Docker 上的 cx_Oracle：DPI-1047：无法加载 64 位 Oracle 客户端库：“libclntsh.so
Posted
技术标签:
【中文标题】Docker 上的 cx_Oracle：DPI-1047：无法加载 64 位 Oracle 客户端库：“libclntsh.so【英文标题】：cx_Oracle on Docker : DPI-1047: 64-bit Oracle Client library cannot be loaded: "libclntsh.so 【发布时间】：2020-06-19 21:49:52 【问题描述】：我正在尝试使用 cx_Oracle 构建 Docker 映像。
这是我正在使用的 Dockerfile：
FROM oraclelinux:7-slim
ARG release=18
ARG update=3
RUN yum -y install oracle-release-el7 && \
yum-config-manager --enable ol7_oracle_instantclient && \
yum -y install oracle-instantclient$release.$update-basic && \
rm -rf /var/cache/yum
COPY ./fetch_session_iptv.py /opt/
COPY ./conf/fetch_session_iptv.conf /opt/conf/
#COPY ./conf/certs/* /opt/conf/certs/
COPY ./logs /opt/logs
RUN yum install -y \
#https://yum.oracle.com/repo/OracleLinux/OL7/developer/x86_64/getPackage/oracle-instantclient18.3-basic-18.3.0.0.0-2.x86_64.rpm \
https://yum.oracle.com/repo/OracleLinux/OL7/developer/x86_64/getPackage/python36-cx_Oracle-7.0-1.0.2.el7.x86_64.rpm \
https://yum.oracle.com/repo/OracleLinux/OL7/developer/x86_64/getPackage/python36-pytz-2016.10-2.0.1.el7.noarch.rpm
COPY ./python_requirements/elasticsearch-7.8.0-py2.py3-none-any.whl .
COPY ./python_requirements/certifi-2020.4.5.2-py2.py3-none-any.whl .
COPY ./python_requirements/urllib3-1.25.9-py2.py3-none-any.whl .
RUN pip3 install --user \
certifi-2020.4.5.2-py2.py3-none-any.whl \
urllib3-1.25.9-py2.py3-none-any.whl \
elasticsearch-7.8.0-py2.py3-none-any.whl
#CMD ["/bin/bash"]
CMD [ "python3", "/opt/fetch_session_iptv.py" ]
这直接来自 Oracle 文档：ODPI-C Installation
图像似乎正确构建：
Sending build context to Docker daemon 3.214GB
Step 1/13 : FROM oraclelinux:7-slim
---> 7442ca158991
Step 2/13 : ARG release=18
---> Using cache
---> a9601d8b5721
Step 3/13 : ARG update=3
---> Using cache
---> 9c82b94480af
Step 4/13 : RUN yum -y install oracle-release-el7 && yum-config-manager --enable ol7_oracle_instantclient && yum -y install oracle-instantclient$release.$update-basic && rm -rf /var/cache/yum
---> Using cache
---> aadfe1be7fe3
Step 5/13 : COPY ./fetch_session_iptv.py /opt/
---> Using cache
---> b3346172a4d4
Step 6/13 : COPY ./conf/fetch_session_iptv.conf /opt/conf/
---> Using cache
---> a0b0def735fc
Step 7/13 : COPY ./logs /opt/logs
---> Using cache
---> 32e1a82972f7
Step 8/13 : RUN yum install -y https://yum.oracle.com/repo/OracleLinux/OL7/developer/x86_64/getPackage/python36-cx_Oracle-7.0-1.0.2.el7.x86_64.rpm https://yum.oracle.com/repo/OracleLinux/OL7/developer/x86_64/getPackage/python36-pytz-2016.10-2.0.1.el7.noarch.rpm
---> Running in 50a6545982aa
Loaded plugins: ovl
Examining /var/tmp/yum-root-5QFxy8/python36-cx_Oracle-7.0-1.0.2.el7.x86_64.rpm: python36-cx_Oracle-7.0-1.0.2.el7.x86_64
Marking /var/tmp/yum-root-5QFxy8/python36-cx_Oracle-7.0-1.0.2.el7.x86_64.rpm to be installed
Examining /var/tmp/yum-root-5QFxy8/python36-pytz-2016.10-2.0.1.el7.noarch.rpm: python36-pytz-2016.10-2.0.1.el7.noarch
Marking /var/tmp/yum-root-5QFxy8/python36-pytz-2016.10-2.0.1.el7.noarch.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package python36-cx_Oracle.x86_64 0:7.0-1.0.2.el7 will be installed
--> Processing Dependency: python(abi) = 3.6 for package: python36-cx_Oracle-7.0-1.0.2.el7.x86_64
--> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: python36-cx_Oracle-7.0-1.0.2.el7.x86_64
---> Package python36-pytz.noarch 0:2016.10-2.0.1.el7 will be installed
--> Running transaction check
---> Package python3.x86_64 0:3.6.8-13.0.1.el7 will be installed
--> Processing Dependency: python3-pip for package: python3-3.6.8-13.0.1.el7.x86_64
--> Processing Dependency: python3-setuptools for package: python3-3.6.8-13.0.1.el7.x86_64
---> Package python3-libs.x86_64 0:3.6.8-13.0.1.el7 will be installed
--> Processing Dependency: libtirpc.so.1()(64bit) for package: python3-libs-3.6.8-13.0.1.el7.x86_64
--> Running transaction check
---> Package libtirpc.x86_64 0:0.2.4-0.16.el7 will be installed
---> Package python3-pip.noarch 0:9.0.3-7.el7_8 will be installed
---> Package python3-setuptools.noarch 0:39.2.0-10.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
python36-cx_Oracle x86_64 7.0-1.0.2.el7 /python36-cx_Oracle-7.0-1.0.2.el7.x86_64
1.3 M
python36-pytz noarch 2016.10-2.0.1.el7 /python36-pytz-2016.10-2.0.1.el7.noarch
919 k
Installing for dependencies:
libtirpc x86_64 0.2.4-0.16.el7 ol7_latest 89 k
python3 x86_64 3.6.8-13.0.1.el7 ol7_latest 69 k
python3-libs x86_64 3.6.8-13.0.1.el7 ol7_latest 7.0 M
python3-pip noarch 9.0.3-7.el7_8 ol7_latest 1.8 M
python3-setuptools noarch 39.2.0-10.el7 ol7_latest 628 k
Transaction Summary
================================================================================
Install 2 Packages (+5 Dependent packages)
Total size: 12 M
Total download size: 9.5 M
Installed size: 50 M
Downloading packages:
--------------------------------------------------------------------------------
Total 1.5 MB/s | 9.5 MB 00:06
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libtirpc-0.2.4-0.16.el7.x86_64 1/7
Installing : python3-libs-3.6.8-13.0.1.el7.x86_64 2/7
Installing : python3-setuptools-39.2.0-10.el7.noarch 3/7
Installing : python3-pip-9.0.3-7.el7_8.noarch 4/7
Installing : python3-3.6.8-13.0.1.el7.x86_64 5/7
Installing : python36-cx_Oracle-7.0-1.0.2.el7.x86_64 6/7
Installing : python36-pytz-2016.10-2.0.1.el7.noarch 7/7
Verifying : python3-3.6.8-13.0.1.el7.x86_64 1/7
Verifying : libtirpc-0.2.4-0.16.el7.x86_64 2/7
Verifying : python36-cx_Oracle-7.0-1.0.2.el7.x86_64 3/7
Verifying : python3-libs-3.6.8-13.0.1.el7.x86_64 4/7
Verifying : python3-setuptools-39.2.0-10.el7.noarch 5/7
Verifying : python36-pytz-2016.10-2.0.1.el7.noarch 6/7
Verifying : python3-pip-9.0.3-7.el7_8.noarch 7/7
Installed:
python36-cx_Oracle.x86_64 0:7.0-1.0.2.el7
python36-pytz.noarch 0:2016.10-2.0.1.el7
Dependency Installed:
libtirpc.x86_64 0:0.2.4-0.16.el7 python3.x86_64 0:3.6.8-13.0.1.el7
python3-libs.x86_64 0:3.6.8-13.0.1.el7 python3-pip.noarch 0:9.0.3-7.el7_8
python3-setuptools.noarch 0:39.2.0-10.el7
Complete!
Removing intermediate container 50a6545982aa
---> 3345ba39b755
Step 9/13 : COPY ./python_requirements/elasticsearch-7.8.0-py2.py3-none-any.whl .
---> dcc4f0c5a5c5
Step 10/13 : COPY ./python_requirements/certifi-2020.4.5.2-py2.py3-none-any.whl .
---> e47c23f75225
Step 11/13 : COPY ./python_requirements/urllib3-1.25.9-py2.py3-none-any.whl .
---> f850ea09150d
Step 12/13 : RUN pip3 install --user certifi-2020.4.5.2-py2.py3-none-any.whl urllib3-1.25.9-py2.py3-none-any.whl elasticsearch-7.8.0-py2.py3-none-any.whl
---> Running in d01bf60be689
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Processing /certifi-2020.4.5.2-py2.py3-none-any.whl
Processing /urllib3-1.25.9-py2.py3-none-any.whl
Processing /elasticsearch-7.8.0-py2.py3-none-any.whl
Installing collected packages: certifi, urllib3, elasticsearch
Successfully installed certifi-2020.4.5.2 elasticsearch-7.8.0 urllib3-1.25.9
Removing intermediate container d01bf60be689
---> 4d38468f3a00
Step 13/13 : CMD [ "python3", "/opt/fetch_session_iptv.py" ]
---> Running in c2fdb466cd69
Removing intermediate container c2fdb466cd69
---> a614ef5071ac
Successfully built a614ef5071ac
Successfully tagged kansas-fetch:1.5-SNAPSHOT
但是当我尝试运行它时，我收到以下错误消息，即使应该安装 Oracle 客户端：
Traceback (most recent call last):
python_metro_kansas_sql | File "/opt/fetch_session_iptv.py", line 27, in <module>
python_metro_kansas_sql | with cx_Oracle.connect("test","test", "test") as connection:
python_metro_kansas_sql | cx_Oracle.DatabaseError: DPI-1047: 64-bit Oracle Client library cannot be loaded: "libclntsh.so: cannot open shared object file: No such file or directory". See https://oracle.github.io/odpi/doc/installation.html#linux for help
知道如何解决这个问题吗？
我尝试使用不同版本的 Oracle Client 和 cx_Oracle，但没有区别。
【问题讨论】：
【参考方案1】：对于 19c 之前的 RPM，您需要在安装 Instant Client RPM 时更新系统库搜索路径。推荐的方式是使用ldconfig，如Oracle's sample 18c Dockerfile所示：
RUN yum -y install oracle-release-el7 \
yum -y install oracle-instantclient$release.$update-basic oracle-instantclient$release.$update-devel oracle-instantclient$release.$update-sqlplus && \
rm -rf /var/cache/yum && \
echo /usr/lib/oracle/$release.$update/client64/lib > /etc/ld.so.conf.d/oracle-instantclient$release.$update.conf && \
ldconfig
但是，您应该改用 19c，它会在 RPM 包安装期间自动执行此操作，请参阅 sample Instant Client 19c Dockerfile。 19c 版本将让您的应用程序连接到与 18c Instant Client 相同的数据库版本，因此使用旧版本没有任何意义。
（注意使用 Instant Client 19c ZIP 文件仍需要手动设置系统库搜索路径）。
【讨论】：
github.com/oracle/docker-images/tree/master/…上的 Oracle Linux 组有一些 Python Dockerfiles以上是关于Docker 上的 cx_Oracle：DPI-1047：无法加载 64 位 Oracle 客户端库：“libclntsh.so的主要内容，如果未能解决你的问题，请参考以下文章