47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
#------------------------------------------------------------------------------
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# DatabaseChangeNotification.py
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# This script demonstrates using database change notification in Python, a
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# feature that is available in Oracle 10g Release 2. Once this script is
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# running, use another session to insert, update or delete rows from the table
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# cx_Oracle.TestTempTable and you will see the notification of that change.
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#------------------------------------------------------------------------------
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from __future__ import print_function
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import cx_Oracle
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import threading
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import time
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def callback(message):
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print("Message type:", message.type)
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print("Message database name:", message.dbname)
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print("Message tables:")
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for table in message.tables:
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print("--> Table Name:", table.name)
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print("--> Table Operation:", table.operation)
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if table.rows is not None:
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print("--> Table Rows:")
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for row in table.rows:
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print("--> --> Row RowId:", row.rowid)
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print("--> --> Row Operation:", row.operation)
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print("-" * 60)
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print("=" * 60)
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connection = cx_Oracle.Connection("cx_Oracle/dev@localhost/orcl",
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events = True)
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sub = connection.subscribe(callback = callback, timeout = 1800, rowids = True)
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print("Subscription:", sub)
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print("--> Connection:", sub.connection)
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print("--> Callback:", sub.callback)
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print("--> Namespace:", sub.namespace)
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print("--> Protocol:", sub.protocol)
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print("--> Timeout:", sub.timeout)
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print("--> Operations:", sub.operations)
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print("--> Rowids?:", sub.rowids)
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sub.registerquery("select * from TestTempTable")
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while True:
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print("Waiting for notifications....")
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time.sleep(5)
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