Windows 7 64-bit installation of PLSQL developer

1. Download and install PLSQL developer. Tip: do not install it in the default c: \ Program Files (x86) directory. Otherwise, an unexpected error may occur. The local machine is installed in the C root directory. C: \ PLSQL developer 2. Download Windows 32-bit Oracle instant
Clinet. http://www.oracle.com/technetwork/database/features/instant-client/index-097480.htmlclick instant
Client for Microsoft Windows (32-bit) My system version is 11.2.0.1 so Select Download file: instantclient-basic-win32-11.2.0.1.0.zip 3, unzip to D: \ oracle11g \ admin \ product, the decompression path is up to you. You can solve the problem if you want to solve the problem or press it if you want. Instantclient_11_2 can also be renamed. Path: D: \ oracle11g \ admin \ product \ instantclient_11_2 4. Open PLSQL developer and modify parameters. On the menu bar of PLSQL developer, there is a very eye-catching tool. Click it without hesitation, select preferences, and then select Oracle -- connection at the top, the right side will show the Oracle Home (empty is autodetect) and OCI Library (empty is autodetect ). oracle Home: D: \ oracle11g \ admin \ product \ instantclient_11204 CI libray: D: \ oracle11g \ admin \ product \ instantclient_11_2 the specific instantclient_11_2 path is based on your own machine, do not select the imitation. After entering the information, click the Apply button, and then click OK. More than half of the tasks are completed. 5. In the operating system, give the PLSQL developer a name. In fact, it is a secret. If this step environment variables are not set, it is very likely to open the PLSQL developer login will experience a long wait, Altman's machine even experienced a faint, finally will pop up the following error: ORA-12154: TNS: count not resolve the connect identified specified or ORA-12705: cannot access nlsdata files
Or invalid solution: Add environment variables to the system. My computer-properties-advanced system settings-environment variables-click New under system variables-variable name: tns_admin variable value: D: \ oracle11g \ admin \ product \ 11.2.0 \ dbhome_1 \ Network \ adminoracle Network/admin 6. Solve Chinese garbled characters. If you can read a series? The meaning of this step can be skipped unless you wear a lens. 1. open the Registry: Start-run-regedithkey_local_machine/software/Oracle/key_oradb11g_home1/oledb right-click on the right side-create -- string value-name changed to: nls_lang value set to: Simplified chinese_china.zhs16. my computer-properties-advanced system settings-environment variables-click New under system variables-variable name: nls_lang variable value: Simplified chinese_china.zhs16gbk