35 lines
1.5 KiB
Python
35 lines
1.5 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# ShardingNumberKey.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
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import SampleEnv
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pool = cx_Oracle.SessionPool(SampleEnv.GetMainUser(),
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SampleEnv.GetMainPassword(), SampleEnv.GetConnectString(), min=1,
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max=5, increment=1)
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def ConnectAndDisplay(shardingKey):
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print("Connecting with sharding key:", shardingKey)
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with pool.acquire(shardingkey=[shardingKey]) 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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ConnectAndDisplay(100)
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ConnectAndDisplay(167)
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