Solution : https://service.sap.com/sap/support/notes/319211 (SAP Service marketplace login required)
Key words : 
directory /general/r3server/patches/rel46d/unix/common, additional key words chdbpass sqldba, /oracle/sid/816_32/bin/sqldba, solution setting/changing passwords, /oracle/sid/816_32, database users system, effects menu options, symptom oracle version 8, directory $oracle_home/sapreorg, program sqldba
Related Notes : 
       
| 491598 | Additional info on upgrading to SAP Web AS 6.20 ORACLE 8.1.x | 
| 401721 | on upgrading to SAPWeb AS 6.10 ORACLE | 
| 361641 | Creating OPS$ users on UNIX | 
| 303461 | Additions to Upgrade to Basis 4.6D Oracle | 
| 201874 | Additions for upgrade to 4.6C/4.6C SR1/4.6C SR2 Oracle |