Why do we need a Java stack in BW on HANA?

A Java instance is still required to run BEx Web and BICS. The Java component BW-IP modeler is redeveloped for BW 7.30 in ABAP HTTP, so the Java Server will not be used anymore for the BW-IP infrastructure in the future after BW 7.30.

In many cases the in-built Java engine of the BI 4.0 FP3 platform will be sufficient to support BEx Web / BICS. However, there are some limitations:
- Information Broadcasting to Portal/KM not supported
- Document Integration with KM not supported
- Report-to-report interface (RRI) not supported
- Portal themes not supported
- BEx Web Templates from only one BW Master System
- SSO not yet supported
- Only Export Library supported (no ADS)

Courtesy Eric SAP

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