42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# call_timeout.py
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#
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# Demonstrate the use of the Oracle Client 18c feature that enables round trips
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# to the database to time out if a specified amount of time (in milliseconds)
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# has passed without a response from the database.
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#
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# This script requires cx_Oracle 7.0 and higher and Oracle Client 18.1 and
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# higher.
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#------------------------------------------------------------------------------
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import cx_Oracle as oracledb
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import sample_env
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connection = oracledb.connect(sample_env.get_main_connect_string())
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connection.call_timeout = 2000
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print("Call timeout set at", connection.call_timeout, "milliseconds...")
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cursor = connection.cursor()
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cursor.execute("select sysdate from dual")
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today, = cursor.fetchone()
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print("Fetch of current date before timeout:", today)
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# dbms_session.sleep() replaces dbms_lock.sleep() from Oracle Database 18c
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sleep_proc_name = "dbms_session.sleep" \
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if int(connection.version.split(".")[0]) >= 18 \
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else "dbms_lock.sleep"
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print("Sleeping...should time out...")
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try:
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cursor.callproc(sleep_proc_name, (3,))
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except oracledb.DatabaseError as e:
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print("ERROR:", e)
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cursor.execute("select sysdate from dual")
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today, = cursor.fetchone()
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print("Fetch of current date after timeout:", today)
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