Solution : https://service.sap.com/sap/support/notes/140071 (SAP Service marketplace login required)
Summary : Key words : Related Notes :
SAP Note discusses an issue during the R/3 System upgrade phase identified as PCON_
symptom r3up reports terminations, additional key words upgrade, upgrade phase pcon_<rel>, missing database resources, terminated background jobs, pcon_<rel>, conversion terminated, release upgrades, inconsistent buffers, solution restart
435140 Additional information on upgrading to Basis 4.6D (APO 3.1x 420371 Add. info on upgrading to Basis 4.6C SR2 (NDI upgrade) 390062 Additional information about upgrading to 4.6C SR2 335029 Additions to the upgrade to Basis 4.6D (NDI Upgrade) 329622 Additions: Upgrading to Basis 4.6C SR1 (NDI upgrade) 327285 Additions to upgrade to 4.6C SR1 304597 Additions to upgrade to Release 4.6C FCS 192949 Additional info for upgrade to 4.6C 179373 Additional info for upgrade to Rel.4.6B 153225 Load error char. conflict incorrect message C1813 151833 Additional Info: Upgrading to FCS 4.5B 147337 Additional info for upgrade to Release 4.0B SR 117668 Additional info: Upgrading to 4.5B 116251 Additions upgrade to Basis 4.5A (comp.system)