Recovering lost SYS password
Recovering from lost sys password using OS authentication on Unix. #1. make sure that the OS user that is logged on is member of the dba group. If the dba group is not known, check the file: $ORACLE_HOME/rdbms/lib/config.c (or config.s) #2. make sure that the sqlnet.ora file does not contain the: sqlnet.authentication_services parameter. If this…