cx_Oracle.DatabaseError: DPI-1047
ODPI-C Installation¶
Overview¶
To use ODPI-C in your own project, download its source from GitHub. A sample Makefile is provided if you wish to build ODPI-C as a shared library. Otherwise, add the ODPI-C source code to your project. On Windows, Visual Studio 2008 or higher is required. On macOS, Xcode 6 or higher is required. On Linux, GCC 4.4 or higher is required.
Projects using ODPI-C require Oracle Client libraries to be installed. The libraries provide the necessary network connectivity allowing applications to access an Oracle Database instance. They also provide basic and advanced connection management and data features to ODPI-C applications.
The simplest Oracle Client is the free Oracle Instant Client. Only the “Basic” or “Basic Light” package is required. Oracle Client libraries are also available in any Oracle Database installation or full Oracle Client installation.
ODPI-C explicitly loads available Oracle Client libraries at runtime. This allows code using ODPI-C to be built only once, and then run using available Oracle Client 11.2, 12.1 or 12.2 libraries. On non-Windows platforms, if no Oracle Client is located in the standard operating system search page (e.g. LD_LIBRARY_PATH
), then ORACLE_HOME
is searched. If Oracle Client libraries are still not found, the error “DPI-1047: Oracle Client library cannot be loaded” is raised.
The following sections explain how to ensure the Oracle Client is installed and configured correctly on the various platforms so that ODPI-C is able to find it.
ODPI-C has been tested on Linux, Windows and macOS. Other platforms should also work but have not been tested.
Oracle Client and Database Versions¶
ODPI-C can use Oracle Client 11.2, 12.1 or 12.2 libraries.
Oracle’s standard client-server network interoperability allows connections between different versions of Oracle Client and Oracle Database. For certified configurations see Oracle Support’s Doc ID 207303.1. In summary, Oracle Client 12.2 can connect to Oracle Database 11.2 or greater. Oracle Client 12.1 can connect to Oracle Database 10.2 or greater. Oracle Client 11.2 can connect to Oracle Database 9.2 or greater. The technical restrictions on creating connections may be more flexible. For example Oracle Client 12.2 can successfully connect to Oracle Database 10.2.
Since a single ODPI-C binary can use multiple client versions and access multiple database versions, it is important your application is tested in your intended release environments. Newer Oracle clients support new features, such as the oraaccess.xml external configuration file available with 12.1 or later clients, and session pool enhancements to dead connection detection in 12.2 clients.
The function dpiContext_getClientVersion()
can be used to determine which Oracle Client version is in use and the function dpiConn_getServerVersion()
can be used to determine which Oracle Database version a connection is accessing. These can then be used to adjust application behavior accordingly. Attempts to use some Oracle features that are not supported by a particular client/server combination may result in runtime errors. These include:
- when attempting to access attributes that are not supported by the current Oracle Client library you will get the error “ORA-24315: illegal attribute type”
- when attempting to use implicit results with Oracle Client 11.2 against Oracle Database 12c you will get the error “ORA-29481: Implicit results cannot be returned to client”
- when attempting to get array DML row counts with Oracle Client 11.2 you will get the error “DPI-1013: not supported”
Linux¶
ODPI-C requires Oracle Client libraries, which are found in Oracle Instant Client, or an Oracle Database installation, or in a full Oracle Client installation. The libraries must be either 32-bit or 64-bit, matching your application and ODPI-C library (if one is created separately).
On Linux, ODPI-C first searches for a library called “libclntsh.so” using the standard library search order. If this is not found, it will then search for “libclntsh.so.12.1” and then for “libclntsh.so.11.1” before returning an error.
Oracle Instant Client Zip¶
To run ODPI-C applications with Oracle Instant Client zip files:
Download an Oracle 11.2, 12.1 or 12.2 “Basic” or “Basic Light” zip file: 64-bit or 32-bit, matching your application architecture.
Unzip the package into a single directory that is accessible to your application. For example:
mkdir -p /opt/oracle
cd /opt/oracle
unzip instantclient-basic-linux.x64-12.2.0.1.0.zipInstall the
libaio
package with sudo or as the root user. For example:sudo yum install libaio
On some Linux distributions this package is called
libaio1
instead.If there is no other Oracle software on the machine that will be impacted, permanently add Instant Client to the runtime link path. For example, with sudo or as the root user:
sudo sh -c "echo /opt/oracle/instantclient_12_2 > /etc/ld.so.conf.d/oracle-instantclient.conf"
sudo ldconfigAlternatively, set the environment variable
LD_LIBRARY_PATH
to the appropriate directory for the Instant Client version. For example:export LD_LIBRARY_PATH=/opt/oracle/instantclient_12_2:$LD_LIBRARY_PATH
If you intend to co-locate optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
with Instant Client, then create anetwork/admin
subdirectory. For example:mkdir -p /opt/oracle/instantclient_12_2/network/admin
This is the default Oracle configuration directory for applications linked with this Instant Client.
Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
Oracle Instant Client RPM¶
To run ODPI-C applications with Oracle Instant Client RPMs:
Download an Oracle 11.2, 12.1 or 12.2 “Basic” or “Basic Light” RPM: 64-bit or 32-bit, matching your application architecture.
Install the downloaded RPM with sudo or as the root user. For example:
sudo yum install oracle-instantclient12.2-basic-12.2.0.1.0-1.x86_64.rpm
Yum will automatically install required dependencies, such as
libaio
.If there is no other Oracle software on the machine that will be impacted, permanently add Instant Client to the runtime link path. For example, with sudo or as the root user:
sudo sh -c "echo /usr/lib/oracle/12.2/client64/lib > /etc/ld.so.conf.d/oracle-instantclient.conf"
sudo ldconfigAlternatively, set the environment variable
LD_LIBRARY_PATH
to the appropriate directory for the Instant Client version. For example:export LD_LIBRARY_PATH=/usr/lib/oracle/12.2/client64/lib:$LD_LIBRARY_PATH
If you intend to co-locate optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
with Instant Client, then create anetwork/admin
subdirectory underlib/
. For example:sudo mkdir -p /usr/lib/oracle/12.2/client64/lib/network/admin
This is the default Oracle configuration directory for applications linked with this Instant Client.
Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
Local Database or Full Oracle Client¶
ODPI-C applications can use Oracle Client 11.2, 12.1 or 12.2 libraries from a local Oracle Database or full Oracle Client installation.
The libraries must be either 32-bit or 64-bit, matching your application and ODPI-C library (if one is created separately).
Set required Oracle environment variables by running the Oracle environment script. For example:
source /usr/local/bin/oraenv
For Oracle Database XE, run:
source /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh
Optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
can be placed in$ORACLE_HOME/network/admin
.Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
Windows¶
ODPI-C requires Oracle Client libraries, which are found in Oracle Instant Client, or an Oracle Database installation, or in a full Oracle Client installation. The libraries must be either 32-bit or 64-bit, matching your application and ODPI-C library (if one is created separately).
On Windows, ODPI-C searches for the Oracle Client library “OCI.dll” using the standard library search order.
Oracle Client libraries require the presence of the correct Visual Studio redistributable.
- 11.2 : VS 2005 64-bit or VS 2005 32-bit
- 12.1 : VS 2010
- 12.2 : VS 2013
Oracle Instant Client Zip¶
To run ODPI-C applications with Oracle Instant Client zip files:
Download an Oracle 11.2, 12.1 or 12.2 “Basic” or “Basic Light” zip file: 64-bit or 32-bit, matching your application architecture.
Unzip the package into a single directory that is accessible to your application, for example
C:\oracle\instantclient_12_2
.Set the environment variable
PATH
to include the path that you created in step 2. For example, on Windows 7, updatePATH
in Control Panel -> System -> Advanced System Settings -> Advanced -> Environment Variables -> System Variables -> PATH.If you intend to co-locate optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
with Instant Client, then create anetwork\admin
subdirectory, for exampleC:\oracle\instantclient_12_2\network\admin
.This is the default Oracle configuration directory for applications linked with this Instant Client.
Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
Local Database or Full Oracle Client¶
The Oracle libraries must be either 32-bit or 64-bit, matching your application and ODPI-C library (if one is created separately).
To run ODPI-C applications using client libraries from a local Oracle Database (or full Oracle Client) 11.2, 12.1 or 12.2 installation:
Set the environment variable
PATH
to include the path that contains OCI.dll, if it is not already set. For example, on Windows 7, updatePATH
in Control Panel -> System -> Advanced System Settings -> Advanced -> Environment Variables -> System Variables -> PATH.Optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
can be placed in thenetwork/admin
subdirectory of the Oracle software.Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
macOS¶
ODPI-C requires Oracle Client libraries, which are found in Oracle Instant Client for macOS.
On macOS, ODPI-C first searches for a library called “libclntsh.dylib” using the standard library search order. If this is not found, it will then search for “libclntsh.dylib.12.1” and then for “libclntsh.dylib.11.1” before returning an error.
Oracle Instant Client Zip¶
To run ODPI-C applications with Oracle Instant Client zip files:
Download the 11.2, 12.1 or 12.2 “Basic” or “Basic Light” zip file from here. Choose either a 64-bit or 32-bit package, matching your application architecture. Most applications use 64-bit.
Unzip the package into a single directory that is accessible to your application. For example:
mkdir -p /opt/oracle
unzip instantclient-basic-macos.x64-12.2.0.1.0.zipAdd links to
$HOME/lib
or/usr/local/lib
to enable applications to find the library. For example:mkdir ~/lib
ln -s /opt/oracle/instantclient_12_2/libclntsh.dylib.12.1 ~/lib/Alternatively, copy the required OCI libraries. For example:
mkdir ~/lib
cp /opt/oracle/instantclient_12_2/{libclntsh.dylib.12.1,libclntshcore.dylib.12.1,libons.dylib,libnnz12.dylib,libociei.dylib} ~/lib/For Instant Client 11.2, the OCI libraries must be copied. For example:
mkdir ~/lib
cp /opt/oracle/instantclient_11_2/{libclntsh.dylib.11.1,libnnz11.dylib,libociei.dylib} ~/lib/If you intend to co-locate optional Oracle configuration files such as
tnsnames.ora
,sqlnet.ora
ororaaccess.xml
with Instant Client, then create anetwork/admin
subdirectory. For example:mkdir -p /opt/oracle/instantclient_12_2/network/admin
This is the default Oracle configuration directory for applications linked with this Instant Client.
Alternatively, Oracle configuration files can be put in another, accessible directory. Then set the environment variable
TNS_ADMIN
to that directory name.
Other Platforms¶
To run ODPI-C applications on other platforms (such as Solaris and AIX), follow the same general directions as for Linux Instant Client zip files or Local Database. Add the Oracle libraries to the appropriate library path variable, such as LD_LIBRARY_PATH
on Solaris, or LIBPATH
on AIX.
cx_Oracle.DatabaseError: DPI-1047的更多相关文章
- cx_Oracle.DatabaseError: ORA-12541: TNS:no listener
问题:利用Python连接Oracle时报错,完整过程如下 import cx_Oracle conn = cx_Oracle.connect('testma/dingjia@192.168.88.1 ...
- cx_Oracle.DatabaseError: ORA-28759: failure to open file
找了好久这个问题,有人说是tcps的问题,需要自己生成证书什么的,后来才发现原来是 钱包文件路径 的问题,钱包文件解压后必须放在instantclien/network/admin下,在Windows ...
- (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"
打开https://oracle.github.io/odpi/doc/installation.html 官方相关如下 Oracle Instant Client RPM¶ To run ODPI- ...
- windows10,redhat6.5下python3.5.2使用cx_Oracle链接oracle
0.序言 项目主要使用oracle但是我不太喜欢其他编程语言,加上可能需要用python部署算法包,从oracle表中读出数据,处理完成后在放回oracle中去,所以在windows上就想到先用pyt ...
- python使用cx_Oracle连接oracle
1.使用pip命令安装cx_Oracle $ pip install cx_Oracle 2.安装oracle客户端,并添加到path 下载路径: http://www.oracle.com/tech ...
- cx_Oracle连接数据库总结
python中连接oracle数据库使用第三方库文件cx_Oracle时遇到了各种问题,网上查找资料调试了几天才弄好,下面是不断调试后总结的一些经验.1.oracle客户端(Oracle Instan ...
- Python cx_Oracle问题处理
今天第一次使用Python连接Oracle数据库(多么可怕,三年码农没用Python手动连过Oracle) 首先: pip install cx_Oracle 好,安装完成,测试代码如下: from ...
- Python3安装cx_Oracle连接oracle数据库实操总结
弄清版本,最重要!!! 首先安装配置时,必须把握一个点,就是版本一致!包括:系统版本,python版本,oracle客户端的版本,cx_Oracle的版本,然后安装配置就容易了! 如果已经安装Pyth ...
- 第八篇:cx_Oracle出现的问题
1.cx_Oracle.DatabaseError: ORA-24315: illegal attribute type 2.cx_Oracle.InterfaceError: Unable to a ...
随机推荐
- hierarchical_mutex函数问题(C++ Concurrent in Action)
C++ Concurrent in Action(英文版)书上(No.52-No.53)写的hierarchical_mutex函数,只适合结合std::lock_guard使用,直接使用如果不考虑顺 ...
- linux删除文件夹下除了某一个文件之外的所有文件及find用法
原文: https://www.jb51.net/article/99319.htm 比如一个目录下有1,2,3,4,5这五个文件,现在我需要删除除了2以外的所有文件,那么我可以使用 find . ! ...
- BBC曝光:每天10000步,竟是商家的营销骗局
原文: https://new.qq.com/cmsn/20190112A14JRD00 导语:日本人平均每天行走3500-5000步,于是计步器公司就想,既然这么个数值大部分人都能达到,如果把平均值 ...
- Jmeter(九)JDBC连接池
JDBC为java访问数据库提供通用的API,可以为多种关系数据库提供统一访问.因为SQL是关系式数据库管理系统的标准语言,只要我们遵循SQL规范,那么我们写的代码既可以访问MySQL又可以访问SQL ...
- [UE4]世界坐标、本地坐标
本地坐标 世界坐标
- Round545div2B(1138B)
一.题目链接 https://codeforces.com/problemset/problem/1138/B 二.思路 贪心是肯定不行的. 设会$[1,0]$的人存在容器$p_1$里面,会$[0,1 ...
- vs code编辑器使用教程指南
1.安装插件: 这里可以搜索到插件并安装. 2.修改快捷键或查找快捷键: 这里可以进行快捷键的查找和修改 3.进入引用文件: 点击f12,或者右击快捷键可以看到进入引用文件的快捷方法. 4.查看目录:
- jscs sublime 插件配置 .jscsrc 文件
{ "disallowEmptyBlocks": true, "disallowKeywordsOnNewLine": ["else", & ...
- webpack 配置案例for angular babel
1.dev.js: const webpack = require('webpack'); const webpackUglifyJsPlugin = require('webpack-uglify- ...
- [Unity插件]Lua行为树(七):行为树嵌套
在上一篇的基础上,可以测试下行为树的嵌套,所谓的行为树嵌套,就是在一棵行为树下的某一个分支,接入另一棵行为树. 以下面这棵行为树为例: TestBehaviorTree2.lua TestBehavi ...