**远程登录：** ``` [oracle@localhost ~]$ sqlplus sys/oracle@orcl as sysdba SQL*Plus: Release 19.0.0.0.0 - Production on Thu Jun 17 19:28:24 2021 Version 19.11.0.0.0 Copyright (c) 1982, 2020, Oracle. All rights reserved. ERROR: ORA-01017: invalid username/password; logon denied ``` **检查参数** ``` SQL> show parameter remote_login_passwordfile NAME TYPE VALUE ------------------------------------ --------------------------------- ------------------------------ remote_login_passwordfile string EXCLUSIVE SQL> select * from v$pwfile_users; no rows selected ``` rman恢复，没有复制密码文件，重建密码文件 ``` $ cd $ORACLE_HOME/dbs $ orapwd file=orapwORCL password=ORA#19recv entries=30 force=y ```