Hi Team,
I am using connection pooling in sqlalchemy using oracle own pool.My script
looks like this.
```
from sqlalchemy import create_engine,text
from sqlalchemy.pool import NullPool
import oracledb
pool = oracledb.create_pool(user='XXX', password='XXX',dsn='XXX:1521/XXX',
min=1, max=5, increment=1)
def creator():
return pool.acquire(cclass="MYAPP",purity=oracledb.PURITY_SELF)
engine = create_engine("oracle+oracledb://", creator=creator,
poolclass=NullPool)
conn = engine.connect()
result = (conn.execute(text("select current_timestamp from dual")))
for row in result: #first query
print(row)
conn.close()
conn = engine.connect()
result = (conn.execute(text("select current_timestamp from dual")))
for row in result: #second query
print(row)
conn.close()
```
Here the first query in running perfectly when the second time when i am
doing it then it is rasing the folowing error
sqlalchemy.exc.DatabaseError: (oracledb.exceptions.DatabaseError) DPY-4011:
the database or network closed the connection
Why is this issue coming.
Is it because of conn.close(). Here the conn.close() is not releasing
connection back to the pool.
Thanks
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