Using Database Control in JPDs - Best Practice

Hi,
I would like to know the best way of using DB control in a JPD
like.. which one is better.
a) Using a Control Send node in workshop and configuring it from the workshop design view as a separate node.
or
b) In a perform node call the method on the DB control object.
like..
* @common:control
private com.abc.def.SampleDBCtrl xxxx;
xxxx.insertIntoDb(parameter1, parameter2);
Is there any disadvantages on approach b over approach a or any issues performance-wise.
I would like to know which is one is better.
I sincerely appreciate ur advice on this.
Thanks

Hello,
I do not know the source of your problem, but
a.) Check if the db colum types match the parameter types
See http://e-docs.bea.com/workshop/docs81/doc/en/workshop/guide/controls/database/conMappingDBFieldsToJavaTypesInTheDBCtrl.html for more info
b.) command-type is only used for rowset controls.
-Kai

Similar Messages

Problem in using database control in JPD.

Hi All,
I am developing a JPD which also involves using DB control. The connected DB is Oracle 9.2.
I have created DB control with "insert" method and one with "update" method.
When i call "insert" method in JPD by dynamically passing values, it works fine. I have a "task control" in a JPD and once the task is complted by a specific user, again I am calling "update" method.
Here it fails to update the DB. The strange part is that the perform node executes after the control send node and there are no exceptions. Heres my update method
* @jc:sql command-type="update" statement::
* UPDATE PROPOSAL_INFO SET status = {status} WHERE track_num = {trackingNumber}
* @common:message-buffer enable="false"
void updateStatusAndDesc(String status,String trackingNumber);
The strange part is that, If I hard code the "status" and "trackingNumber" value instead of passing dynalically by using (ie without using {}), then update happens.
Can somebody suggest me the solution for this problem??
Thanks in advance,
Prashanth Bhat.

Hello,
I do not know the source of your problem, but
a.) Check if the db colum types match the parameter types
See http://e-docs.bea.com/workshop/docs81/doc/en/workshop/guide/controls/database/conMappingDBFieldsToJavaTypesInTheDBCtrl.html for more info
b.) command-type is only used for rowset controls.
-Kai

General Oracle Database Performance trouble solving best practice Steps

We use Oracle 11g DB on Windows2008R2 as web application backend DB.
We have peformance trouble in that DB.
I would like to know General Oracle Database Performance trouble solving best practice Steps.
Is there any good general best practice document for performace trouble solving in the internet ?

@Girish Sharma: I disagree with this. Many people say things like your phrase "..first identify the root cause and then move forward" but that is not the first step. Any such technique is nothing more than looking at some report, finding a number that you don't like, and attempting to "fix" it. Some people use that supposedly funny term "compulsive tuning disorder" (first used by Gaja Krishna Vaidyanatha) to describe this approach (also advocated in this topic by @Supriyo Dey). The first step must be to determine what the problem is. Until you know that, all those reports you mentioned (which, remember, require EE plus pack licences) are useless.
@teradata0802, your best practice starts by finding the problem. Is it, for example, that the overnight batch jobs don't finish until lunchtime? A screen takes 10 seconds to refresh, and your target is one second? A report takes half an hour, but you need to run it every five minutes? Determine what business function is causing your client to lose money because it is too slow. Then investigate what it is doing, how, and why. You have to begin by focussing on the problem, not by running database-wide reports..

How to Schedule Job using Database Control for SQLPLUS script?

Hi All,
I am using Database version 10.2. I would like to schedule a SQLPLUS script job using Database control (Not using Grid Control!). The following is the script.
========================================================
define OEM_FRIENDLY=1
define OWB_BACKGROUND=0
set serveroutput on
set verify off
whenever sqlerror exit failure;
define REPOS_OWNER='&1.'
define LOCATION_NAME='&2.'
define TASK_TYPE='&3.'
define TASK_NAME='&4.'
define SYSTEM_PARAMS='&5.'
define CUSTOM_PARAMS='&6.'
alter session set current_schema = &REPOS_OWNER.;
set role owb_d_&REPOS_OWNER., owb_o_&REPOS_OWNER.;
variable exec_return_code number;
begin
-- Initialize Return Code
:exec_return_code := wb_rt_api_exec.RESULT_FAILURE;
-- Run Task
:exec_return_code := wb_rt_api_exec.run_task('&LOCATION_NAME.',
'&TASK_TYPE.',
'&TASK_NAME.',
'&CUSTOM_PARAMS.',
'&SYSTEM_PARAMS.',
&OEM_FRIENDLY.,
&OWB_BACKGROUND.);
end;
exit :exec_return_code;
===========================================================
Is it possible to schedule SQLPLUS script with 6 different parameters? If yes then how can I schedule for monday to friday or only for Saturday and sundays.
Please provide brief steps.
Thanks for your help in advance.
- Mehul

Let me explain to you about scheduler.
You can schedule a pl/sql stored procedure TEST_S as follows...
Begin
dbms_scheduler.create_job(
job_name=>'MY_JOB',
Job_Type=>'STORED_PROCEDURE',
job_action=>'TEST_S',
start_date=>sysdate,
repeat_interval=>'freq=monthly;BYDAY=MON,TUE,WED,THU,FRI',
end_date=>null');
END;
You can also also execute o/s script like .bat or .sh. For this job type should be EXECUTABLE.
Example of converting a .sql script in .bat script...
insert.sql
insert into dept values(50,'IT','LONDON');
exit
insert.bat
sqlplus scott/tiger @insert.sql
Executing now...
C:\Documents and Settings>insert.bat
C:\Documents and Settings>sqlplus scott/tiger @insert.sql
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Mar 1 08:01:00 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
1 row created.
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - P
oduction
With the Partitioning, OLAP and Data Mining options
C:\Documents and Settings>
So first read about DBMS_SCHEDULER and do the work in prompt. Then you can go and schedule it even by database control.
Scheduling by database control...
http://www.oracle.com/technology/oramag/oracle/04-jul/o44tech_dba.html
Scheduler
http://download-uk.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_sched.htm#CIHEHDHA
PS: By default each job you created is disable state. Please enable it by enable procedure of DBMS_SCHEDULER package.

How to use database control to execute sql queries which change at run time

Hi all,
I need to execute sql queries using database controls , where the sql changes
at run time
based on some condition. For eg. based on the condition , I can add some where
condition.
Eg. sql = select id,name from emp where id = ?.
based on some condition , I can add the following condition .
and location = ?.
Have anybody had this kind of situation.
thanks,
sathish

From the perspective of the database control, you've got two options:
1) use the sql: keyword to do parameter substitution. Your observation
about {foo} style sbustitution is correct -- this is like using a
PreparedStatement. To do substitution into the rest of the SQL
statement, you can use the {sql: foo} substitution syntax which was
undocumented in GA but is documented in SP2. Then, you can build up
the filter clause String yourself in a JPF / JWS / etc and pass it into
the DB control.
For example:
* @jc:sql statement="select * from product {sql: filter}"
public Product[] getProducts(String filter) throws SQLException;
This will substitute the String filter directly into the statement that
is executed. The filter string could be null, "", "WHERE ID=12345", etc.
2) you can use the DatabaseFilter object to build up a set of custom
sorts and filters and pass that object into the DB control method.
There have been other posts here about doing this, look for the subject
"DatabaseFilter example".
Hope that helps...
Eddie
Dan Hayes wrote:
"Sathish Venkatesan" <[email protected]> wrote:
Hi Maruthi,
The parameter substituion , I guess is used like setting the values for
prepared
statements.
What I'm trying to do , is change the sql at run time based on some condition.
For example ,
consider the following query :
select col1,col2 from table t where t.col3 > 1
At run time , based on some condition , I need to add one more and condition.
i.e. select col1,col2 from table t where t.col3 > 1 and t.col4 < 10.
This MAY not address your issue but if you are trying to add "optional" parameters
you may try including ALL the possible parameters in the SQL but send in null
for those params that you don't want to filter on in any particular case. Then,
if you word your query
as follows:
select col1, col2 from table t where t.col3 > 1 and (t.col4 = {col4param} or
{col4param} is null) and (t.col5 = {col5param} or {col5param} is null) ...
you will get "dynamic" filters. In other words, col4 and col5 will only be
filtered if you send in non-null parameters for those arguments.
I have not tried this in a WL Workshop database control but I've used
this strategy dozens of times in stored procedures or jdbc prepared statements.
Good luck,
Dan

Problem receiving email using database control

Hi all,
I'm new to using EM and trying to configure it so I can receive email notifications when tablespace is getting full. I'm only using "Database Control" not Grid control.
Oracle Enterprise Manager Database Control 10.2.0.0
I was able to successfully receive email using "Test Mail Servers" in Notification Methods.
I already defined my rule and was able to specify "Tablespace Used %" metrics.
I already defined a schedule so that mails are sent to my email.
To test, i created records on one table until it's 100%.
I do get alerts with EM Database Control but no mail.
I logged in as sysman into the database being monitored (there is no repository because this is database control), I don't see any rows in mgmg_notification_log.
Does anybody know if email notification only works in "Grid Control" not "Database Control"?
I'd appreciate any assistance.

Grid Control has hundreds of email alerts already setup that you can use , but I pretty sure you need to buy
that pack for email alerts to keep them in service after you evaluate.

Unicode Migration using National Characterset data types - Best Practice ?

I know that Oracle discourages the use of the national characterset and national characterset data types(NCHAR, NVARCHAR) but that is the route my company has decide to take and I would like to know what is the best practice regarding this specifically in relation to stored procedures.
The database schema is being converted by changing all CHAR, VARCHAR and CLOB data types to NCHAR, NVARCHAR and NCLOB data types respectively and I would appreciate any suggestions regarding the changes that need to be made to stored procedures and if there are any hard and fast rules that need to be followed.
Specific questions that I have are :
1. Do CHAR and VARCHAR parameters need to be changed to NCHAR and NVARCHAR types ?
2. Do CHAR and VARCHAR variables need to be changed to NCHAR and NVARCHAR types ?
3. Do string literals need to be prefixed with 'N' in all cases ? e.g.
in variable assignments - v_module_name := N'ABCD'
in variable comparisons - IF v_sp_access_mode = N'DL'
in calls to other procedures passing string parameters - proc_xyz(v_module_name, N'String Parameter')
in database column comparisons - WHERE COLUMN_XYZ = N'ABCD'
If anybody has been through a similar exercise, please share your experience and point out any additional changes that may be required in other areas.
Database details are as follows and the application is written in COBOL and this is also being changed to be Unicode compliant:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
NLS_CHARACTERSET = WE8MSWIN1252
NLS_NCHAR_CHARACTERSET = AL16UTF16

##1. while doing a test convertion I discovered that VARCHAR paramaters need to be changed to NVARCHAR2 and not VARCHAR2, same for VARCHAR variables.
VARCHAR columns/parameters/variables should not by used as Oracle reserves the right to change their semantics in the future. You should use VARCHAR2/NVARCHAR2.
##3. Not sure I understand, are you saying that unicode columns(NVARCHAR2, NCHAR) in the database will only be able to store character strings made up from WE8MSWIN1252 characters ?
No, I meant literals. You cannot include non-WE8MSWIN1252 characters into a literal. Actually, you can include them under certain conditions but they will be transformed to an escaped form. See also the UNISTR function.
## Reason given for going down this route is that our application works with SQL Server and Oracle and this was the best option
## to keep the code/schemas consistent between the two databases
First, you have to keep two sets of scripts anyway because syntax of DDL is different between SQL Server and Oracle. There is therefore little benefit of just keeping the data type names the same while so many things need to be different. If I designed your system, I would use a DB-agnostic object repository and a script generator to produce either SQL Server or Oracle scripts with the appropriate data types or at least I would use some placeholder syntax to replace placeholders with appropriate data types per target system in the application installer.
## I don't know if it is possible to create a database in SQL Server with a Unicode characterset/collation like you can in Oracle, that would have been the better option.
I am not an SQL Server expert but I think VARCHAR data types are restricted to Windows ANSI code pages and those do not include Unicode.
-- Sergiusz

Usage of Efxclipse Controls like FilterableTreeTable - Best practice?

Hello all,
what is best practice of using efxclipse controls?
currently i have linked the needed jars from the eclipse plugins folder (i.e. efxclipse controls jar) to my project to use features like the FilterableTreeTable. But.. this can not be the best practice. If there is no maven support, there should be another solution, right?!
thanks in advance and best regards,
Frank

Hi,
I published the controls bundle to
https://oss.sonatype.org/content/repositories/releases/ including all
the transitive dependencies.
> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
> <modelVersion>4.0.0</modelVersion>
> <groupId>my.test</groupId>
> <artifactId>my.test.app</artifactId>
> <version>0.0.1-SNAPSHOT</version>
>
> <dependencies>
> <dependency>
> <groupId>at.bestsolution.eclipse</groupId>
> <artifactId>org.eclipse.fx.ui.controls</artifactId>
> <version>2.0.0</version>
> </dependency>
> </dependencies>
>
> <repositories>
> <repository>
> <id>oss</id>
> <url>https://oss.sonatype.org/content/repositories/releases/</url>
> </repository>
> </repositories>
>
> </project>
I'll publish more artifacts in the days to come.
Tom
On 13.07.15 22:25, Thomas Schindl wrote:
> It's on my todo list to publish some parts of efxclipse at maven Central
> but i did not yet had time - i'll keep you posted

Problem mapping to XMLBean using database control

Hi
I have to generate an XML document based on the values returned from the database. I have an industry standard XSD with me and Im trying to use the database control to automatically map the resultset data to the XMLBean. While doing so, it works fine for flat structures that doesnt contain any complex types and attributes. But, when the XSD contains attributes or nested complex types it creates XMLBean with a flat structure and generates an invalid XML document. All the attributes get mapped to elements and thus when i try to validate, it fails.
I would appreciate if anyone can let me know if this is a limitation in weblogic 8.1 or do i need to configure something. This problem has been bugging me for a very long time and i have posted in all forums and i strongly feel that there is no point checking for everyfield value and setting into XMLBean manually. Also the number of fields in our XSD is 400. So any help would be greatly appreciated.
Thanks
Kishore

Hi Kishore,
This is vinod.I have same problem but not too complicated as yours.It is written u got simple values from database using flat structures.could u please post the code for me.
We have this requirement:
We have to retrieve the each row from the database and display in form of a tree.how do we get it.
Thanx in advance.
Vinodh

Database Primary Key Question - Best Practices

I posted this in the ADDT forum, but I imagine I'll get more
responses here:
All you database developers - how do you deal with primary
keys? Do you
ALWAYS use an AutoIncrement/AutoNumber? Or only sometimes? Is
there an
argument to NOT use AutoIncrement? I know how I create
databases and how
I usually do things. I know how a few of my colleagues work.
But how
about the rest of the world? (Research for a MS Access book I
am
involved with.)
Alec
Adobe Community Expert

.oO(Alec)
>I posted this in the ADDT forum, but I imagine I'll get
more responses here:
>All you database developers - how do you deal with
primary keys? Do you
>ALWAYS use an AutoIncrement/AutoNumber?
No.
>Or only sometimes? Is there an
>argument to NOT use AutoIncrement?
AUTO_INCREMENT is a proprietary MySQL feature. For some
people this
might be an argument against it, but doesn't have to. Every
DBMS has its
own special features. You just have to decide whether you
want to keep
your code/queries as portable as possible or want to get the
most out of
your DB. Usually I prefer performance/features over
portability, simply
because for me and my projects it's very unlikely that I have
to change
the DBMS. I've chosen MySQL for good reasons and will stay
with it for
quite a while.
>I know how I create databases and how
>I usually do things. I know how a few of my colleagues
work. But how
>about the rest of the world? (Research for a MS Access
book I am
>involved with.)
It always depends on the table itself, what data it contains,
what I
want to do with it and also some personal preferences. In n:m
tables for
example there's no need for an extra numeric PK, since the
entire record
already is the PK, built from two or more FKs.
But if I need a numeric PK, I usually use sequences. Some
DBMS support
them natively, in MySQL they can be emulated with an extra
table. It
simply means, that the used PK number is generated _before_
the record
itself is inserted. For me and my framework this has some
advantages
(makes the internal work a bit easier), but of course in
other cases an
AUTO_INCREMENT might be more appropriate.
So IMHO there's no general solution. If an AUTO_INCREMENT or
something
similar fits your needs, you should use it. I don't see a
real problem
with that.
Micha

ORACLE 11g Database Parameters (Datawarehouse) - Recommended/Best Practice

Hi all
What are the generally recommeded database parameter settings for a a VLDB datawarehouse implementation with regards to:
- Online Redo log file size
- Number of Redo log file

Fahd Mirza wrote:
In My data warehouse of size just above 2TB, I have three tablespaces for three different schemas. One is for staging, other is for history and the other is for analysis and some near real time data. I use 3 bigfile table spaces of sizes 700G. The version of database is 11gR1 on Solaris 5.10, and I use ASM.
Fahd,
What's your backup startegy ?
Have you enabled "change tracking" so that rman can use proper incremental backups, or do you let rman scan the entire 700GB file to identify changed blocks, or do you use some type of "split mirror"/"snapshot" method offered by the hardware vendor ?
What's your resilience/recovery strategy ?
The OP is talking about lots of "nologging" activities - is your system similar, or do you force logging and run with a standby to protect yourself against failure.
(I kow I'm addressing the questions to you, but they're really there to prompt the OP to think about some of the related issues, and you may have some good answers that will help him/her.)
Regards
Jonathan Lewis

Help - Database Growth and loading best practice

Dear all,
I'm using NW 7.1
my data are consuming lots of space. I notice my data are grow at 20Gb per 2 month.
I wonder why the growth is so fast.
I using process chain to load my data and I always delete my data before full update my cube.
I kept only 1 week worth of data in my psa.
I do upload all my master data daily. ( full and delta upload )
Please advice
Regards,
-Dedys

Hi,
I have open the table space and here things that show at the table spaces
PSAPSR3     140.000,00     10.018,13     93
PSAPSR3700     21.600,00     1.421,81             93
PSAPSR3DB     5.000,00       1.639,81             67
PSAPSR3USR     20,00             19,31             3
PSAPTEMP     1.000,00       998,00             0
PSAPUNDO     9.020,00       8.624,94             4
SYSAUX             320,00             55,25             83
SYSTEM             560,00             7,50                     99
the one that always full is the PSAPSR3
what kind of data that is in the PSAPSR3 category ?
please advice

Using Liquid, what is the best practice for handling pagination when you have more than 500 items?

Right now I can only get the first 500 items of my webapp, and don't know how to show the rest of the items.
IN MY PAGE:
{module_webapps id="16734" filter="all" template="/Layouts/WebApps/Applications/dashboard-list-a.tpl" render="collection"}
IN MY TEMPLATE LAYOUT:
{% for item in items %}
<tr>
<td class="name"><a href="{{item.url}}">{{item.name}}</a></td>
<td class="status">Application {{item.['application status']}}</td>
</tr>
{%endfor%}

<a href="{{webApp.pagination.previousPageUrl}}">Previous Page</a>
Current Page: {{webApp.pagination.currentPage}}
<a href="{{webApp.pagination.nextPageUrl}}">Next Page</a>

Error using RMAN thru Database Control

Hello guys..
I installed Oracle 10gR2 on solaris 10, and created a sample DB called HEAT. This database is configured to run in Archivelog mode and also created Flash_recovery_area.
Iam trying to take a simple backup thru RMAN using OEM ( Database Control). there is only 1 database on that server and i plan to use controlfile instead of recovery catalog.
Now here are the steps when i execute, i get an ERROR.
1. connected as 'sys' from Database Control.
2. Went to Maintenence Tab, click in Backup settings.
3. click on Device Tab, enter OS credentials and click on "Test disk backup"..
4. I get an error that says "Disk Backup Test Failed!"
When click on View Error Details :
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Recovery Manager: Release 10.2.0.1.0 - Production on Fri Feb 2 12:53:29 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
RMAN>
connected to target database (not started)
RMAN>
echo set on
RMAN> run {
2> allocate channel oem_disk_backup device type disk;
3> backup as BACKUPSET current controlfile tag '02022007125328';
4> restore controlfile validate from tag '02022007125328';
5> release channel oem_disk_backup;
6> }
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of allocate command at 02/02/2007 12:53:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN> allocate channel for maintenance type disk;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of allocate command at 02/02/2007 12:53:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN> delete noprompt backuppiece tag '02022007125328';
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of delete command at 02/02/2007 12:53:30
RMAN-12010: automatic channel allocation initialization failed
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN> exit;
Recovery Manager complete.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I only have 1 database , and it is configured to backup using Control file and not Recovery catalog ( which is the default)...
What additional steps do i have to do, to take a simple backup using database control ? I am not sure why it says Database not available...while DB is indeed available and open.
any help is appreciated..
thanks

I, too, am receiving these same errors when I do my backups. The sysadmin took the systems down over the weekend and the backup has failed ever since. Database is up, ORACLE_SID looks fine, what could be wrong? This nightly backup worked before system went down. I can connect as sysdba using the ORACLE_SID as set.
Thanks,
Candy

Best practice when developing APEX apps and using a SVN repository

Hi experts,
I wanted to get your opinion on best practice regarding how to use SVN and APEX combined.
The idea is basically how to structure and how to save APEX apps the best way in a repository.
I am currently working with a custom SVN structure, not using the default TRUNC/TAGS one : every app has a folder , under every app folder i have PAge number folders, and for each page reports, regions and global objects separated.
This helps me because its more readable then saving the whole page export, its good for small changes and i have a clear overview of every bit and piece.
What is everybody else using or is there a best practice to follow here that i dont know?
Kind regards,
Alex

@tomaugerdotcom
Something like this might help: https://testflightapp.com/
Concevably, you could roll your own internal service if that particular one doesn't suit you. (I don't have any knowledge about how they are doing it, but it shouldn't be hard to figure out since Apple's constraining rules would only allow a few possibilities.)
USB app install and debugging isn't supported on iOS. You have to use wireless.
Another option specifically for multi-touch dev/testing, is to use an Android device.

Using Database Control in JPDs - Best Practice

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