59 lines
2.0 KiB
Python
59 lines
2.0 KiB
Python
# ------------------------------------------------------------------------------
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# connect_pool2.py (Section 2.2 and 2.4)
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# ------------------------------------------------------------------------------
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# ------------------------------------------------------------------------------
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# Copyright (c) 2017, 2022, Oracle and/or its affiliates.
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#
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# This software is dual-licensed to you under the Universal Permissive License
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# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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# 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
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# either license.
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#
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# If you elect to accept the software under the Apache License, Version 2.0,
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# the following applies:
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ------------------------------------------------------------------------------
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import oracledb
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import threading
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import db_config
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pool = oracledb.create_pool(user=db_config.user, password=db_config.pw, dsn=db_config.dsn,
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min=2, max=5, increment=1, getmode=oracledb.POOL_GETMODE_WAIT)
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def Query():
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con = pool.acquire()
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cur = con.cursor()
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for i in range(4):
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cur.execute("select myseq.nextval from dual")
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seqval, = cur.fetchone()
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print("Thread", threading.current_thread().name,
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"fetched sequence =", seqval)
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number_of_threads = 2
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thread_array = []
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for i in range(number_of_threads):
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thread = threading.Thread(name='#' + str(i), target=Query)
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thread_array.append(thread)
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thread.start()
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for t in thread_array:
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t.join()
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print("All done!")
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