By default the system password will be manager.
[oracle1@subbu2 ~]$ sqlplus system/manager
SQL*Plus: Release 11.2.0.1.0 Production on Fri Sep 23 16:44:41 2016
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> show user;
USER is "SYSTEM" Here i connected as system user. now i am changing this password to system.
[oracle1@subbu2 ~]$ sqlplus system/manager
SQL*Plus: Release 11.2.0.1.0 Production on Fri Sep 23 16:44:41 2016
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> show user;
USER is "SYSTEM"
SQL> conn / as sysdba
Connected.
SQL> show user;
USER is "SYS"
SQL> alter user system identified by system;
User altered.
SQL> commit;
Commit complete.
SQL> conn system/manager
ERROR:
ORA-01017: invalid username/password; logon denied
Warning: You are no longer connected to ORACLE.
SQL> conn system/system;
Connected.
SQL> show user;
USER is "SYSTEM"
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