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Saturday, 2 December 2017

Oracle Forms 10G crashes on Internet Explorer while using Oracle JInitiator - FIXED


Problem: when running form modules using Internet Explorer and JInitiator 1.3.1.x, the browser window opens and crashes immediately before the applet starts. When using Mozilla Firefox, there’s no problem at all.

Several notes on Metalink about this: 602001.1, 430359.1, 550301.1
The issue does not occur when using Sun JRE version 1.4, 1.5 and 1.6.

This issue is first logged as JInitiator Bug 5643502 – INTERNET EXPLORER WITH WINDOWS LIVE TOOLBAR PLUG-IN CRASHES, but based on Sun Bug 4741238, the bug occurs in JRE version 1.3 (JInitiator is based on JRE 1.3) and the bug is fixed in JRE versions 1.4 and higher.

Solution according the notes
To avoid the crash,
(1) Use Sun JRE 1.4 and higher
– OR –
(2) Uninstall Windows Live Toolbar (or other software what you suspect is the cause)
– OR –
(3) Disable the toolbar’s associated Add-ons as the following:
1. Open Internet Explorer
2. From the menu open Tools -> Manage Add-ons -> Enable or Disable Add-ons
3. Select the following Add-ons and disable each of them by clicking the “Disable” button

– Windows Live Sign-In Helper
– Windows Live Toolbar
– Windows Live Toolbar Helper
– Windows Messenger
4. Restart Internet Explorer
– OR –
(4) Disable 3rd-party browser extensions as follows:
– From the browser menu Tools -> Internet Options -> Advanced
– Uncheck “Enable third-party browser extensions”

First I chose for the last option, the policy was changed by the Windows system administrators for all the clients in the network, and done.. But there were (un)expected side-affects, like a particular SSO-application couldn't be reached anymore. People didn’t appreciate this


So finally I went for a solution which isn’t in the note, but spread around the internet:

Download & Copy the jvm.dll from
Your (directory)
C:\Program Files\Oracle\JInitiator 1.3.1.22\bin\hotspot

Or if you installed jre version then just copy jvm.dll file from 
Your (directory)
C:\Program Files\Java\jre1.6.0_07\bin\client (jre1.4.2 does work as well..)
to (directory)
C:\Program Files\Oracle\JInitiator 1.3.1.22\bin\hotspot

Thursday, 23 November 2017

Internet Explorer crash with Forms 10g, How to Replace Jinitiator with JRE


Oracle Jinitiator is no longer compatible with oracle forms services. By default, Oracle Forms services 10g uses Jinitiator 1.3.1.22 to run Forms applications. Jinitiator was compatible with Internet Explorer 6 and Firefox version 2.0. But latest internet explorer like IE 8 and 9 crash with Jinitiator. Similar behavior is seen with Firfox version 3.0 and later.
To resolve this problem, you must configure JRE to work with forms services 10g. It is really easy and requires only very little work. Forms services 10g are by default configured to run with JRE 1.4.2_06. To get this working, locate following lines in your FORMSWEB.CFG file,
# System parameter: default base HTML file
baseHTML=base.htm
# System parameter: base HTML file for use with JInitiator client
baseHTMLjinitiator=basejini.htm
# System parameter: base HTML file for use with Sun’s Java Plug-In
baseHTMLjpi=basejpi.htm
Make changes as shown in bold face below.
# System parameter: default base HTML file
baseHTML=basejpi.htm
# System parameter: base HTML file for use with JInitiator client
baseHTMLjinitiator=basejpi.htm
# System parameter: base HTML file for use with Sun’s Java Plug-In
baseHTMLjpi=basejpi.htm
Make sue that following parmaments in FORMSWEB.CFG are as mentioned below.
jpi_download_page=http://java.sun.com/products/archive/j2se/1.4.2_06/index.html
jpi_classid=clsid:CAFEEFAC-0014-0002-0006-ABCDEFFEDCBA
jpi_codebase=http://java.sun.com/products/plugin/autodl/jinstall-1_4_2-windows-i586.cab#Version=1,4,2,06
jpi_mimetype=application/x-java-applet;jpi-version=1.4.2_06
Now install J2RE version 1.4.2_06 from following URL,

How to Enable Forms 6i short keys in Forms 10g / 11g

Shortcuts in Forms 10g and 11g are different from Forms 6i keys. For example, Forms 6i uses F10 as short key to save records while in Forms 10g and 11g, CTRL+S is default short key to save or commit changes. If you have migrated an app from older version then probably you would be looking some way to retain key shortcuts. This can be done by using a resource file named “fmrpcweb.res”. By default, Forms 10g and 11g use “frmweb.res”to manage key mapping. Do following steps to enable older short keys.
Create a new configuration in Formsweb.cfg and use “otherparams” parameter to supply resource file for key mapping as under,

[myConfiguration]
otherparams= term=/home/oracle/1010202Mid/forms/admin/resource/US/fmrpcweb.res
Now you should use myConfiguration while calling forms as under,
http://servername:port/forms/frmservlet?config=myConfiguration
The “fmrpcweb.res” resource file is located in Forms directory under middleWare home. in Forms 11g, this file can be located at following location
$Instance_home/config/FormsComponent/forms/admin/resource/US
In Forms 10g, fmrpcweb.res can be located in \forms directory
If you want to customize one ore more specific keys, visit following link to see how this can be done.

Hide username and password while calling oracle Reports. USING CGICMD.DAT file

If you have not configured reports with Oracle Single Sign-on, Oracle report server explicitly requires username and password when report is called using Web.Show_document(). Username and password is required in report calling URL, for example following method calls a reports using Web.Show_Documnet().
Web.Show_Document('http://domainname.com:8090/reports/rwservlet?userid=username/password@db& server=ReportsServer_1&desformat=PDF&destype=cache&report=report.rdf&paramform=yes','_blank');
In above call username and password are visible in URL, causing security problem. Oracle has provieded serveral methods to resolve this problem, one of these solution is to define keymapping in CGICMD.DAT file. In Reports services 11g this file is located at following location
$DOMAIN_HOME/servers/WLS_REPORTS/stage/reports/reports/configuration/cgicmd.dat
In Oracle Reports services 10g this file can be located in reportsconfdirectory.
To define a key mapping, append follwing line at the end of the file
userlogin: userid=username/password@db %*
Restart reports server/Managed server, now you can call your report using following URL
Web.Show_Document('http://domainname.com:8090/reports/rwservlet?userlogin&server=ReportsServer_1&desformat=PDF&destype=cache&report=report.rdf&paramform=yes','_blank');
You can define key mapping for as many parameter as you need using following syntax,
userlogin: userid=username/password@db server=ReportsServer_1 desformat=PDF destype=cache %*
If reports have been configured with SSO, simply pass ssoconn=configparameter in reports calling URL, here config is the Resource Access Descriptor defined in OID. This parameter will automatically get login information from Oracle Internet Directory.

Thursday, 9 November 2017

What does ERP stand for and what does it do for businesses today?


ERP stands for Enterprise Resource Planning, is a large-scale software program designed for modern businesses, both large and small. A simple definition is that ERP systems aid the flow of internal business processes and allow for communication between a business’s departments and its internal functions and data. 

Using software-generated automated reports, enterprise resource planning systems are able to give companies an immediate picture of its real-time operations: production, inventory and order processing. ERP software tracks a business’s resources (raw materials, cash, employees), overhead and commitments (employee payroll, purchase orders and customer orders) for individual departments and for the company as a whole. Most ERP systems are modular. 

Workers can access only the modules they need in order to complete their duties while higher-ups can access all modules in order to both create and review data and reports. By keeping work zones modular, the security of the company is better protected as a whole.

 The more modules offered by an ERP system, the more specific reports and projects could get if necessary; one potential drawback to a company having many modules is that each module represents an additional cost for the purchasing company. 

ERP systems are a powerful way for companies to manage costs, service and production.

What does Entity-Relationship Diagram (ERD) mean?

Entity-Relationship Diagram (ERD):

An entity-relationship diagram (ERD) is a data modeling technique that graphically illustrates an information system’s entities and the relationships between those entities. An ERD is a conceptual and representational model of data used to represent the entity framework infrastructure.
The elements of an ERD are:
  • Entities
  • Relationships
  • Attributes
Steps involved in creating an ERD include:
  1. Identifying and defining the entities
  2. Determining all interactions between the entities
  3. Analyzing the nature of interactions/determining the cardinality of the relationships
  4. Creating the ERD

Techopedia explains Entity-Relationship Diagram (ERD)

An entity-relationship diagram (ERD) is crucial to creating a good database design. It is used as a high-level logical data model, which is useful in developing a conceptual design for databases.
An entity is a real-world item or concept that exists on its own. Entities are equivalent to database tables in a relational database, with each row of the table representing an instance of that entity.
An attribute of an entity is a particular property that describes the entity. A relationship is the association that describes the interaction between entities. Cardinality, in the context of ERD, is the number of instances of one entity that can, or must, be associated with each instance of another entity. In general, there may be one-to-one, one-to-many, or many-to-many relationships.
For example, let us consider two real-world entities, an employee and his department. An employee has attributes such as an employee number, name, department number, etc. Similarly, department number and name can be defined as attributes of a department. A department can interact with many employees, but an employee can belong to only one department, hence there can be a one-to-many relationship, defined between department and employee.
In the actual database, the employee table will have department number as a foreign key, referencing from department table, to enforce the relationship.

Steps to change IP address of Oracle Application Server (J2EE and WebCache)

Below are the steps for changing IP Address And/or Hostname by using chgiphost.sh command.


Located at $ORACLE_HOME/chgip/scripts.


STEP 1] Stop all J2EE instance services (Mid Tier)


A) Go To $MID_HOME/opmn/bin
Give following command to stop opmn processes.
. /opmnctl stopall


B) Go to $MID_HOME /bin
Give following command to stop em console.
. /emctl stop iasconsole


STEP 2] Take Entire application server backup.


STEP 3] Note down the old IP- address and old hostname (if hostname is going to change) of the server.


STEP 4] change the IP/Hostname of the server, restart the server if required.


STEP 5] Check that the IP-Address and hostname in /etc/hosts is correct


STEP 6] Check that you are able to ping from other machine to that server.


STEP 7] Go to $MID_HOME /chgip/scripts


STEP 8] Run sh chgiphost.sh -mid


STEP 9] After excuting above command we have to specify NEW and OLD IP Or/And Hostname


When prompted for destination IP/Hostname enter new IP/Hostname.
When Prompted for source IP/Hostname enter enter Old IP/Hostname
When prompted for OIDAdmin password enter orcladmin password.


STEP 10] Check for any errors in $MID_HOME /chgip/log/


STEP 11] Start j2ee services using following method.


A) Go to $MID_HOME /opmn/bin
. /opmnctl startall


B) Go to $MID_HOME /bin
. /emctl start iasconsole


STEP 12] Check all services are started properly.


I hope it will help you in changing Oracle Application Server IP/ Hostname.