SQLError: (2014, "Commands out of sync; You can't run this command now")

[JZ]

I have problems with many concurrent request for Webware. I get the
error:

SQLError: (2014, "Commands out of sync;  You can't run this command
now")

MyDB.py
=======
from MyDBPool import datapool
class MyDB(Config):
    def __init__(self):        
        self.conn = None
        self.cursor = None
        self.rowcount = 0
        
    def dbConnect(self):
        self.conn = datapool.getConnection()
        self.cursor = self.conn.cursor()
        
    def dbDisconnect(self):
        if self.cursor:
            self.cursor.close()
        if self.conn:
            self.conn.close()

    def execute(self, sql):
        self.dbConnect()
        self.rowcount = self.cursor.execute(sql)
        self.dbDisconnect()
        return self.rowcount
#...

MyDBPool.py:
==========
# inspired from 
#http://sourceforge.net/mailarchive/forum.php?thread_id=2693193&forum_id=3505
from Config import Config
import MySQLdb, MySQLdb.cursors
from MiscUtils.DBPool import DBPool
datapool = DBPool(MySQLdb, 20, host=Config.dbHost, user=Config.dbUser,
		 passwd=Config.dbPasswd, db=Config.dbName , compress=0,
		 cursorclass=MySQLdb.cursors.DictCursor) 


I do not know how to fix it. I tried change above method to:

    def execute(self, sql):
        _cache_lock = thread.allocate_lock()
        _cache_lock.acquire()
        self.dbConnect()
        self.rowcount = self.cursor.execute(sql)
        self.dbDisconnect()
        _cache_lock.release()
        return self.rowcount

But it could not help. :(

--
JZ ICQ:6712522