Small knowledge, big challenge! This article is participating in the creation activity of “Essential Tips for Programmers”.

When Oracle database is created, there are two default administrators: SYS/SYSTEM!

The password of the administrator user is usually in the hands of the person who manages the database. It is configured when the database is created. If the SYS/SYSTEM password is lost, don’t be afraid to change it.

Log in to the database server host, this is very important, it must be the database server host!

Log in to the SQLplus using the following command:

su - oracle
sqlplus / as sysdba
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Run the following command to change the password:

alter user sys identified by oracle;
alter user system identified by oracle;
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Set the password of user sys/system to Oracle!

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