Oracle 11GR2 Database Usage

1 very strange, not very understanding of the principle

One, Oracle 12c create user is "ora-65096:invalid common user or role name" error-Calvinr

Http://www.tuicool.com/articles/V3UJZfA

Second, Error "Ora-28040:no matching authentication protocol" when Using sqlnet. Allowed_logon_version (Doc

http://blog.csdn.net/wuweilong/article/details/15647075

Workaround:

1. sqlnet.ora file on the server machine:
From
Sqlnet. allowed_logon_version=10

To:
Sqlnet. Allowed_logon_version=8

2. When using the Oracle thin connection, the user name should be written as "C # #user"

Third, the program start error: Ora-12505;pl/sql but can login solution

Http://www.2cto.com/database/201203/124950.html

Iii. under the CDB container:

You need to add "c##" or "c##" before using user

For example: Conn C # #test/test;

Iv. about how instances are created (very good)

Http://database.51cto.com/art/201004/195492.htm

Oracle 11GR2 Database Usage