python - Linux。连接到 Oracle。 cx_Oracle.DatabaseError : DPI-1047 Cannot locate a 64-bit Oracle Client library: "libclntsh. 所以

Question

我遇到错误“cx_Oracle.DatabaseError:DPI-1047:无法找到 64 位 Oracle 客户端库:“libclntsh.so:无法打开共享对象文件:没有这样的文件或目录”。请参阅 https://oracle.github.io/odpi/doc/installation.html#linux 获取帮助”

我看到了https://oracle.github.io/odpi/doc/installation.html#oracle-instant-client-zip和 How to fix: cx_Oracle.DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library - Python

我一直在Windows上工作，只学习Linux系统。我需要帮助解决这个问题。从 python 连接到 Oracle:

import cx_Oracle
con = cx_Oracle.connect('<USER>/<PASSWORD>@<HOST>:<PORT>/<SID>')

我从未从 Linux 连接过。这是第一次。

user@postgresql:~/opt$ cd oracle
user@postgresql:~/opt/oracle$ unzip instantclient-basic-linux.x64-12.2.0.1.0.zip
Archive:  instantclient-basic-linux.x64-12.2.0.1.0.zip
inflating: instantclient_12_2/adrci  
inflating: instantclient_12_2/BASIC_README  
inflating: instantclient_12_2/genezi  
inflating: instantclient_12_2/libclntshcore.so.12.1  
inflating: instantclient_12_2/libclntsh.so.12.1  
inflating: instantclient_12_2/libipc1.so  
inflating: instantclient_12_2/libmql1.so  
inflating: instantclient_12_2/libnnz12.so  
inflating: instantclient_12_2/libocci.so.12.1  
inflating: instantclient_12_2/libociei.so  
inflating: instantclient_12_2/libocijdbc12.so  
inflating: instantclient_12_2/libons.so  
inflating: instantclient_12_2/liboramysql12.so  
inflating: instantclient_12_2/ojdbc8.jar  
inflating: instantclient_12_2/uidrvci  
inflating: instantclient_12_2/xstreams.jar
user@postgresql:~$ sudo apt install libaio1
user@postgresql:/etc/ld.so.conf.d$ sudo nano oracle-instantclient.conf
user@postgresql:/etc/ld.so.conf.d$ sudo ldconfig
user@postgresql:/etc/ld.so.conf.d$ sudo export 
LD_LIBRARY_PATH=/opt/oracle/instantclient_12_2:$LD_LIBRARY_PATH

Linux

user@postgresql:~$ cat /proc/version
Linux version 5.3.0-46-generic (buildd@lgw01-amd64-003) (gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2)) #38-Ubuntu SMP Fri Mar 27 17:37:05 UTC 2020

Answer 1

对于 WSL Ubuntu

1. 您将从 https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html 下载适用于 Linux 的 instantclient-basic 和 instantclient-sqlplus 的 zip 版本
2. 创建一个名为/opt/oracle 的文件夹

sudo mkdir -p /opt/oracle
cd /opt/oracle/

现在安装 zip 和 libaio1

apt-get install zip libaio1
cd /opt/oracle/

将 instantclient basic 和 sqlplus 版本解压到创建的 oracle 文件夹中。

unzip /location/to/your/download/instantclient-basic-linux.x64-12.2.0.1.0.zip
unzip /location/to/your/download/instantclient-sqlplus-linux.x64-12.2.0.1.0.zip

将目录更改为 instantclient_12_2

cd instantclient_12_2/

运行以下命令

ln -s libclntsh.so.12.1 libclntsh.so
ln -s libocci.so.12.1 libocci.so

编辑 .bashrc 文件以设置 oracle 主目录。

sudo nano $HOME/.bashrc

将以下行添加到 .bashrc 末尾

# set oracle home at the end of the file
export ORACLE_HOME=/opt/oracle/instantclient_12_2
export LD_LIBRARY_PATH=$ORACLE_HOME:$LD_LIBRARY_PATH
export PATH=$ORACLE_HOME:$PATH

并且

source $HOME/.bashrc

最后，安装cx_Oracle