Install Oracle 11g R2 and windows711g in 64-bit Windows 7

Install Oracle 11g R2 and windows711g in 64-bit Windows 7
Win7 bit64 is installed with a 64-bit client. 

1. Connect PLSql to the database

(1) download the instantclient-basic-win32-11.2.0.1.0.zip to extract to the current Oracle project, and create a new network/admin/tnsnames. ora (2) Configure plsql oracle directory, such as: OK! 2... Net connection to the database  VS debugging error: "Please check whether the database has been started to load the oracle client. BadImageFormatException. if the 32-bit Oracle client component is installed and runs in 64-Bit mode, this problem occurs because "webserver in VS" is only 32-bit, it is equivalent to a 32-bit call to the 64-bit Oracle client. Solution: (1) use IIS for debugging. For example, (2) create a virtual directory and set the "application pool" to 32 bits, for example, (3) configure the "environment variable", for example, to change the Path to a place used for PLsql call.
How to install oracle 11g under win7 64bit

Has the hosts file changed since the virtual Nic is configured? To shield the IP address of 127.0.0.1 (not blocked after testing), change it to the machine name and the IP address of the virtual network card. Is there any listening?
Note: You can check the Installation Log. If the following error occurs
Oracle. sysman. emcp. exception. EMConfigException: An error occurred while starting Database Control.
At oracle. sysman. emcp. EMDBPostConfig. Too mconfiguration (EMDBPostConfig. java: 649)
At oracle. sysman. emcp. EMDBPostConfig. invoke (EMDBPostConfig. java: 227)
At oracle. sysman. emcp. EMDBPostConfig. invoke (EMDBPostConfig. java: 196)
At oracle. sysman. emcp. EMConfig. perform (EMConfig. java: 184)
At oracle. sysman. assistants. util. em. EMConfiguration. run (EMConfiguration. java: 449)
At java. lang. Thread. run (Thread. java: 534)
It may need to be patched to solve the problem, but your version is 11 GB and does not know whether it is applicable. Support.oracle.com to search for keyword "ID 1217493.1", you also need to download the latest version of opatch, and then use this key patch to solve this problem.
Supplement:
If the configuration of 10 Gb is correct, no problem is found when creating a database under 10.2.0.3 (included), including creating an OEM. For 10.2.0.4/5, you must install certical patch, after that, you can use dbca to delete the database and then create or directly Delete the original database. You can use the oem command to re-create the OEM. If you cannot find the patch to download, you can leave an email address and I will send you the latest version of opatch required for the patch and patching.

How to install oracle 11G R2 For Microsoft Windows (x64) with 64-bit win7)

You can install it directly.