)
     java.security.AccessController.doPrivileged(Native Method)
     javax.xml.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
     javax.xml.parsers.FactoryFinder.findJarServiceProvider(Unknown Source)
     javax.xml.parsers.FactoryFinder.find(Unknown Source)
     javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
     org.ajax4jsf.context.ResponseWriterContentHandler.<init>(ResponseWriterContentHandler.java:48)
     org.ajax4jsf.context.ViewResources$HeadResponseWriter.<init>(ViewResources.java:259)
     org.ajax4jsf.context.ViewResources.processHeadResources(ViewResources.java:445)
     org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:193)
     org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
     org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
On googling this seems to be an issue with java file handling on windows servers and I couldn't find a solution yet. Any recommendation or pointer is appreciated

Hi shubhu,
I just analyzed your partial Thread Dump data, the problem is that the ajax4jsf framework ResponseWriterContentHandler triggers internally a new instance of the DocumentBuilderFactory; every time; triggering heavy IO contention because of Class loader / JAR file search operations.
Too many of these IO operations under heavy load will create excessive contention and severe performance degradation; regardless of the OS you are running your JVM on.
Please review the link below and see if this is related to your problem.. This is a known issue in JBOSS JIRA when using RichFaces / ajaxJSF.
https://issues.jboss.org/browse/JBPAPP-6166
Regards,
P-H
http://javaeesupportpatterns.blogspot.com/

Performance issues with dynamic action (PL/SQL)

Hi!
I'm having perfomance issues with a dynamic action that is triggered on a button click.
I have 5 drop down lists to select columns which the users want to filter, 5 drop down lists to select an operation and 5 boxes to input values.
After that, there is a filter button that just submits the page based on the selected filters.
This part works fine, the data is filtered almost instantaneously.
After this, I have 3 column selectors and 3 boxes where users put values they wish to update the filtered rows to,
There is an update button that calls the dynamic action (procedure that is written below).
It should be straight out, the only performance issue could be the decode section, because I need to cover cases when user wants to set a value to null (@) and when he doesn't want update 3 columns, but less (he leaves '').
Hence P99_X_UC1 || ' = decode(' || P99_X_UV1 ||','''','|| P99_X_UC1 ||',''@'',null,'|| P99_X_UV1 ||')
However when I finally click the update button, my browser freezes and nothing happens on the table.
Can anyone help me solve this and improve the speed of the update?
Regards,
Ivan
P.S. The code for the procedure is below:
create or replace
PROCEDURE DWP.PROC_UPD
(P99_X_UC1 in VARCHAR2,
P99_X_UV1 in VARCHAR2,
P99_X_UC2 in VARCHAR2,
P99_X_UV2 in VARCHAR2,
P99_X_UC3 in VARCHAR2,
P99_X_UV3 in VARCHAR2,
P99_X_COL in VARCHAR2,
P99_X_O in VARCHAR2,
P99_X_V in VARCHAR2,
P99_X_COL2 in VARCHAR2,
P99_X_O2 in VARCHAR2,
P99_X_V2 in VARCHAR2,
P99_X_COL3 in VARCHAR2,
P99_X_O3 in VARCHAR2,
P99_X_V3 in VARCHAR2,
P99_X_COL4 in VARCHAR2,
P99_X_O4 in VARCHAR2,
P99_X_V4 in VARCHAR2,
P99_X_COL5 in VARCHAR2,
P99_X_O5 in VARCHAR2,
P99_X_V5 in VARCHAR2,
P99_X_CD in VARCHAR2,
P99_X_VD in VARCHAR2
) IS
l_sql_stmt varchar2(32600);
p_table_name varchar2(30) := 'DWP.IZV_SLOG_DET';
BEGIN
l_sql_stmt := 'update ' || p_table_name || ' set '
|| P99_X_UC1 || ' = decode(' || P99_X_UV1 ||','''','|| P99_X_UC1 ||',''@'',null,'|| P99_X_UV1 ||'),'
|| P99_X_UC2 || ' = decode(' || P99_X_UV2 ||','''','|| P99_X_UC2 ||',''@'',null,'|| P99_X_UV2 ||'),'
|| P99_X_UC3 || ' = decode(' || P99_X_UV3 ||','''','|| P99_X_UC3 ||',''@'',null,'|| P99_X_UV3 ||') where '||
P99_X_COL ||' '|| P99_X_O ||' ' || P99_X_V || ' and ' ||
P99_X_COL2 ||' '|| P99_X_O2 ||' ' || P99_X_V2 || ' and ' ||
P99_X_COL3 ||' '|| P99_X_O3 ||' ' || P99_X_V3 || ' and ' ||
P99_X_COL4 ||' '|| P99_X_O4 ||' ' || P99_X_V4 || ' and ' ||
P99_X_COL5 ||' '|| P99_X_O5 ||' ' || P99_X_V5 || ' and ' ||
P99_X_CD || ' = ' || P99_X_VD ;
--dbms_output.put_line(l_sql_stmt);
EXECUTE IMMEDIATE l_sql_stmt;
END;

Hi Ivan,
I do not think that the decode is performance relevant. Maybe the update hangs because some other transaction has uncommitted changes to one of the affected rows or the where clause is not selective enough and needs to update a huge amount of records.
Besides that - and I might be wrong, because I only know some part of your app - the code here looks like you have a huge sql injection vulnerability here. Maybe you should consider re-writing your logic in static sql. If that is not possible, you should make sure that the user input only contains allowed values, e.g. by white-listing P99_X_On (i.e. make sure they only contain known values like '=', '<', ...), and by using dbms_assert.enquote_name/enquote_literal on the other P99_X_nnn parameters.
Regards,
Christian

Sale Order Performance Issue.

Hi,
We are using EBS 12.0.6 and Database is 10g (10.2.3).
We are facing performance issue with "Order management Sale Order Form",
When user click on "Line Items" Tab of "Sale Order Form" and
In "Main" Tab entring the "Ordered Item" then press tab and entring the "Qty" of item, its takes time 20 to 30 Second for one item if its related Items exists.
We have 150 entiries against one sale order. Users are facing 20-30 second delay on each entry.
Please advise how to improve the performance when related Itms exists?
Thanks,
Edited by: user12007410 on Feb 4, 2010 12:00 AM

Pl create a trace file as outlined in MOS Doc 564817.1 (How To Create Forms And Database Level Trace For Receiving Transactions) to help pinpoint what SQL is causing the issue. Then open an SR as this may be a known issue for which a patch exists.
Pl also verify that database statistics are current - see MOS Doc 169935.1 (Troubleshooting Oracle Applications Performance Issues) - section on "Statistics Gathering"
HTH
Srini

Expression Filter Performance Issues / Misuse?

I'm currently evaluating the Expression Filter functionality for a new requirement. The basic idea of the requirement is that I have a logging table that I want to get "interesting" records from. The way I want to set it up is to exclude known, "uninteresting", records or record patterns.
So as far as an implementation I was considering a table of expressions that contained expression filter entries for the "uninteresting" records and checking this against my logging table using the EVALUATE operator and looking for a 0 result.
In my testing I wanted to return results where the EVALUTE operator is equal to 1 to see if my expressions are correct. In doing this I was experiencing significant performance issues. For example my test filter matches 72 rows out of 61657 possible entries. It took Oracle almost 10 minutes to evaluate this expression. I tried it with and without an Expression Filter index with no noticeable change in execution time. The test case and query is provided below.
Is this the right use case for Expression Filter? Am I misunderstanding how it works? What am I doing wrong?
Test Case:
Version
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
Objects & Query:
CREATE TABLE expressions( white_list VARCHAR2(200));
CREATE TABLE data
AS
SELECT OBJECT_ID
     , OWNER
     , OBJECT_NAME
     , CREATED
     , LAST_DDL_TIME
FROM   DBA_OBJECTS
BEGIN
-- Create the empty Attribute Set --
DBMS_EXPFIL.CREATE_ATTRIBUTE_SET('exptype');
-- Define elementary attributes of EXF$TABLE_ALIAS type --
DBMS_EXPFIL.ADD_ELEMENTARY_ATTRIBUTE('exptype','data',
                                        EXF$TABLE_ALIAS('test_user.data'));
END;
BEGIN
DBMS_EXPFIL.ASSIGN_ATTRIBUTE_SET('exptype','expressions','white_list');
END;
INSERT INTO expressions(white_list) VALUES('data.owner=''TEST_USER'' AND data.created BETWEEN TO_DATE(''08/03/2010'',''MM/DD/YYYY'') AND TO_DATE(''08/05/2010'',''MM/DD/YYYY'')');
exec dbms_stats.gather_table_stats(USER,'EXPRESSIONS');
exec dbms_stats.gather_table_stats(USER,'DATA');
CREATE INDEX expIndex ON Expressions (white_list) INDEXTYPE IS EXFSYS.EXPFILTER
PARAMETERS ('STOREATTRS (data.owner,data.object_name,data.created)
               INDEXATTRS (data.owner,data.object_name,data.created)');
SELECT /*+ gather_plan_statistics */ data.* FROM data, expressions WHERE EVALUATE(white_list,exptype.getVarchar(data.rowid)) = 1;
DROP TABLE expressions PURGE;
BEGIN
        DBMS_EXPFIL.DROP_ATTRIBUTE_SET(attr_set => 'exptype');
END;
DROP TABLE data PURGE;

Hi,
If you are already using the queries and are stable enough then rather than modifying query you can try other options to improve the query performance like data compression of the cube, creation of aggregates, placing cube on BIA or creating cache for the query.
Best Regards,
Prashant Vankudre.

Experiencing strange performance issues after a hard drive failure - Help!

I bought my mid-2012 i5 Macbook Pro in December of 2012. I realized when shopping for computers that I wanted an SSD installed, but that it would be a lot cheaper if I bought the SSD and installed it rather than customizing it in the Apple Store. So I bought a nice Samsung 128GB SSD (820 or 840 - can't remember which) and did the installation. I went ahead and installed two 4GB sticks of RAM while I was at it. Everything was just dandy: my boot time was just under 9 seconds, and all of my data-heavy apps booted in no-time at all. Then all **** broke loose.
About two weeks ago, I opened my computer and I got the dreaded "? File Folder" notification with a gray screen. I immediately thought hard drive failure. No matter how many times I tried to boot, the computer just would not talk to the SSD anymore. I used Internet Recovery to get into my Disk Utility, and the entire partition was gone. I assumed the worst but wanted to be sure - I bought a hard drive enclosure and hooked the SSD up to an older Macbook, and lo and behold: it worked perfectly. I was not only able to recover data, but I could write data to the drive. Nothing appeared wrong with the drive when I plugged it into the old Macbook, but my newer Macbook still would not recognize it. Even my fiance's Windows 7 PC recognized the drive as "?" (since it was formatted for Mac, but hey - it recognized that it existed!).
I decided to re-install the original HDD that came with the 2012 Macbook Pro (the one I removed in favor of the SSD). I was able to re-install the OS and I can boot up at will, but everything is different. The performance issues are extremely noticeable. I can't have more than two programs running at one time without the spinning wheel of death appearing. My boot time went from 9 seconds to 2 minutes. I know that SSDs increase performance, so there is some slight performance downgrade to be expected since I am using a mechanical drive now -- but these are not normal issues. Sometimes I can't even type a web address into Safari without the wheel appearing. iTunes, and specifically the App Store, take minutes to open - and I have no media is on iTunes.
Here's the thing: I have tried just about anything to fix this problem that Google can pull up. I've verified the HDD, I've booted into Safe Mode, reset RAM and cache, run benchmarks and other performance tests, entered all sorts of weird language into Command Prompt, and studied Activity Monitor - I can't find a single red flag that would indicate anything being wrong. It appears to be a perfectly functioning, updated computer.
I'm thinking a piece of hardware failed that triggered the error with the SSD. I'm not really sure though since all of my performance tests indicate perfectly functioning hardware. I'm a little afraid to take it to the Apple store because I know they'll tell me it's my fault for opening the computer and replacing the hard drive in the first place.
Any ideas? At this point anything to salvage this computer would be helpful.

Spin Cycle,
were those other computers which were able to recognize your SSD in its external enclosure also Macs? Do you know if your SSD has its most recent firmware revision installed? (If it doesn’t, its installer can be downloaded from the Samsung SSD firmware page for burning onto a bootable DVD.) I haven’t used the 830 myself, so I don’t know what its reputation is with Macs. I have an 840 PRO in my MacBook Pro, which has been trouble-free for me, but my understanding is that the 840 EVO has had trouble with Macs in its earlier firmware revisions — so I’m wondering if the 830 has a known track record with Macs, good or bad.

Performance issues using JavaFX on different notebooks

Hello,
unfortunately i feel forced to ask a question about performance issues. As far as i understood, most of the problems with JavaFX 2.0 that are discussed here or somewhere else seem to have there roots in a huge count of nodes and/or some kind of animations. In opposition to this I'm writing a business application for the desktop with JavaFX as a Swing-replacement. There are no permanent animations at all and the scene has all in all 200 nodes(measured it with ScenicView) yet. I use no WebView-Nodes.
The application runs very well on my development computer with 16 GB of RAM, a Intel Corei7 2600K processor and a mid-class AMD grafics device. Also, there are no performance issues on a Core i3 Notebook. As soon as i start the application on my Thinkpad X220 with Core i7-2620M CPU, 8 GB RAM and Intel HD graphics it get's almost unusable. For example, there is a diagramm(see attached screenshot), which is situated in a scrollpane. As soon as i try to pan it, the panning extremely slow(i'd say 2-4 fps). Another example is that hovering buttons is not very responsive. Moving the mouse over a button causes the hover effect 0.3-0.5 seconds after it entered the button. Fading transitions that i use at some places are not smooth as well.
I made sure that the app is running using a hardware renderer on each computer. Also, i tried to force a fallback to the software renderer using the "-Dprism.order=j2d" switch but it only performed worse.
So my first question is: Are there known issues with mobile processors/graphic devices of the mentioned type?

I just tested it with Java 8 ea build 61 and beside the fact that a small amount of css didn't work anymore, it runs very well with this version of Java(/FX). Damn...i hope that some of this performance fixes will be backported to some Java 7 update.

Known performance issues

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