Install cxOracle on Windows These installation instructions assume that you are on 64-bit Windows and have a Windows x64 Oracle 11gR2 database running on your machine. The Oracle database can be on any edition of Oracle (Express, Standard, Enterprise).

• Cx_oracle Python Examples
• Cx_oracle Python Documentation
• Cx Oracle Python Install

This tutorial shows you how use the Python cx_Oracle interface on Windows to connect applications to Oracle Autonomous Database (ADB). Follow the steps below.

1. Provision an ADB Instance

• The mapping between Python and Oracle objects is handled in SDOInConverter which uses the cxOracle newobject and extend methods to create an Oracle object from the Python object values. The SDOInConverter method is called by the input type handler SDOInputTypeHandler whenever an instance of mySDO is inserted with the cursor.
• Python interface to Oracle Database conforming to the Python DB API 2.0 specification. oracle/python-cxOracle.

Click on the links below to walk through these steps if you have not yet provisioned an ADB instance. Remember the ADMIN password. You will use this to connect Python to ADB.

• Create an Oracle cloud account.
• Provision an ADB instance.

You may select the Always Free option to use the Always Free Oracle ADB. Choose the Shared Infrastructure deployment type.

2. Obtain Client Credentials

Below are the instructions to download the client credentials from the Oracle Cloud Console. The credentials give mutual TLS, providing enhanced security for authentication and encryption.

• From the Oracle Cloud Console, go to the Autonomous Database Details page of your Oracle Autonomous Database instance.
• Click the DB Connection button.

• A new window will appear. Click the Download Wallet button.

• Enter a wallet password in the Password field and confirm the password in the Confirm password field. Then, click the Download button. The password must be at least 8 characters long and include at least 1 letter and either 1 numeric character or 1 special character. Although not required for Python, this password protects the downloaded client credentials wallet.

• Save the credentials zip file to a secure location.

3. Install Python

Install Python 3.

The steps below assume you installed Python x86-64, but 32-bit Python can also be used. Best torrent client pia.

4. Install cx_Oracle

Install cx_Oracle:

For further assistance and options, such as for installing behind an HTTP proxy, see Installing cx_Oracle on Windows.

5. Install the Oracle Instant Client Basic Package

Download the free Oracle Instant Client Basic zip file from Oracle Instant Client for Microsoft Windows (x64) 64-bit. (If your Python is 32-bit, then you will need to download the 32-bit Basic package from here instead). Remember to install the matching VS Redistributable, as shown on the download page.

Extract the libraries to an accessible directory, for example the libraries could be in C:oracleinstantclient_19_9

6. Unzip the Wallet

Make a networkadmin sub-directory in your Instant Client directory, for example C:oracleinstantclient_19_9networkadmin.

Unzip the previously obtained credentials zip file and move the extracted files to the new networkadmin sub-directory.

7. Create a Python Application

• Using your favorite text editor, create a new Python file example.py in a directory of your choice. It should contain the following code. Make sure the indentation is the same as shown:

• Modify example.py and set the appropriate path to your Instant Client directory in the init_oracle_client() call.
• Modify example.py to use your ADB connection information in the cx_Oracle.connect() call:
  • User: Use admin which is the user created by default during the creation of Autonomous Database. (If you created another ADB user, you can use that user instead.)
  • Password: Use the database user's password. If connecting as the admin user, set this to the password you chose during the Create Autonomous Database step while provisioning Autonomous Database.
  • Data Source Name (DSN): Use a net service name such as DBName_high. DBName is the Database Name entered during the Create Autonomous Database step while provisioning Autonomous Database. The available net service names can be seen in the wallet tnsnames.ora file.
• Save the changes to example.py.

Cx_oracle Python Examples

8. Run the Python Application

Run the app:

You will see the queried rows returned from the database. Congratulations! You have successfully used Oracle Autonomous Database.

Note: If you connect to ADB from behind a firewall, you will likely encounter a connection timeout error. Update the tnsnames.ora file to use an HTTP proxy. Learn how to do this in this ADB documentation section. Scroll down to the 'Connections with an HTTP Proxy' section on the doc page.

Cx_oracle Python Documentation

Features

Cx Oracle Python Install

• Easily installed from PyPI.

• Support for Python 3.6 and higher. Older versions of cx_Oracle may be used with previous Python releases.

• Support for Oracle Client 11.2, 12, 18, 19 and 21. Oracle's standard cross-version interoperability, allows easy upgrades and connectivity to different Oracle Database versions.

• Connect to Oracle Database 9.2, 10, 11, 12, 18, 19 or 21 (depending on the Oracle Client version used).

• SQL and PL/SQL Execution. The underlying Oracle Client libraries have significant optimizations including compressed fetch, pre-fetching, client and server result set caching, and statement caching with auto-tuning.

• Full use of Oracle Network Service infrastructure, including encrypted network traffic and security features.

• Extensive Oracle data type support, including large object support (CLOB and BLOB).

• Direct binding to SQL objects. One great use case is binding Python objects to Oracle Spatial SDO objects.

• JSON datatype support.

• SODA (Simple Oracle Document Access).

• Array operations for efficient INSERT and UPDATEs.

• Array row counts and batch error handling for array operations.

• Fetching of large result sets.

• REF CURSOR support.

• Support for scrollable cursors. Go back and forth through your query results.

• Fetch PL/SQL Implicit Results. Easily return query results from PL/SQL.

• Minitool partition wizard full turkce. Row Prefetching. Efficient use of the network.

• Client Result Caching. Improve performance of frequently executed look-up statements.

• Support for Advanced Queuing. Use database notifications to build micro-service applications.

• Apowersoft screen recorder full version free download. Continuous Query Notification (CQN). Get notified when data changes.

• Support for Edition Based Redefinition. Easily switch applications to use updated PL/SQL logic.

• Support for setting application context during the creation of a connection, making application metadata more accessible to the database, including in LOGON triggers.

• End-to-end monitoring and tracing.

• Transaction Management.

• Session Pooling, with tagging and session state fix-up callback.

• Database Resident Connection Pooling (DRCP).

• Privileged Connections.

• External Authentication.

• Database startup and shutdown.

• Sharded Databases.

• Oracle Database High Availability Features, such as FAN notifications, Application Continuity, and Transaction Guard support.

DB API specification exclusions: The time data type is not supported by Oracle and is therefore not implemented. The method cursor.nextset() is not implemented either as the DB API specification assumes an implementation of cursors that does not fit well with Oracle's implementation of cursors and implicit results. See the method cursor.getimplicitresults() for more information.