Why i need to run autoconfig?
in cloning, after database rebuild, canging the databaseid, cleaning the nodes, updating fnd_con_reqs is
there any need to run autoconfig...? if so what is the reason..?
AutoConfig is a configuration tool that automates the configuration of an Oracle Applications system. The information required for configuring an Applications system is collected into a repository, called the Applications Context. Whenever you do any change in the configuration (change hostname, port pool, domain name, .. etc), you need to correct the values in the Application Context File and run AutoConfig. By doing this, AutoConfig will generate all the configuration files and update the database profile options with the correct values (instead of doing that manually).
If you need more details about AutoConfig, please refer to:
Note: 218089.1 - Autoconfig FAQ
https://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=218089.1
Similar Messages
-
Why the need to "run as administrator"?
Our of curiousity, why do I need to run Premiere Elements 8 using the "Run as administrator" in Windows 7?
It is a bit annoying to have to type in a password just to run Premiere Elements 8 since I never use the administrator account to anything.I dont run Win7, but I do run Vista-64, and I can attest to the fact that the Windows Security framework is a dark hole that is difficult for most to navigate thru and completely understand.
One can assume that with Win7, it's still a grey area that needs an official decoder ring for even the simple tasks.
I always install PE from the Admin Login and just give the rights to any User Account on the system.
With this approach I've never run into the situation where it must be Run as an Administrator.
If I'm not mistaken, PE may even require an Install from the Admin Login (I can't verify cause it's been so long that I've done the Install, that I don't remember).
The bottom line is if a particular Windows Object, PE in this case, is Owned by a particular Group or User, depending on it's Permissions and/or Access Rights will determine who can Run, Execute, or Modify that Object.
And unless your a Security maven, this could get real ugly, real fast (and you can screw up your System in a heartbeat if you don't know what your doing in this area).
Now you see why I install and Run it under the Admin Login and call it a day... -
Localconfig.bat needs to run when start ASM
Hi All,
I am using ORACLE 10g R2 (10.2.0.4). I want to use ASM on Windows?
I have two query for that:
1- can I use ASM for windows? or it benificial only for Linux os?
2- why I need to run "localconfig.bat" file for standalone db? this batch file is creating "OCR" keay and some CSS service. According to my knowledge this OCR and CSS is a part of Cluster.
Can any one guide me on this topic?
Thanks...hi
in regard to 1st Q - ASM is the recommended storage for Oracle on all platforms, especially when DB is in ARCHIVELOG (RMAN benefits plus listed below).
However for some DB's like e.g. "calculating only" ones, the Windows NTFS is a good choice (fast).
Quote:
ASM is one the best things that has happened to Oracle since a long time and is quickly maturing into the de facto standard for Oracle
database storage. It is the most cost-effective automated database storage solution for Oracle and Grid computing
as it eliminates the need to perform guesswork when implementing and tuning database storage, eliminates the need for costly LVMs,
eliminates the need to perform manual IO rebalancing, eliminates unnecessary downtime with storage reorganization
and vastly improves DBA’s productivity.
It allows the company’s storage to be most effectively used and consolidated leveraging Oracle’s cluster technology.
It is the present and future. -
Why do I need to run report RV80HGENu00A0to activate routine in QAS?
Hi SD gurus,
Every time I executed VL02N then click on post button I get an abap dump "CX_SY_DYN_CALL_ILLEGAL_FORM". I've learned that i have to run report RV80HGEN to activate the routine in QAS. My question is why do I have to run this report that I never ran in DEV? If you have SAP Notes it will be highly appreciated.
Thanks and regards,
JoelHi Joel,
The reply is already given for this.
In development you dont need to run this because, when the program is created, the technical tables are automatically generated for usage. However when you move this to the target system, you manually have to execute the program to activate these table entries for the routine.
You can also include this program in the transport where the routine is saved. In this case, when the routine moves to the target system, the program automatically runs and the routine will be generated in the target system. -
As of late I am unable to run forwarded videos ie utube ect on safari- my MAC tells me I need adobe flash- got it still neg - now my bank statement is in PDF format and my MACtells me I need adobe reader - got it still neg WHY CAN'T I RUN THESE THINGS ON SAFARI???
Hi...
For videos. Uninstall the current Flash plugin then reinstall new > Troubleshoot Flash Player | Mac OS
Quit then relaunch Safari. From the Safari menu bar click Safari > Empty Cache
Try a video.
All online bank statments are in PDF format.
Go to /Library/Internet Plug-Ins
Move the Adobe PDF Browser plugin (or just PDF Browser plugin) to the Trash.
Now try a bank statement. -
When I try to upgrade and install to iOS 5.1, error message prompt "operation stop running". I have tried several time but failed. Also, would like to know why always need to have wifi access in order to upgrade the version of iPad iOS, what is the purpose of 3G then? This is really nonsense using wifi + 3G iPad. need help ! Thanks.
The file is too large to download via 3G. There is a 20MB limit with 3G. The purpose of having 3G is that you have internet access everywhere and do not need to be near a WiFi hotspot or network.
Not every single thing that you do every single minute of the day on the iPad involves downloading files larger than 20MB. You can surf the internet all day long sitting out in a park somewhere with 3G - but not with a WiFi only iPad - unless you use a hotspot with it.
Try turning off your firewall and anti virus software while you try to download the iOS update. -
What is variants...why we need to create these in bw for processchains run
what is variants...why we need to create these in bw for processchains run
Process Variant lets u select on what all Objects the process type need to process on.
http://help.sap.com/saphelp_nw04/helpdata/en/6e/192756029db54192427cf6853c77a7/content.htm
Ex : Create Index Variant will have the Cube name for which( Load ) the Indexes are created. -
Why we need to change apps pwd using fndcpass only?
why we need to change apps pwd using fndcpass only?
can't we change using alter user......?See the following note.
Note:160337.1 How To Manually Change The APPS, APPLSYS and APPLSYSPUB Passwords in Oracle Applications
This is critical. No support if you use this way to change password. This should be the last option. Recommended is using FNDCPASS.
=======
After using FNDCPASS to change Apps password, you have to run AutoConfig. AutoConfig will take care of changing/modifying all files and profile options. so you will not need to update any file manually.
- Stop all application services
- Use FNDCPASS to change the password
FNDCPASS apps/pwd 0 Y system/pwd SYSTEM APPLSYS <new_pwd>
- Run AutoConfig
- Bounce all application services -
Help needed to run JSTL 1.1 in Tomcat 6.0.16
Hi All,Help needed to run JSTL 1.1 in Tomcat 6.0.16. I am trying to run the example given in http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html The example tries to connect to MySQL database from JSP using JSTL and JNDI Datasource.I am running the example using Eclipse 3.4.2 using Sysdeo plugin to start and stop Tomcat server from Eclipse IDE.
My web.xml file has <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
</web-app>
and test.jsp has proper taglib directives
<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
I have placed the jstl.jar and standard.jarof the jakarta-taglibs-standard-1.1.2.zip under E:\Deepa\workspace\DBTest\WebContent\WEB-INF\lib directory also placedcontext.xml file under E:\Deepa\workspace\DBTest\WebContent\META-INF and the content of context.xml is as below
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">
<Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="10000"
username="deepa" password="mysql" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/javatest?autoReconnect=true"/>
</Context>
Now while running the example, Eclipse creates one DBTest.xml file under C:\Program Files\Apache Software Foundation\Tomcat 6.0\conf\Catalina\localhost
which has the following line:
<Context path="/DBTest" reloadable="true" docBase="E:\Deepa\workspace\DBTest" workDir="E:\Deepa\workspace\DBTest\work" />
I am getting the following error when running http://localhost/DBTest/WebContent/test.jsp
in Browser:
<HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/sql cannot be resolved in either web.xml or the jar files deployed with this application
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:116)
org.apache.jasper.compiler.TagLibraryInfoImpl.generateTLDLocation(TagLibraryInfoImpl.java:315)
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:148)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:431)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:494)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1444)
org.apache.jasper.compiler.Parser.parse(Parser.java:138)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:216)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:154)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:315)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:282)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
In the Tomcat Server console, I am getting the following error:
INFO: Server startup in 7295 ms
May 20, 2009 6:36:48 AM org.apache.jasper.compiler.TldLocationsCache processWebDotXml
WARNING: Internal Error: File /WEB-INF/web.xml not found
May 20, 2009 6:36:48 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/sql cannot be resolved in either web.xml or the jar files deployed with this application
what is the problem with my code?
When running the same example, by creating a local server in Eclipse(creating new Server connection pointing to same Tomcat 6.0 installation) it runs fine without any error.Hi evnafets,
Wow, very helpful information, great insight into working of Eclipse. Thanks a lot.
I have one more question. I have a context.xml file under {color:#0000ff}E:\Deepa\workspace\DBTest\WebContent\META-INF{color} folder and that has the Resource element to connect to MySQL database:
{code{color:#000000}}{color}<Context path="/DBTest" docBase="DBTest" debug="5" reloadable="true" crossContext="true">
<Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="deepa" password="mysql" driverClassName="com.mysql.jdbc.Driver"
{color:#0000ff}url="jdbc:mysql://localhost:3306/javatest?autoReconnect=true"/>{color}
{color:#0000ff}</Context>{color}As usual when running application in local Tomcat server of Eclipse, this data source works fine. But when I run the application on Tomcat, by starting Sysdeo plugin from Eclipse, the DBTest.xml file created in C:\Tomcat 6.0\conf\Catalina\localhost has the context entry as<Context path="/DBTest" reloadable="true" docBase="E:\Deepa\workspace\DBTest\WebContent" workDir="E:\Deepa\workspace\DBTest\work">
</Context>The<Resource> element I have specified in the context.xml of \WebContent\META-INF folder is not taken into account by Tomcat and it gives the following error:May 21, 2009 5:20:04 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "org.apache.tomcat.dbcp.dbcp.SQLNestedException_: Cannot create JDBC driver of class '' for connect URL 'null'"
_at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(_QueryTagSupport.java:276_)
at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(_QueryTagSupport.java:159_)
at org.apache.jsp.test_jsp._jspx_meth_sql_005fquery_005f0(_test_jsp.java:113_)
at org.apache.jsp.test_jsp._jspService(_test_jsp.java:66_)
at org.apache.jasper.runtime.HttpJspBase.service(_HttpJspBase.java:70_)
at javax.servlet.http.HttpServlet.service(_HttpServlet.java:717_)
at org.apache.jasper.servlet.JspServletWrapper.service(_JspServletWrapper.java:374_)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(_JspServlet.java:342_)
at org.apache.jasper.servlet.JspServlet.service(_JspServlet.java:267_)
at javax.servlet.http.HttpServlet.service(_HttpServlet.java:717_)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(_ApplicationFilterChain.java:290_)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(_ApplicationFilterChain.java:206_)
at org.apache.catalina.core.StandardWrapperValve.invoke(_StandardWrapperValve.java:233_)
at org.apache.catalina.core.StandardContextValve.invoke(_StandardContextValve.java:191_)
at org.apache.catalina.core.StandardHostValve.invoke(_StandardHostValve.java:128_)
at org.apache.catalina.valves.ErrorReportValve.invoke(_ErrorReportValve.java:102_)
at org.apache.catalina.core.StandardEngineValve.invoke(_StandardEngineValve.java:109_)
at org.apache.catalina.connector.CoyoteAdapter.service(_CoyoteAdapter.java:286_)
at org.apache.coyote.http11.Http11Processor.process(_Http11Processor.java:845_)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(_Http11Protocol.java:583_)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(_JIoEndpoint.java:447_)
at java.lang.Thread.run(_Thread.java:619_)
{code}
So to overcome this error I had to place the <Resource> element in DBTest.xml under C:\Tomcat 6.0\conf\Catalina\localhost {color:#000000}and then it works fine. {color}{color:#ff0000}*Why is the context.xml file in META-INF not considered by Tomcat server using Sysdeo Plugin?*
*Thanks,*
*Deepa*{color}
{color}
Edited by: Deepa76 on May 26, 2009 9:32 PM -
Cron job help- Need to run the Autobuddy command every night...
I have not written anything in the form of a Unix script for YEARS and YEARS. Our XServe was built in Advanced mode, currently running 10.5.4 Server. On this box, we are running Wiki and iChat. Since we built this box as an Advanced box the "Autobuddy" option was not available.
I have since enabled it at the command line, but I am told by Apple that there still needs to be a command run after every time a user logs in if you want others to Autobuddy. That command is this:
"sudo /usr/bin/jabber_autobuddy -m"
Now I think this would be pretty easy to setup as an automatic cron script, but like I said, I have not written something like this in forever. Not to mention, I am not 100% sure what needs to happen since running the script with an sudo command will prompt for the root password.
I was wondering if anyone would be able to help me write the script up, and give me some instructions on how to install it. I just want it run everyday, midnight is fine, I don't really care. All I know is that we have a dept of 150 people, and it grows and shrinks all the time. They can deal with a new user not being seen for 24-48 hours, I just want to get this automated.
Any helps would be GREATLY appreciated!
Thanks
TomIf you want to keep it simple try [CronniX|http://www.abstracture.de/projects-en/cronnix] a graphical tool for setting up CRON jobs on OSX. Whilst I have not actually done an autobuuddy in this way, I cannot see any reason why it will not run as a Cron Job.
The proper way ideally would be to use the launchd service.
Something like this should work:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>org.jabber.dailyautobuddy</string>
<key>ProgramArguments</key>
<array>
<string>/usr/bin/jabber_autobuddy</string>
<string>-m</string>
</array>
<key>LowPriorityIO</key>
<true/>
<key><UserName></key>
<string>admin</string>
<key>StartCalendarInterval</key>
<dict>
<key>Hour</key>
<integer>0</integer>
<key>Minute</key>
<integer>05</integer>
</dict>
</dict>
</plist>
(not sure why, but tabs are not showing up, making this hard to read)
Message was edited by: Tim Harris -
Hi friends,
i need to run a package which will send a mail as soon after it runned. I have a package. But i need to run that package for each and every 10 min in a day. For that how i can create a job to execute that package.
As a result of the job for each and every 10 min ill be receiving a mail. How to create a job to execute my package for every 10 min.
Regards,
MiniHi srikanth and hoek,
Thanks for your reply.
i dont know why the job is not running and executing the package.
if i compiled the package separately means, i can able to execute it successfully and also im receiving mails correspondingly.
begin
it_check_overdue_issues.email_overdue;
end;But if i tried to execute the above package using a job means, it is not running corresponding to the time and also not receiving emails. This is my DBMS_JOB query that i used, it is compiling successfully without errors, but not working what is wrong with it.
DECLARE
jobno number;
BEGIN
DBMS_JOB.SUBMIT(
job => jobno,
what => 'BEGIN it_check_overdue_issues.email_overdue; END;',
next_date => SYSDATE,
interval => 'SYSDATE + (2/1440)');
COMMIT;
END;Regards,
Mini -
Do I need to run DNS on a colo server being accessed remotely via VPN?
My Mac Mini Server is located in a colo site. We generally use it for Web, email and a couple of application-specific services. It has a dedicated IP address. We have a separate DNS service we use to point to the domains on the server located remotely from the server. Forward and reverse lookups work fine from the server, even though the local DNS service is turned off.
However, we now have a couple of things we want to access remotely on the server via VPN (for example, some files via AFP). The firewall blocks remote AFP requests (using the built-in firewall, not a separate box). We can connect via VPN without problems. However, AFP does not work. If I allow AFP in the firewall and try to connect, no problems at all.
Since the Mini is located by itself and will never likely have anything connected to a "local network" (never running DHCP, etc.), there generally doesn't seem to be a need to run DNS on the server.
I suspect the problem is that when you VPN into the server you are on its "local network", whatever that means, so the DNS does not resolve since the local DNS service is not running. However, I am not positive of this.
Must we run local DNS? Does it have to mirror the remote DNS that we currently reference? Can we somehow "reference" the local DNS from VPN clients trying to access local services?
I hope this question makes some sense.Bear with me please....
The Mac Mini is in a data center on a shelf, getting a direct connection to the Internet via ethernet with a fixed IP address (under the covers, I suspect that the data center is using some sort of router or switch, but I am not paying for a hardware firewall or other gateway). There is no local network for the Mini. It is not running DHCP, not handing out NAT addresses, etc. DNS is currently off. Rather than using the local DNS, the Mini is resolving its DNS needs with a DNS server located at another site, over the Internet. This seems to work fine (i.e., changeip confirms it is working and services seem to work).
I am currently using the software firewall built into SLS.
I want to turn on VPN so that remotely located computers can access services on the Mini without having to make the services visible through the firewall.
I am able to connect devices via VPN with little difficulty (iPhones, Macs, etc.). However, when I try to access services (let's use AFP as an example), I cannot access them UNLESS they are allowed through the firewall. This tells me that I am not seeing the services through the VPN, but rather through the Internet directly.
What I meant by "local network" is that the VPN allocates local IP addresses when devices log into the VPN service (10.0.x.x). There is no DHCP allocating these addresses, just VPN.
My question is: why can I not see the services on the Mini blocked by the firewall when successfully logged into VPN on the server? Isn't the whole point of the VPN to gain access to services behind the firewall?
I am guessing (with no particular information to support my thesis) that somehow without DNS running on the Mini, VPN clients are unable to access services on the Mini. I do not know for sure, however, if this is the problem. If it IS a problem, then the question is whether I should completely copy the DNS entries from the remote DNS server to the Mini and start the service. Will that solve the issue? Create conflicts with the DNS (since it is now located on both a remote service and on the Mini)? It certainly will create a maintenance headache since now I will have to maintain the DNS in both places.
I am hesitant to migrate all of my DNS services to the Mini (because I will also have to go to the domain registrars to change where they point, etc.) to eliminate the remote one. And I am not sure it will solve this problem anyway.
Sorry for all of the typing! -
I need to run a program called Niagara. It will not run with Java 7 so I have uninstalled 7 and re-installed 6. Now, mozilla wants me to install a plugin in order to run the program. When I click install plugin, it takes me to the java site and wants me to download 7.
Do you get any Java error or security messages?
There has been a change in the Java security settings, see:
*http://kb.mozillazine.org/Java#Java_security_prompts
*"What should I do when I see a security prompt from Java?":<br>http://www.java.com/en/download/help/appsecuritydialogs.xml
If you visit a website regularly then a possible workaround is to add the URL to the Java Exceptions Site List, see:
*"Why are Java applications blocked by your security settings?":<br>http://www.java.com/en/download/help/java_blocked.xml
*"How can I configure the Exception Site List?":<br>http://www.java.com/en/download/faq/exception_sitelist.xml -
Hi Experts,
IF Auto Update Statistics ENABLED in Database Design, Why we need to Update Statistics as a maintenance plan for Daily/weekly??
Vinai Kumar GandlaHi Vikki,
Many systems rely solely on SQL Server to update statistics automatically(AUTO UPDATE STATISTICS enabled), however, based on my research, large tables, tables with uneven data distributions, tables with ever-increasing keys and tables that have significant
changes in distribution often require manual statistics updates as the following explanation.
1.If a table is very big, then waiting for 20% of rows to change before SQL Server automatically updates the statistics could mean that millions of rows are modified, added or removed before it happens. Depending on the workload patterns and the data,
this could mean the optimizer is choosing a substandard execution plans long before SQL Server reaches the threshold where it invalidates statistics for a table and starts to update them automatically. In such cases, you might consider updating statistics
manually for those tables on a defined schedule (while leaving AUTO UPDATE STATISTICS enabled so that SQL Server continues to maintain statistics for other tables).
2.In cases where you know data distribution in a column is "skewed", it may be necessary to update statistics manually with a full sample, or create a set of filtered statistics in order to generate query plans of good quality. Remember,
however, that sampling with FULLSCAN can be costly for larger tables, and must be done so as not to affect production performance.
3.It is quite common to see an ascending key, such as an IDENTITY or date/time data types, used as the leading column in an index. In such cases, the statistic for the key rarely matches the actual data, unless we update the Statistic manually after
every insert.
So in the case above, we could perform manual statistics updates by
creating a maintenance plan that will run the UPDATE STATISTICS command, and update statistics on a regular schedule. For more information about the process, please refer to the article:
https://www.simple-talk.com/sql/performance/managing-sql-server-statistics/
Regards,
Michelle Li -
Why is my sql running parallel ?
Hi,
NOTE: first, I thought sql developer tool is causing this and I opened a thread on that category, thanks to @rp0428's warnings and advises, I realized that something else is happening. so reopened this thread in that category, I also need an admin to delete other one:
https://forums.oracle.com/forums/thread.jspa?threadID=2420515&tstart=0
thanks.
so my problem is:
I have table partitioned by range (no subpartition) on a DATE column per months. It has almost 100 partitions. I run a query on that table based on partition column:
select *
from hareket_table
where islem_tar between to_date('01/05/2012', 'dd/mm/yyyy') and to_date('14/07/2012', 'dd/mm/yyyy') -- ISLEM_TAR is my partition column.so, when I run this query from sql developer, query works parallel. I didnt just get execution plan via sql developer interface, first I used "EXPLAIN PLAN FOR" statement (which I always do, I dont use developer tools interfaces generally) then used developer interface (just to be sure) but I didnt satisfied and then I run the query and and get real execution plan via:
select * from table(dbms_xplan.display_cursor(sql_id => '7cm8cz0k1y0zc', cursor_child_info =>0, format=>'OUTLINE'));and the same execution plan again with PARALLELISM. so INDEXES and TABLE has no parallelism (DEGREE column in DBA_INDEXES and DBA_TABLES is set to 1).
as I know, if I'm wrong please correct me, there is no reason to oracle run this query as parallel (I also did not give any hint). so I worried and run the same steps in "plsql developer" and query runs noparallel (inteface, explain plan for, dbms_xplan.display_cursor). sqlplus autotrace was the same( just autotrace, didnt try others dbms_xplan etc.) Based on that, I decided sql developer is causing to this (*edit: but I was wrong TOAD did same thing*).
so I focused on sql developer and I disabled parallel query using:
alter session disable parallel query;then run the statement again and there were no Parallelism (expectedly).
so looked for execution plans:
I run query twice. one with normal, one with session disabled parallel query. and look for executed execution plan for both. (child 0 and 1)
-- WHEN PARALLEL QUERY IS ENABLE, SESSION DEFAULT
-- JUST CONNECTED TO DATABASE
select * from table(dbms_xplan.display_cursor('7cm8cz0k1y0zc', 0, 'OUTLINE'));
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Pstart| Pstop | TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | | | 2025 (100)| | | | | | |
| 1 | PX COORDINATOR | | | | | | | | | | |
| 2 | PX SEND QC (RANDOM)| :TQ10000 | 7910K| 1267M| 2025 (2)| 00:00:01 | | | Q1,00 | P->S | QC (RAND) |
| 3 | PX BLOCK ITERATOR | | 7910K| 1267M| 2025 (2)| 00:00:01 | 90 | 92 | Q1,00 | PCWC | |
|* 4 | TABLE ACCESS FULL| HAREKET_TABLE | 7910K| 1267M| 2025 (2)| 00:00:01 | 90 | 92 | Q1,00 | PCWP | |
Outline Data
/*+
BEGIN_OUTLINE_DATA
IGNORE_OPTIM_EMBEDDED_HINTS
OPTIMIZER_FEATURES_ENABLE('11.2.0.2')
DB_VERSION('11.2.0.2')
OPT_PARAM('query_rewrite_enabled' 'false')
OPT_PARAM('optimizer_index_cost_adj' 30)
OPT_PARAM('optimizer_index_caching' 50)
OPT_PARAM('optimizer_dynamic_sampling' 6)
ALL_ROWS
OUTLINE_LEAF(@"SEL$1")
FULL(@"SEL$1" "HAREKET_TABLE"@"SEL$1")
END_OUTLINE_DATA
Predicate Information (identified by operation id):
4 - access(:Z>=:Z AND :Z<=:Z)
filter(("ISLEM_TAR">=TO_DATE(' 2012-05-14 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND "ISLEM_TAR"<=TO_DATE('
2012-07-14 00:00:00', 'syyyy-mm-dd hh24:mi:ss')))
--WHEN DISABLED PARALLEL QUERY
--AFTER CONNECTED, EXECUTED "ALTER SESSION DISABLE PARALLEL QUERY"
select * from table(dbms_xplan.display_cursor('7cm8cz0k1y0zc', 1, 'OUTLINE'));
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Pstart| Pstop |
| 0 | SELECT STATEMENT | | | | 36504 (100)| | | |
| 1 | PARTITION RANGE ITERATOR| | 7910K| 1267M| 36504 (2)| 00:00:04 | 90 | 92 |
|* 2 | TABLE ACCESS FULL | HAREKET_TABLE | 7910K| 1267M| 36504 (2)| 00:00:04 | 90 | 92 |
Outline Data
/*+
BEGIN_OUTLINE_DATA
IGNORE_OPTIM_EMBEDDED_HINTS
OPTIMIZER_FEATURES_ENABLE('11.2.0.2')
DB_VERSION('11.2.0.2')
OPT_PARAM('query_rewrite_enabled' 'false')
OPT_PARAM('optimizer_index_cost_adj' 30)
OPT_PARAM('optimizer_index_caching' 50)
ALL_ROWS
OUTLINE_LEAF(@"SEL$1")
FULL(@"SEL$1" "HAREKET_TABLE"@"SEL$1")
END_OUTLINE_DATA
Predicate Information (identified by operation id):
2 - filter(("ISLEM_TAR">=TO_DATE(' 2012-05-14 00:00:00', 'syyyy-mm-dd hh24:mi:ss') AND
"ISLEM_TAR"<=TO_DATE(' 2012-07-14 00:00:00', 'syyyy-mm-dd hh24:mi:ss')))
as you can see, when I've just connected to database (no any statements run) OPT_PARAM('optimizer_dynamic_sampling' 6) is in my stats.
when I disable parallel query on the session, this is not in stats...
value of optimizer_dynamic_sampling is 2 in DB. so why is that query runs parallel ? I don't want that.
thanks for answers>
NOTE: first, I thought sql developer tool is causing this and I opened a thread on that category, thanks to @rp0428's warnings and advises, I realized that something else is happening. so reopened this thread in that category, I also need an admin to delete other one:
https://forums.oracle.com/forums/thread.jspa?threadID=2420515&tstart=0
as you can see, when I've just connected to database (no any statements run) OPT_PARAM('optimizer_dynamic_sampling' 6) is in my stats.
when I disable parallel query on the session, this is not in stats...
value of optimizer_dynamic_sampling is 2 in DB. so why is that query runs parallel ? I don't want that.
>
I answered this question in that other thread, that is now gone. I pointed you to, and quoted from, a blog that tells you EXACTLY why that is happening. And I also gave you a link to an article by Oracle ACE and noted author Jonathan Lewis. You either didn't see the links or didn't read them.
Maria Colgan is an Oracle developer and a member of the optimizer developer team. She has many article on the net that talk about the optimizer, how it works, how to use it.
The one I pointed you to, and quoted from, is titled 'Dynamic sampling and its impact on the Optimizer'
https://blogs.oracle.com/optimizer/entry/dynamic_sampling_and_its_impact_on_the_optimizer
>
For serial SQL statements the dynamic sampling level will depend on the value of the OPTIMIZER_DYNAMIC_SAMPLING parameter and will not be triggered automatically by the optimizer. The reason for this is that serial statements are typically short running and any overhead at compile time could have a huge impact on their performance. Where as we expect parallel statements to be more resource intensive, so the additional overhead at compile time is worth it to ensure we can be best execution plan.
In our original example the SQL statement is serial, which is why we needed to manual set the value for OPTIMIZER_DYNAMIC_SAMPLING parameter. If we were to issue a similar style of query against a larger table that had the parallel attribute set we can see the dynamic sampling kicking in.
You should also note that setting OPTIMIZER_FEATURES_ENABLE to 9.2.0 or earlier will disable dynamic sampling all together.
When should you use dynamic sampling? DS is typically recommended when you know you are getting a bad execution plan due to complex predicates. However, you should try and use an alter session statement to set the value for OPTIMIZER_DYNAMIC_SAMPLING parameter as it can be extremely difficult to come up with a system-wide setting.
When is it not a good idea to use dynamic sampling? If the queries compile times need to be as fast as possible, for example, unrepeated OLTP queries where you can't amortize the additional cost of compilation over many executions.
>
If you read the article and particularly the first two paragraphs above Maria expalins why dynamic sampling was used in your case. And for a table with as many partitions as yours Oracle chose to use sampling level six (256 blocks, see article); a level of two would only sample 64 blocks and you have 90+ partitions. Oracle needs a good sample of partitions.
The Jonathan Lewis article is titled 'Dynamic Sampling'
http://jonathanlewis.wordpress.com/2010/02/23/dynamic-sampling/
This article can also shed light on sampling as he shows how it appears that sampling isn't being used and then shows that it actually is
>
We can see that we have statistics.
We can see that we delete 9002 rows
We can see that we have 998 rows left
We can see that the plan (and especially the cardinality of the full tablescan) doesn’t change even though we included a table-level hint to do dynamic sampling.
Moreoever – we can’t see the usual note that you get when the plan is dependent on a dynamic sample (” – dynamic sampling used for this statement”).
It looks as if dynamic sampling hasn’t happened.
However, I “know” that dynamic sampling is supposed to happen unconditionally when you use a table-level hint – so I’m not going to stop at this point. There are cases where you just have to move on from explain plan (or autotrace) and look at the 10053 trace.
So the optimizer did do dynamic sampling, but then decided that it wasn’t going to use the results for this query.
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