Is SAP PO 7.4 dual stack installation??

HI experts,
Could anyone let me know if SAP PO 7.4 is a dual stack installation or can we go for single stack as well.
As PI 7.4 is based on HANA , so while working on it shall we use ICO or old classic configuration. Shall we go for java based adapters(eg IDOC_AAE/HTTP_AAE) or old abap based adapter..
Thanks,

To add few cents - May be your basis guys just read the title
Support for Dual-Stack discontinued in SAP NetWeaver 7.4 in general with exceptions
SAP NetWeaver 7.4 is positioned as the follow-up on-premise release for SAP NetWeaver 7.31.
SAP NetWeaver is among other things optimized for SAP HANA as the foundation for the SAP Business
Suite on SAP HANA project. This means that dual-stack deployments and implementations are not
supported any longer. The only exception to this rule is SAP NetWeaver Process Integration on a traditional
database system, which still requires a dual-stack implementation. However, note that a single-stack SAP
NetWeaver Process Integration Java exists that offers 95% of the features of classical dual-stack
implementations. Therefore, customers should investigate whether an existing SA
Reference : http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60bf3650-e219-3010-ef93-d11928aa8f8a?QuickLink=index&…

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I am a business partner who specializes in infrastructure consulting for SAP solutions. The SAP Consultants I am working with recently have been recommending that customers install single stack systems. I would like to know why? Are there problems with dual stack systems?
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we plan to upgrade Enterprise Dual stack(ABAP+JAVA) System to EHP4 system.
In EHP4 upgrade document it says, No dual stack supported for EHP4 installation..was that mean
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hi jaichan,
yes, you are right ..For new installation of SAP ERP to EHP4 level, you cannot install dual stack system..i have read in sap note 855534..please find below the extract from this note:
As of SAP Business Suite 7, you can no longer install Dual Stack Application Systems (ABAP+Java).
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1. Install a separate ABAP-based SAP Business Suite system.
2. Install the required Java components in a separate Java-based SAP system.
3. Configure the connection of the Java-based SAP system to the ABAP-based SAP Business Suite back-end system.
The SAP Business Suite 7 comprises: EHP4 for SAP ERP 6.0, SAP CRM 7.0, SAP SCM 7.0, SAP PLM 7.0, SAP SRM 7.0
As of now you will find the latest recommendations at a central place in SDN:
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