Every IS installation is based on DS installation. They(DS and IS) have to be upgraded at the same time to 4.3. Upgrade BIP/IPS, then DS, then IS.Not possible to only upgrade IS to 4.3. Not supported.
Hi Pravi,For all your questions, have you checked this link before?https://help.sap.com/viewer/p/SAP_CLOUD_PLATFORM_INTEGRATION_FOR_DATA_SERVICESAnd check Agent Guide and Product Availibilty MatrixAny OS type mentioned in PAM document is recommended....
Glad to know "$V_CURRENT_UTC_DATE_TIME = local_to_utc(sysdate(), 'UTC-04:00');" can return current date time in UTC+0 due to job server located in time zone UTC-4:00. For day light saving, I don't see a better way other than manually change it to UTC...