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Lost SYS password Tips

Oracle Error Tips by Burleson Consulting


Many times, users may find themselves with a lost SYS password when using Oracle.  Though it may appear difficult, there are many solutions to this issue.


For example, on Oracle DBA Forums, a user finds themselves troubled by a lost SYS password, and was given these solutions by various repliers:

  • You can connect using the alter user privilege under any user, and change the password since it has been lost.

  • If you have Oracle passwords as "identified externally", you can connect without a password and re-set your SYS password:

  • Make sure that the database and listener services are started. Then open a command prompt and log in as / as sysdba. Then change the sys password.

    c:> sqlplus /nolog
    SQL> connect / as sysdba
    SQL> alter user sys identified by ,new password>;

    If you get asked for a password when you log in as / you need to create or recreate the password file using orapw. Check the $ORACLE_HOME/database directory for a file called orapw<SID>. That is the password file for the database. Create (or recreate) it using:

    c:\> orawpd file=$ORACLE_HOME/database/orapwd<SID> password=<password> entries=5

    Notice it is from the dos prompt

  • You may also want to try the following when you are troubled by a lost SYS password:

  • 1. login oracle user

    2. cd $ORACLE_HOME/network/admin

    3. ed(vi) file sqlnet.ora

    4. Remark by # at begining of line


    5. sqlplus /nolog or (svrmgrl) command

    6. connect sys as sysdba, or connect internal
    (not need input the password).



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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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