Oracle VM host FC HBA Issues
Does anyone have any tips on how to present a FC SAN device on the host vm server to the guest vm servers?
This issue related to hardware of Oracle VM Servers installed on, please check hardware requirement in OVM 3.2.3 document again.
Best wishes,
Heng
Edited by: Vandy_Kh on Jun 3, 2013 7:46 PM
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Oracle Apps Database severe Performance Issue
Hi Gurus,
This is regarding a severe performance issue running in our Production E-Business Suite Instance.
its an R12.1.3 setup installed with 11.2.0.1 Database. All the servers are Solaris Sparc 64 (Solaris 10)
Let me brief you about the instance first:
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We have been facing some serious performance issues and we raised an SR with Oracle Support.
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in the AWR Report, following foreground reports were listed:
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61.46
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Oracle DB Hosting - An Option?
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I'm looking to add Oracle Database hosting as a option for our hosting organization. Not dedicated
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CRMSKR.htm_
======================================================
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<!-- -->
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serverArgs="escapeParams=true module=/rcrmap1/rcrrgbg2/crms/10as/fmx_dir/CRMS_LOGIN.fmx userid= debug=no host= port= obr=no record= tracegroup= log= term= ssoProxyConnect=no"
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======================================================
forms.conf
====================================================
# Name
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====================================================
Thanks,
HarishHi Michael,
Thanks for your valuable inputs.
Below line in CRMS_KR.htm was causing the problem because while directly hitting the CRMS_KR.htm we had hard-coded all the tag values which in other case is read from formweb.cfg
Before:
*<PARAM NAME="serverURL" VALUE="/forms/lservlet?ifcfs=/forms/frmservlet?acceptLanguage=en-us">*
We modified it to
After:
*<PARAM NAME="serverURL" VALUE="/forms/lservlet">*
Now we are able to hit the below URL sucessfully
http://scrmskr.apac.nsroot.net:7801/forms/html/CRMS_KR.htm
Thanks & Regards,
Harish -
I have installed Weblogic 7.0 on Windows 2000
server name = mb_sarah1
server ip = 192.168.27.35
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When I use the url http://192.168.27.35:7001/sarah, all is good
When I use the url http://mb_sarah1:7001/sarah, the Object that I get
is null
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in the Adress Field of my Web Browser
Thanks.DNS lookup is configured as outlined in the previous reply. But, looking at your /etc/hosts file:
10.103.10.125 ; oen11g.grid.com oen11g I would remove the semicolon.
Btw, the hosts file is also somewhat different in Linux since it puts the name of the server at the same line of localhost.
The Oracle installer expects it there.. e.g.: 127.0.0.1 gird.example.com grid localhost.localdomain localhost
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I am running some final test now and if I discover something different, I will update the post.
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Please go thru below important checklist/guidelines to identify issue in any Perforamnce issue and resolution in no time.
Checklist for Quick Performance problem Resolution
· get trace, code and other information for given PE case
- Latest Code from Production env
- Trace (sql queries, statistics, row source operations with row count, explain plan, all wait events)
- Program parameters & their frequently used values
- Run Frequency of the program
- existing Run-time/response time in Production
- Business Purpose
· Identify most time consuming SQL taking more than 60 % of program time using Trace & Code analysis
· Check all mandatory parameters/bind variables are directly mapped to index columns of large transaction tables without any functions
· Identify most time consuming operation(s) using Row Source Operation section
· Study program parameter input directly mapped to SQL
· Identify all Input bind parameters being used to SQL
· Is SQL query returning large records for given inputs
· what are the large tables and their respective columns being used to mapped with input parameters
· which operation is scanning highest number of records in Row Source operation/Explain Plan
· Is Oracle Cost Based Optimizer using right Driving table for given SQL ?
· Check the time consuming index on large table and measure Index Selectivity
· Study Where clause for input parameters mapped to tables and their columns to find the correct/optimal usage of index
· Is correct index being used for all large tables?
· Is there any Full Table Scan on Large tables ?
· Is there any unwanted Table being used in SQL ?
· Evaluate Join condition on Large tables and their columns
· Is FTS on large table b'cos of usage of non index columns
· Is there any implicit or explicit conversion causing index not getting used ?
· Statistics of all large tables are upto date ?
Quick Resolution tips
1) Use Bulk Processing feature BULK COLLECT with LIMIT and FOR ALL for DML instead of row by row processing
2) Use Data Caching Technique/Options to cache static data
3) Use Pipe Line Table Functions whenever possible
4) Use Global Temporary Table, Materialized view to process complex records
5) Try avoiding multiple network trips for every row between two database using dblink, Use Global temporary table or set operator to reduce network trip
6) Use EXTERNAL Table to build interface rather then creating custom table and program to Load and validate the data
7) Understand Oracle's Cost based Optimizer and Tune most expensive SQL queries with help of Explain plan
8) Follow Oracle PL/SQL Best Practices
9) Review tables and their indexes being used in the SQL queries and avoid unnecessary Table scanning
10) Avoid costly Full Table Scan on Big Transaction tables with Huge data volume,
11) Use appropriate filtration condition on index columns of seeded Oracle tables directly mapped to program parameters
12) Review Join condition on existing query explain plan
13) Use Oracle hint to guide Oracle Cost based optimizer to choose best plan for your custom queries
14) Avoid applying SQL functions on index columns
15) Use appropriate hint to guide Oracle CBO to choose best plan to reduce response time
Thanks
PrafulI understand you were trying to post something helpful to people, but sorry, this list is appalling.
1) Use Bulk Processing feature BULK COLLECT with LIMIT and FOR ALL for DML instead of row by row processing
No, use pure SQL.
2) Use Data Caching Technique/Options to cache static data
No, use pure SQL, and the database and operating system will handle caching.
3) Use Pipe Line Table Functions whenever possible
No, use pure SQL
4) Use Global Temporary Table, Materialized view to process complex records
No, use pure SQL
5) Try avoiding multiple network trips for every row between two database using dblink, Use Global temporary table or set operator to reduce network trip
No, use pure SQL
6) Use EXTERNAL Table to build interface rather then creating custom table and program to Load and validate the data
Makes no sense.
7) Understand Oracle's Cost based Optimizer and Tune most expensive SQL queries with help of Explain plan
What about using the execution trace?
8) Follow Oracle PL/SQL Best Practices
Which are?
9) Review tables and their indexes being used in the SQL queries and avoid unnecessary Table scanning
You mean design your database and queries properly? And table scanning is not always bad.
10) Avoid costly Full Table Scan on Big Transaction tables with Huge data volume,
It depends if that is necessary or not.
11) Use appropriate filtration condition on index columns of seeded Oracle tables directly mapped to program parameters
No, consider that too many indexes can have an impact on overall performance and can prevent the CBO from picking the best plan. There's far more to creating indexes than just picking every column that people are likely to search on; you have to consider the cardinality and selectivity of data, as well as the volumes of data being searched and the most common search requirements.
12) Review Join condition on existing query explain plan
Well, if you don't have your join conditions right then your query won't work, so that's obvious.
13) Use Oracle hint to guide Oracle Cost based optimizer to choose best plan for your custom queries
No. Oracle recommends you do not use hints for query optimization (it says so in the documentation). Only certain hints such as APPEND etc. which are more related to certain operations such as inserting data etc. are acceptable in general. Oracle recommends you use the query optimization tools to help optimize your queries rather than use hints.
14) Avoid applying SQL functions on index columns
Why? If there's a need for a function based index, then it should be used.
15) Use appropriate hint to guide Oracle CBO to choose best plan to reduce response time
See 13.
In short, there are no silver bullets for dealing with performance. Each situation is different and needs to be evaluated on its own merits. -
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I have made a Flash gallery that works in DW but not in browsers
Hi, I am fairly new to Flash and Dreamweaver and have encountered a problem with my CS4 Dreamwever and Flash. I have made two galleries in flash of 30-40 stills that change after 2 seconds in time line. I saved these and exported to DW as .swf files.
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How to allow user to modify his own data with a Portal Form
Hi, I have a form (Master-Detail) to update a user-profile (Master) and the user's skills (Detail). How can I make sure, that a user can only modify his own profile - assuming the master table has an attribute containing the users loginname for Porta
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Extracting Directory Structure of System in Java
Please someone let me know that how can i extract the Directory Structure of the system (on which the application is running) in Java. and then how can i display it in the Jtree . The requirement is just like that of Windows Explorer. In the Explorer
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Navigation buttons and many such icons show up like a add-on bar during start-up
The icons show up for just a few seconds at the bottom of the browser window. Here is the screenshot http://postimg.org/image/fx7buzsxj/