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#------------------------------------------------------------------------------
# connect_pool2.py (Section 2.5)
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# Copyright (c) 2017, 2021, Oracle and/or its affiliates. All rights reserved.
#------------------------------------------------------------------------------
import cx_Oracle
import threading
import time
import db_config
pool = cx_Oracle.SessionPool(db_config.user, db_config.pw, db_config.dsn + ":pooled",
min = 2, max = 5, increment = 1, threaded = True,
getmode = cx_Oracle.SPOOL_ATTRVAL_WAIT)
def Query():
con = pool.acquire(cclass="PYTHONHOL", purity=cx_Oracle.ATTR_PURITY_SELF)
#con = pool.acquire(cclass="PYTHONHOL", purity=cx_Oracle.ATTR_PURITY_NEW)
cur = con.cursor()
for i in range(4):
cur.execute("select myseq.nextval from dual")
seqval, = cur.fetchone()
print("Thread", threading.current_thread().name, "fetched sequence =", seqval)
#time.sleep(1)
numberOfThreads = 5
threadArray = []
for i in range(numberOfThreads):
thread = threading.Thread(name='#'+str(i), target=Query)
threadArray.append(thread)
#time.sleep(4)
thread.start()
for t in threadArray:
t.join()
print("All done!")
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