diff was java add in and stand alone java instance

[Former Member]

Hi Guys ,

What is the diff between was java add in and stand alone java instance ?

Thanks

Sonam

[Former Member · Accepted solution]

Hai,

JAVA Add-on:

After Installing ABAP Central Instance, DB Instance and additional Dialog Instance, we create clients in the fresh Installation. Next we install JAVA add-on to the Central Instance to the newly created client, here it will install Central Service (CS) instance (MS, ES) and also will install Dispatcher, Server process and SDM.

Install Add-on Java to other ABAP Dialog Instance, It will install only Dispatcher and Server process also note that only one Server process (server0) will be created when the instance is initially installed.

JAVA Stand alone:

With AS Java an SCS instance is installed by default. Here only JAVA stack is installed no ABAP Instance.

Regards,

Yoganand.V

[Former Member · Accepted solution]

Dear Sir,

What is SCS instance ?

How the Java add in and Stand Alone java is diffrent . Is it just same only ABAP instance is included in java add in ?

what is the use of java add in and stand alone java ?

Thanks for your support !

regds

Sonam

[Former Member · Accepted solution]

Hai,

SCS is nothing but the SAP Central Services, it is AS Java instance of an SAP system containing the enqueue server and the message server.

JAVA Addin is inserted in exsisting ABAP only instance to have JAVA functionality. JAVA instance is assigned to an ABAP instance. The Internet Communication Manager (ICM) of the ABAP instance starts and stops the associated Java instance as required.

Netweaver JAVA (Stand alone) vs JAVA Addin:

Netweaver JAVA Addin installation is a dual installation that consists of Java and ABAP stack. Addin is required when you are implementing SAP XI (Exchange Infrastructure). Stand alone JAVA is required when you implement SAP EP (Enterprise Portal). It is generally not recommended to use dual installation for EP because this will expose the ABAP layer to the public Internet. So the ABAP stack is often used to host SAP ERP ECC (Enterprise Central Component), SAP CRM, SAP SCM, etc.,

Since the information hosted on ABAP stack is more sensitive in nature you are recommended to install Portal on the Netweaver AS Java server (Stand alone JAVA server).

By doing this you will be able to fully utilize the system resources for the portal and ensure good performance.

Regards,

Yoganand.V

[Former Member]

java add in is a installation where JAVA is installed after ABAP stack is installed, stand alone JAVA instance is that no ABAP stack exist for example SAP Portal runs totally on JAVA stack.