cx_Oracle模塊安裝錯誤消息

Question

我使用Python 2.7（32位）和我的操作系統是64位Windows 7

我試圖安裝cx_Oracle模塊。我運行了msi「cx_Oracle-5.1.2-10g.win32-py2.7.msi」，然後我在cmd行運行「easy_install cx_Oracle」，並得到以下消息：

錯誤：無法找到vcvarsall .BAT

我在這個網站，最好的解決辦法是安裝Microsoft Visual Studio 2008中，這是我從一個鏈接我在此網站上發現沒發現。

現在，當我運行CMD線我得到以下信息，我不知道這意味着什麼「的easy_install cx_Oracle」：

C:\Python27>easy_install cx_Oracle Searching for cx-Oracle Reading ....org/simple/cx_Oracle/ Reading ....net/crew/atuining Reading ...sourceforge.net Best match: cx-Oracle 5.1.2 Downloading http://prdownloads.sourceforge.net/cx-oracle/cx_Oracle-5.1.2.tar.gz ? download Processing cx_Oracle-5.1.2.tar.gz Writing c:\users\cnielsen\appdata\local\temp\easy_install-44rupd\cx_Oracle-5.1.2 \setup.cfg Running cx_Oracle-5.1.2\setup.py -q bdist_egg --dist-dir c:\users\cnielsen\appda ta\local\temp\easy_install-44rupd\cx_Oracle-5.1.2\egg-dist-tmp-eyihnb Traceback (most recent call last): File "C:\Python27\Scripts\easy_install-script.py", line 9, in load_entry_point('setuptools==0.8', 'console_scripts', 'easy_install')() File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1992 , in main File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1979 , in with_ei_usage File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1996 , in File "C:\Python27\lib\distutils\core.py", line 152, in setup dist.run_commands() File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands self.run_command(cmd) File "C:\Python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 380, in run File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 623, in easy_install File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 653, in install_item File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 849, in install_eggs File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1130 , in build_and_install File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1115 , in run_setup File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 69, in run_setup File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 120, in run File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 71, in File "setup.py", line 350, in File "C:\Python27\lib\distutils\core.py", line 152, in setup dist.run_commands() File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands self.run_command(cmd) File "C:\Python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "build\bdist.win-amd64\egg\setuptools\command\bdist_egg.py", line 185, in run File "build\bdist.win-amd64\egg\setuptools\command\bdist_egg.py", line 171, in call_command File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command self.distribution.run_command(command) File "C:\Python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "build\bdist.win-amd64\egg\setuptools\command\install_lib.py", line 20, i n run File "C:\Python27\lib\distutils\command\install_lib.py", line 111, in build self.run_command('build_ext') File "C:\Python27\lib\distutils\cmd.py", line 326, in run_command self.distribution.run_command(command) File "C:\Python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "build\bdist.win-amd64\egg\setuptools\command\build_ext.py", line 52, in run File "C:\Python27\lib\distutils\command\build_ext.py", line 339, in run self.build_extensions() File "C:\Python27\lib\distutils\command\build_ext.py", line 448, in build_exte nsions self.build_extension(ext) File "build\bdist.win-amd64\egg\setuptools\command\build_ext.py", line 186, in build_extension File "C:\Python27\lib\distutils\command\build_ext.py", line 498, in build_exte nsion depends=ext.depends) File "C:\Python27\lib\distutils\msvc9compiler.py", line 473, in compile self.initialize() File "C:\Python27\lib\distutils\msvc9compiler.py", line 383, in initialize vc_env = query_vcvarsall(VERSION, plat_spec) File "C:\Python27\lib\distutils\msvc9compiler.py", line 299, in query_vcvarsal l raise ValueError(str(list(result.keys()))) ValueError: [u'path']

Answer 1

搜索後3天，我終於解決了這個問題。

訣竅是：

1. 安裝vcredist_x86.exe。 安裝此之後，我跑easy_install cx_Oracle，不再看到原始的錯誤消息。
2. 重新安裝Python 2.7.5，確保它是32位版本（x86）的
3. 重新安裝IDE 「PyScripter」，確保它是32位版本（x86）的

Answer 2

的easy_install的步驟嘗試編譯在cx_Oracle源的機器，但這不是必需的，因爲您已經安裝了MSI，它是一個預編譯的二進制版本。

您所安裝的MSI應該足夠使用cx_Oracle，只要你有二進制Oracle客戶端安裝好了（例如，instantclient）。

Answer 3

重申萊昂德羅說什麼，你不需要easy_install的cx_Oracle如果你已經跑了.msi安裝，你需要安裝oracle的instantclient。

正如你已經發現了，在安裝Oracle instantclient意味着你只需要簡單地把它解壓到您的系統文件夾（例如：C：\ oraclient）。

有些事情要記住：

確保您使用cx_Oracle，instantclient相同版本（或兼容版本），以及數據庫服務器本身。例如instantclient v12不支持版本10以下的數據庫服務器）。此外，請確保您使用的是全部32位或全部64位版本（包括cx_Oracle，instantclient和python本身）。

此外，您需要將環境變量ORACLE_HOME和PATH設置到解壓縮oracle instantclient的目錄（例如：C：\ oraclient）以避免您提到的ImportError錯誤（DLL加載失敗：％1爲不是有效的Win32應用程序）。 ImportError僅僅意味着它找不到所需的庫。

Answer 4

由於cx_Oracle只能使用Oracle TNS名稱工具進行連接，因此您可能還需要設置TNS_ADMIN環境變量以指示要使用的TNS名稱文件的位置。這個問題也咬我。

Answer 5

對於Windows 7 64位，您需要「Windows amd64安裝程序（Oracle 11g，Python 3.3）」。它也適用於英特爾。

我沒有InstantClient，但使用Oracle 11.2安裝（64位）中的SQL * Plus。