30 lines
1000 B
Python
30 lines
1000 B
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# QueryArraysize.py
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#
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# Demonstrate how to alter the array size on a cursor in order to reduce the
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# number of network round trips and overhead required to fetch all of the rows
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# from a large table.
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#------------------------------------------------------------------------------
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import time
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import cx_Oracle
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import SampleEnv
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connection = cx_Oracle.connect(SampleEnv.GetMainConnectString())
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start = time.time()
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cursor = connection.cursor()
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cursor.arraysize = 1000
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cursor.execute('select * from bigtab')
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res = cursor.fetchall()
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# print(res) # uncomment to display the query results
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elapsed = (time.time() - start)
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print("Retrieved", len(res), "rows in", elapsed, "seconds")
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