Can't open View->DBA Menu in SQL Developer (Oracle 12C Standard Edition Installed)

Question

I have installed Oracle 12C Standard Edition. Everything works fine there. I have also connected the Oracle SQL Developer Client 4.0. From that I can access the tables, indexes

Answer 1

I have got this problem a month ago.

1-Go to C:\Documents and Settings\"your profile"\Application Data\SQL Developer

2-Save your connection : o.jdeveloper.db.connection.11.1.1.0.22.49.35

3-delete the C:\Documents and Settings\"your profile"\Application Data\SQL Developer

4-restart SQL developer, will recreate the same directory structure.

5-exit SQL developer

6-copy the backup "o.jdeveloper.db.connection.11.1.1.0.22.49.35" to C:\Documents and Settings\"your profile"\Application Data\SQL Developer

7- you should be able to see the connection tab