I have a problem connecting to Oracle 11G with the PL / SQL Developer.
First I performed the Oracle 11g installation, then I installed Oracle Forms and Reports and also the PL / SQL Developer 9.0.51648. After I copied the tnsnames.ora from the database that is in the
"C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN"
"C:\orant\NET80\ADMIN"
Access violation at address 67614F04 in module 'ORA805.dll'. Write of address 00000160
Att.