python3.6.5访问数据库报错cx_Oracle.DatabaseError:DPI-1047:64-bit Oracle Client library cannot be loaded

最新推荐文章于 2024-05-09 15:53:20 发布
原创 最新推荐文章于 2024-05-09 15:53:20 发布 · 3.6k 阅读 · 0 ·
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本文介绍了解决Python使用cx_Oracle模块时遇到的位数不匹配问题。当出现oracle客户端、Python及cx_Oracle位数不一致错误时，需要确保三者均为同一位数版本（32位或64位）。文中通过卸载32位oracle客户端并重新配置的方式解决了该问题。

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调试python代码时报错，要求oracle客户端、python、cx_Oracle的位数相同，要么都是32位，要么都是64位。


检查发现安装的oracle客户端为32位（查询任务管理器-进程），果断卸载oracle客户端；



wangying202
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cx_Oracle.DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library:
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首先确定pthon版本和oracle客户端版本一致即可，即都为64位或都为32位。 但我这里要讲的是如何解决这个问题的过程： 在python中的报错中提示了这个： DPI-1047: Cannot locate a 64-bit Oracle Client library: “The specified module could not be found”. See https://cx-oracle.readthedocs.io/en/latest/user_guide/installation.html
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testpath-0.3.1-py36h2698cfe_0.tar.bz2 Removed tk-8.6.7-hcb92d03_3.tar.bz2 Removed toolz-0.9.0-py36_0.tar.bz2 Removed tornado-5.0.2-py36_0.tar.bz2 Removed traitlets-4.3.2-py36h096827d_0.tar.bz2 Removed typing-3.6.4-py36_0.tar.bz2 Removed unicodecsv-0.14.1-py36h6450c06_0.tar.bz2 Removed urllib3-1.22-py36h276f60a_0.tar.bz2 Removed vc-14-h0510ff6_3.tar.bz2 Removed vs2015_runtime-14.0.25123-3.tar.bz2 Removed wcwidth-0.1.7-py36h3d5aa90_0.tar.bz2 Removed webencodings-0.5.1-py36h67c50ae_1.tar.bz2 Removed werkzeug-0.14.1-py36_0.tar.bz2 Removed wheel-0.31.1-py36_0.tar.bz2 Removed widgetsnbextension-3.2.1-py36_0.tar.bz2 Removed wincertstore-0.2-py36h7fe50ca_0.tar.bz2 Removed winpty-0.4.3-4.tar.bz2 Removed win_inet_pton-1.0.1-py36he67d7fd_1.tar.bz2 Removed win_unicode_console-0.5-py36hcdbd4b5_0.tar.bz2 Removed wrapt-1.10.11-py36he5f5981_0.tar.bz2 Removed xlrd-1.1.0-py36h1cb58dc_1.tar.bz2 Removed xlsxwriter-1.0.4-py36_0.tar.bz2 Removed xlwings-0.11.8-py36_0.tar.bz2 Removed xlwt-1.3.0-py36h1a4751e_0.tar.bz2 Removed yaml-0.1.7-hc54c509_2.tar.bz2 Removed zeromq-4.2.5-hc6251cf_0.tar.bz2 Removed zict-0.1.3-py36h2d8e73e_0.tar.bz2 Removed zlib-1.2.11-h8395fce_2.tar.bz2 Removed _ipyw_jlab_nb_ext_conf-0.1.0-py36he6757f0_0.tar.bz2 Cache location: D:\ruanjian\anaconda3\pkgs Will remove the following packages: D:\ruanjian\anaconda3\pkgs -------------------------- anaconda-5.2.0-py36_3 65 KB blas-1.0-mkl 17 KB conda-env-2.6.0-h36134e3_1 6 KB dask-0.17.5-py36_0 10 KB get_terminal_size-1.0.0-h38e98db_0 7 KB msys2-conda-epoch-20160418-1 5 KB numpy-1.14.3-py36h9fa60d3_1 232 KB vc-14-h0510ff6_3 8 KB --------------------------------------------------- Total: 350 KB removing anaconda-5.2.0-py36_3 removing blas-1.0-mkl removing conda-env-2.6.0-h36134e3_1 removing dask-0.17.5-py36_0 removing get_terminal_size-1.0.0-h38e98db_0 removing msys2-conda-epoch-20160418-1 removing numpy-1.14.3-py36h9fa60d3_1 removing vc-14-h0510ff6_3 source cache (D:\ruanjian\anaconda3\conda-bld\src_cache) Size: 0 B git cache (D:\ruanjian\anaconda3\conda-bld\git_cache) Size: 0 B hg cache (D:\ruanjian\anaconda3\conda-bld\hg_cache) Size: 0 B svn cache (D:\ruanjian\anaconda3\conda-bld\svn_cache) Size: 0 B Total: 0 B Removing D:\ruanjian\anaconda3\conda-bld\src_cache Removing D:\ruanjian\anaconda3\conda-bld\git_cache Removing D:\ruanjian\anaconda3\conda-bld\hg_cache Removing D:\ruanjian\anaconda3\conda-bld\svn_cache (base) C:\Users\60925>conda update -n base -c defaults conda Solving environment: failed CondaValueError: Malformed version string '~': invalid character(s). (base) C:\Users\60925>
最新发布
06-27
<think>我们面对的核心问题是：Conda更新过程中出现`CondaValueError:Malformedversionstring&#39;~&#39;:invalidcharacter(s)`错误。根据引用内容，这通常是由于Conda版本过旧（如4.7.x）导致无法解析新版元数据格式[^2]。另外，镜像源配置问题也可能导致此类错误[^3]。###解决方案步骤（Windows系统）####步骤1：强制重装Conda（修复旧版问题）```cmd::强制重新安装Conda核心组件condainstall-nbaseconda--force-reinstall```####步骤2：清除缓存（解决元数据损坏）```cmdcondaclean--all-y```####步骤3：更换镜像源（避免下载问题）```cmd::生成新的.condarc配置文件（使用阿里云镜像）condaconfig--setshow_channel_urlsyescondaconfig--remove-keydefault_channelscondaconfig--adddefault_channelshttps://mirrors.aliyun.com/anaconda/pkgs/maincondaconfig--adddefault_channelshttps://mirrors.aliyun.com/anaconda/pkgs/rcondaconfig--adddefault_channelshttps://mirrors.aliyun.com/anaconda/pkgs/msys2```####步骤4：验证修复```cmdcondaupdate--dry-runconda#模拟更新应无报错```###终极解决方案（当上述步骤无效时）若仍失败，则需完全卸载Anaconda后重新安装：1.**卸载步骤**：-通过Windows控制面板卸载Anaconda-手动删除残留文件夹：-`C:\Users\<用户名>\Anaconda3`-`C:\Users\<用户名>\.condarc`-`C:\Users\<用户名>\.conda`2.**重新安装**：-从[Anaconda归档仓库](https://repo.anaconda.com/archive/)下载最新安装包（如`Anaconda3-2024.02-1-Windows-x86_64.exe`）[^2]-安装时勾选"AddtoPATH"（环境变量自动配置）###数学原理说明版本解析错误源于旧版Conda无法处理新版元数据中的波浪符`~`（语义等价于`>=`但允许最后一位版本号变化）。定义版本集合$V$，约束函数$C:V\rightarrow\{0,1\}$，则：$$C(v)=\begin{cases}1&\text{if}v\in\text{validversions}\\0&\text{otherwise}\end{cases}$$旧版Conda的$C_{\text{old}}$函数无法识别`~`运算符，导致$C_{\text{old}}(\text{"~1.2.3"})=0$引发错误[^1]。###验证成功标准```cmdconda--version#应显示24.x.x（2024年后版本）condaupdateconda-y#实际执行更新```---§§相关问题§§1.如何永久配置Conda使用国内镜像源？2.Conda环境损坏后如何恢复已安装的包列表？3.在Windows系统中如何彻底卸载Anaconda？[^1]:基于版本约束解析的数学建模[^2]:引用重装方案有效性验证[^3]:镜像源配置对元数据获取的影响</think>### 解决 Conda 更新失败问题（CondaValueError: Malformed version string &#39;~&#39;） 根据您遇到的 `CondaValueError: Malformed version string &#39;~&#39;` 错误和引用内容分析，这是由旧版 Conda（特别是 4.x 版本）无法解析新版元数据格式导致的[^2]。以下是完整的解决方案： #### 解决方案步骤 1. **强制重装 Conda 核心组件**（修复损坏的安装） ```bash conda install -n base conda --force-reinstall ``` 2. **清除缓存**（解决元数据损坏） ```bash conda clean --all -y ``` 3. **更换镜像源**（解决下载问题，引用[3]方案） ```bash # 生成新的.condarc配置文件 conda config --set show_channel_urls yes conda config --remove-key default_channels # 添加阿里云镜像源 conda config --add default_channels https://mirrors.aliyun.com/anaconda/pkgs/main conda config --add default_channels https://mirrors.aliyun.com/anaconda/pkgs/r conda config --add default_channels https://mirrors.aliyun.com/anaconda/pkgs/msys2 ``` 4. **验证修复** ```bash conda update --dry-run conda # 测试更新应无报错 conda --version # 应显示24.x.x（2024年后版本） ``` #### 终极解决方案（当上述步骤无效时） 若仍失败，需完全重装 Anaconda： 1. 卸载现有 Anaconda（包括删除 `C:\Users\<用户名>\Anaconda3` 和 `C:\Users\<用户名>\.condarc`） 2. 从 [Anaconda 归档仓库](https://repo.anaconda.com/archive/) 下载最新安装包（如 `Anaconda3-2024.02-1-Windows-x86_64.exe`）[^2] 3. 安装时**不勾选**"Add to PATH"（避免环境变量冲突） #### 错误原因分析 该错误源于版本约束解析的数学模型失效： $$ \text{VersionParser}(v) = \begin{cases} \text{valid} & \text{if } v \in \mathbb{V} \\ \text{error} & \text{if } \exists c \in v \text{ s.t. } c \notin [0-9a-zA-Z\.\*] \end{cases} $$ 其中 $\mathbb{V}$ 是有效版本集合。波浪符 `~` 在新规范中被引入但旧解析器无法识别[^1]。 ---
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