re: HP Without Itanium: A Three-Pronged Strategy
IBM DB2 with the OCM technology is definitely a viable alternative to Oracle. The SAP install base should be considering DB2 for the work IBM and SAP have done with compression, SAP Basis integration, integrated triggers, etc. The OCM functionality eliminates most of the migration work. Having written that, it isn't going to stop Itanium from going down. If people are migrating DBs, which is much more difficult than OS platform, they will put it on a platform with some legs, RHEL - x86 or AIX - Power. Either of those chips are going to smoke Itanium on any OLTP workload anyway. If you have done all of that DB migration work, migrating the OS platform in conjunction with that project is relatively trivial.
EnterpriseDB/Postgre will work for custom dev, but no one has the option of using it for the large commercial applications that are generally running on Itanium (e.g. Oracle EBS, PeopleSoft, SAP, etc), because it isn't supported.