Authentication

Do you come here often? 12.2 change in behavior for DBA_USERS.LAST_LOGIN with Proxy Authentication

The behavior of the LAST_LOGIN field on DBA_USERS has changed with respect to proxy authentication (for the better I think). Proxy authentication is an feature of the Oracle Database that effective allows you to be connected as one user (the client user to use Oracle’s terminology), but using the credentials of another user (the proxy …

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Problems with Kerberos Credentials to 12.2 Databases in Enterprise Manger

Just a quick note in case anyone else hits this issue. We use make extensive use of Kerberos to give us Windows single-sign on. For database connections via Enterprise Manger we use “Database Kerberos Credentials” credential type and have no problems connecting to 11.2 and 12.1 databases (apart from slight pain points that it’s not …

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Windows Single Sign-On to an Oracle database using Kerberos

I’ve recently been investigating Kerberos authentication as a means for providing Windows Single Sign On from Windows clients into an Oracle database servers. Maybe you are wondering one of the following questions. What on earth does Kerberos authentication have to do with Microsoft Windows? Don’t you have to pay extra money to Oracle for such …

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