ORA-28150 proxy not authorized to connect as client

ORA-28150 is an error message that occurs in Oracle databases. This error message indicates that a proxy user is attempting to connect to the database as a client, but the proxy user is not authorized to do so.

In other words, the user who is attempting to access the database is not authorized to access it in the manner that they are attempting to. This error message is typically associated with issues related to security and authentication.

To resolve this error message, the user needs to be granted the appropriate permissions or privileges to access the database. The database administrator can grant these permissions or privileges to the user by using Oracle's security and authentication features.

It is important to note that granting too many permissions or privileges to a user can also pose a risk to the security of the database. Therefore, it is important to carefully consider the permissions and privileges that are granted to users, and to limit access only to those who need it