Setting system properties: difference between "-D" and "System.setProperty"

Hi.
I have a program that relies on the jogl library to display graphics. Internally, jogl loads a native library from disk, with a System.loadLibrary() call. In turn, loadLibrary searches the paths in the system property "java.library.path" to find the jogl DLL/SO files. So, it is my responsibility to ensure that the "java.library.path" property is correctly set.
There are two ways that I know of to set system properties: as an argument to the JRE via the "-D" option and from within an application with the System.setProperty method. However, I have noticed that only the former gives the desired behavior. That is, if I do:
java -Djava.library.path=lib MyProgram{code}
the code in jogl.jar is able to successfully find and load the native libraries in lib/, but if I do:
{code:java}System.setProperty("java.library.path", "lib");{code}
at the beginning of main in my program (before the classes requiring jogl are loaded), I end up with an UnsatisfiedLinkError.
Why does this happen? Why do the 2 methods produce different results? Is specifying native library paths on the command line the only way to ensure that they are found?

See the [System Properties Tutorial|http://java.sun.com/docs/books/tutorial/essential/environment/sysprop.html] section on "Writing System Properties" which says:
Warning: Changing system properties is potentially dangerous and should be done with discretion. Many system properties are not reread after start-up and are there for informational purposes. Changing some properties may have unexpected side-effects.
Also see the [setting java.library.path property in java code|http://forums.sun.com/thread.jspa?threadID=627890] thread in the JNI forum.

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Differences Between Object And System Privileges

Hi,
Whats the difference between object and system privileges in oracle?
Cheers
Paul

System Privileges
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Schema Object Privileges
A schema object privilege is a privilege or right to perform a particular action on a specific schema object:
For example, the privilege to delete rows from the departments table is an object privilege.
Some schema objects, such as clusters, indexes, triggers, and database links, do not have associated object privileges. Their use is controlled with system privileges. For example, to alter a cluster, a user must own the cluster or have the ALTER ANY CLUSTER system privilege.
A schema object and its synonym are equivalent with respect to privileges. That is, the object privileges granted for a table, view, sequence, procedure, function, or package apply whether referencing the base object by name or using a synonym.
Granting object privileges on a table, view, sequence, procedure, function, or package to a synonym for the object has the same effect as if no synonym were used. When a synonym is dropped, all grants for the underlying schema object remain in effect, even if the privileges were granted by specifying the dropped synonym.

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Hi,
Well, one of my colleagues have asked me the difference between SYS and SYSTEM user .. Normally these are the users which will be under the monitoring of the DBA .. So, how could I know the difference between these two users ..
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SYS is the owner of the database and the owner of the data dictionary.
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Dear Experts,
Whats the difference between Open and In process system status? In help.sap.com it: There are four system statuses that represent the life cycle of the business transaction:
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In process: administrator is clearing up questions
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However, in other unknown situations the status system is changed to in Process.
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Thanks in advance,
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Hi,
These four system statuses that represent the life cycle of the business transaction:
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·        In process: administrator is clearing up questions
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·        Completed: All actions directly linked to contract are completed
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Please notice the configuration settings in the following navigation path:
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Hope I convinced.
Best Regards,
Johnny.
Reward if it helps.

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I would like to know the difference between the Communication User and System User.
Definition wise, Yes, I know what they are for?
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It's okay in my books for people to experience the internet as it is and not the way it was individually intended
SU01Solution already solved the problem actually, but there are some very fine peripheral differences still between the user types.
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Hi Gurus,
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Actually we have one Raw Material which contains a "Moisture Contain" Half it own weight.
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HI
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Check with your MM consultant.
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SAP Kernel release - Difference between SM51 and System- Status ?

Dear SDN colleagues,
I am a ABAP developer, and have been told by our Basis department that our SAP Kernel is 640.
When I check the following, I get different values:
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Best regards,
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Hello Jodie,
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Solution
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Ruchit.

Difference between standard and actual activity rates

Dear All,
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Dear AP,
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Time difference between the Identity system and Access System: OAM

I was installing OAM. Performed the below steps.
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Windows2008 - 64bit
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Try this::
Check Time Difference Between Identity and Access Manager Systems
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Then start the Identity Manager Web Server. Start a new browser session and see if you get the same error.

Can you tell me some differences between R2 and R3 systems?

Hi,
Can you tell me some differences between R2 and R3 systems?
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Thanks,
Venkatesh.R.

SAP R/3 is
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3 tier
Presentation
Application
Database
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Best practice process design
Ability to configure to
Industry sector
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Client server
Uses underlying relational databases
Oracle
SQL server
Ingress
Sybase
Its graphical user interface
Sap GUI
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Saurabh Shukla

Difference between the Logical System n Client

Hi Guys,
i need a some information plz help me.
what r the differences between the logical system n the client.
plz give me the detail explanation
appreciated with points
regards
kk

Hi there,
'logical system' is used to identify an individual client in a system, for ALE
communication between SAP systems. That's why you see a field for 'logical
system' in the client master data in SCC4 (table T000).
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Hope it helps
Cheers
Deepanshu

Difference between BAG and SET

Difference between BAG and SET....
SET--->is collection of objects
|....>contains no order
|....>allows no duplicate
BAG---->???????
Can any one explain this....
Thank you...

[http://en.wikipedia.org/wiki/Multiset]

Difference between BAPI and RFC?

Difference between BAPI and RFC?
also where to use BAPI and where to use RFC?

Hi,
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
The following standardized BAPIs are provided:
Reading instances of SAP business objects
GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.
The BAPI GetList() is a class method.
GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type
The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.
Create( ) and CreateFromData! ( )
The BAPIs Create() and CreateFromData() create an instance of an SAP business object type, for example, a purchase order. These BAPIs are class methods.
Change( )
The BAPI Change() changes an existing instance of an SAP business object type, for example, a purchase order. The BAPI Change () is an instance method.
Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.
The BAPI Undelete() removes a deletion flag. These BAPIs are instance methods.
Cancel ( ) Unlike the BAPI Delete(), the BAPI Cancel() cancels an instance of a business object type. The instance to be cancelled remains in the database and an additional instance is created and this is the one that is actually canceled. The Cancel() BAPI is an instance method.
Add<subobject> ( ) and Remove<subobject> ( ) The BAPI Add<subobject> adds a subobject to an existing object inst! ance and the BAPI and Remove<subobject> removes a subobject from an object instance. These BAPIs are instance methods.
Regards,
Prakash

Difference Between BAPI And RFC in ABAP

Hi,
i want to know difference between BAPI and RFC in SAP,
can we call SAP GUI screen from NON SAP System Using BAPI.
Reg,
Hariharan

Hi Ravishankar,
The difference is not importat while you understand the concept.
I think, RFC is the protocol for calling functions from external systems in R/3.
I understand like BAPI a series of complet functions that SAP offers you for use and model a business use.
But if I need program a function that can be called for external system i would call it RFC_NAME, because is a unique function that makes a single task.
In other words, the difference i think is about work idea more than another thing.
RFC
A remote function call is a call to a function module running in a system different from the caller's. The remote function can also be called from within the same system (as a remote call).
RFC consists of two interfaces : A calling interface for ABAP Programs and a calling interface for Non-SAP programs.
The RFC Interface takes care of :-
- Converting all parameter data to the representation needed in the remote system
Calling the communication routines needed to talk to the remote system.
Handling communications errors, and notifying the caller, if desired ( using EXCEPTIONS paramater of the CALL FUNCTION).
BAPI
BAPIs are standardized programming interfaces (methods) enabling external applications to access business processes and data in the R/3 System.
BAPIs provide stable and standardized methods to achieve seamless integration between the R/3 System and external applications, legacy systems and add-ons.
BAPIs are defined in the BOR(Business object repository) as methods of SAP business object types that carry out specific business functions.
BAPIs are implemented as RFC-enabled function modules and are created in the Function Builder of the ABAP Workbench.
The most critical difference btwn BAPI and FM is that BAPI can be wrapped in Business objects whereas RFC cant.
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
The following standardized BAPIs are provided:
Reading instances of SAP business objects
GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.
The BAPI GetList() is a class method.
GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type
The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.
Create( ) and CreateFromData! ( )
The BAPIs Create() and CreateFromData() create an instance of an SAP business object type, for example, a purchase order. These BAPIs are class methods.
Change( )
The BAPI Change() changes an existing instance of an SAP business object type, for example, a purchase order. The BAPI Change () is an instance method.
Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.
The BAPI Undelete() removes a deletion flag. These BAPIs are instance methods.
Cancel ( ) Unlike the BAPI Delete(), the BAPI Cancel() cancels an instance of a business object type. The instance to be cancelled remains in the database and an additional instance is created and this is the one that is actually canceled. The Cancel() BAPI is an instance method.
Add<subobject> ( ) and Remove<subobject> ( ) The BAPI Add<subobject> adds a subobject to an existing object inst! ance and the BAPI and Remove<subobject> removes a subobject from an object instance. These BAPIs are instance methods.
Check these Links out
http://searchsap.techtarget.com/ateQuestionNResponse/0,289625,sid21_cid558752_tax293481,00.html
http://www.sap-img.com/abap/interview-question-on-bapi-rfc-abap-objects-tables.htm
http://www.sap-img.com/fu033.htm
http://www.sap-img.com/abap/ale-bapi.htm
Refer following SDN threads:
Diff. Between BAPI and RFC
Re: BAPI and RFC
Hope this resolves your query.
Reward all the helpful answers.
Regards

Difference between BAPI and IDocs

hello all
what is difference between BAPI and IDocs

Hi,
BAPI
One of the big plusses for BAPIs is that the interface and function are not supposed to change. This is a big plus when you do upgrades or hot packs because the transaction can change (format, required inputs etc) which means you then need to update the call transaction.
Some of the BAPIs are better documented and easier to use than others. You usually need to perform the BAPI that actually does the COMMIT after you call your BAPI.
The Program coding for calling a BAPI is usually cleaner than setting up the screen flow etc for the Call Transaction.
You don't need to worry about special data circumstances interrupting the normal data flow of the screens and causing errors because of that.
BAPIs probably have better performance since they don't do the screen flow processing.
In general if the BAPI exists for the transaction you want to perform and you can figure out how to use it the BAPI is probably the best way to go.
BAPIs are a subset of the RFC-enabled function modules, especially designed as Application Programming Interface (API) to the SAP business object, or in other words: are function modules officially released by SAP to be called from external programs.
IDOC
IDocs are text encoded documents with a rigid structure that are used to exchange data between R/3 and a foreign system. Instead of calling a program in the destination system directly, the data is first packed into an IDoc and then sent to the receiving system, where it is analyzed and properly processed. Therefore an IDoc data exchange is always an
asynchronous process. The significant difference between simple RFC-calls and IDoc data exchange is the fact, that every action performed on IDocs are protocolled by R/3 and IDocs can be reprocessed if an error occurred in one of the message steps.
While IDocs have to be understood as a data exchange protocol, EDI and ALE are typical use cases for IDocs. R/3 uses IDocs for both EDI and ALE to deliver data to the receiving system. ALE is basically the scheduling mechanism that defines when and between which partners and what kind of data will be exchanged on a regular or event triggered basis. Such a set-up is called an ALE-scenario.
The philosophical difference between EDI and ALE can be pinned as follows: If we send data to an external partner, we generally speak of EDI, while ALE is a mechanism to reliable replicate data between trusting systems to store a redundant copy of the IDoc data. The difference is made clear, when we think of a purchase order that is sent as an IDoc. If we send the purchase order to a supplier then the supplier will store the purchase order as a sales order. However, if we send the purchase order via ALE to another R/3 system, then the receiving system will store the purchase order also as a purchase order.
Regards,
Bhaskar

Setting system properties: difference between "-D" and "System.setProperty"

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