SAP BASIS Books Upgrading SAP: The Comprehensive GuideSAP Database Administration with IBM DB2SAP Administration – Practical GuideThe Complete Guide to SAP NetWeaver PortalSAP Basis Administration Handbook, NetWeaver EditionSAP Certified Technology Associate – System Administration with SAP NetWeaver 7.0105 SAP Basis (System Administration) Interview Questions with Answers and ExplanationsBasis Administration for SAPSAP HANA AdministrationSAP Basis Certification Questions: SAP Basis Interview Questions, Answers, and ExplanationsSAP NetWeaver AS ABAP – System AdministrationSAP Performance Optimization Guide: Analyzing and Tuning SAP Systems