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[Source] Any Oracle user and password can log in with sysdba

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Posted on 8/14/2016 10:51:07 PM | | |


1. Oracle uses operating system authentication after installation by default. Because you are logged in and operated as administrator, you can do anything.  You can change the password file to authenticate. In sqlnet.ora, change SQLNET.AUTHENTICATION_SERVICES=(NTS) to NONE, so that you need to use the password file authentication locally.
2. Windows has the concept of service. In other words, no matter what you do, the premise is that there must be a service before you can start doing other operations. It feels like this explanation is the same as not explaining it. Ha ha



Solution:

In fact, this is a problem with the authentication method of Oracle database
sqlnet.ora file

SQLNET. AUTHENTICATION_SERVICES= (NTS)

Change

SQLNET. AUTHENTICATION_SERVICES= (NONE).

That is, the system authentication method cannot be used.


File path: C:\oracle\xxx\product\11.2.0\dbhome_1\NETWORK\ADMIN




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