Linux Modify Oracle User

After SSH login under Linux:

Su-oracle;

Sqlplus/nolog;

conn system/password; or Connect/as sysdba;

Alter user username identified by password;
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1. Connect to the database using Oracle User Login
[Email protected] ~]$ Sqlplus/nolog

Sql*plus:release 10.2.0.1.0-production on Thu Feb 26 12:06:29 2009

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Sql> Conn/as SYSDBA
Connected.

View User
Sql> select Username,password from Dba_users;
Modify user password format ALTER user username identified by new password;
sql> alter user system identified by manager;

User altered.

Check again, compare the found password has been replaced
Sql> select Username,password from Dba_users;
Sql>
You can now do this with this password link.
Sql> Connect System/manager

is connected.

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Another way to modify a value

sql> alter user system identified by values ' 2D594E86F93B17A1 ';

The user has changed.

I'm trying this code.

Sql> Connect system/oracle

is connected.

This code is not going to work.

Sql> Connect System/manager

ERROR:

Ora-01017:invalid Username/password; Logon denied

Linux Modify Oracle User