PT 8.50 and Oracle client (32 or 64 bit)
going from PT8.49 to PT8.50, windows server 2003 to 2008, Aix 5.3 to 6.1 and Oracle 10g to 11g.
When we had Oracle 10g client 64 bit installed on windows server 2008 R1 (64 bit), when accessing app designer it was giving an error "Missing or invalid version of SQL library PSORA" I checked MOS and found this document 1055517.1, where it says "PeopleTools 8.5x has been certified to run on 64bit Windows platforms but the program itself is 32bit. The Oracle client lib 'PSORA' for instance, must be the 32bit version rather than the 64bit version ". we installed 32 bit client and the error went away.