36 lines
1.6 KiB
Python
36 lines
1.6 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# sharding_number_key.py
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# This script demonstrates how to use sharding keys with a sharded database.
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# The sample schema provided does not include support for running this demo. A
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# sharded database must first be created. Information on how to create a
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# sharded database can be found in the documentation:
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# https://www.oracle.com/pls/topic/lookup?ctx=dblatest&id=SHARD
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#
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# This script requires cx_Oracle 6.1 and higher but it is recommended to use
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# cx_Oracle 7.3 and higher in order to avoid a set of known issues when using
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# sharding capabilities.
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#------------------------------------------------------------------------------
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import cx_Oracle as oracledb
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import sample_env
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pool = oracledb.SessionPool(user=sample_env.get_main_user(),
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password=sample_env.get_main_password(),
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dsn=sample_env.get_connect_string(), min=1, max=5,
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increment=1)
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def connect_and_display(sharding_key):
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print("Connecting with sharding key:", sharding_key)
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with pool.acquire(shardingkey=[sharding_key]) as conn:
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cursor = conn.cursor()
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cursor.execute("select sys_context('userenv', 'db_name') from dual")
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name, = cursor.fetchone()
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print("--> connected to database", name)
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connect_and_display(100)
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connect_and_display(167)
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