Hello Fajar, thanks for your rapid response!

...

simul_count_query = "SELECT COUNT(*) \ FROM ${acct_table1} \ WHERE username = '%{SQL-User-Name}' \ AND acctstoptime IS NULL"

it uses ${acct_table1} (should be radacct by default). Have you enabled accounting?

Yes, the accounting is working. It is some field listed from radacct table: mysql> select radacctid,acctsessionid,username,nasipaddress,nasporttype,acctstarttime,acctstoptime,acctinputoctets,acctoutputoctets from radacct where username="hz00001"; +-----------+---------------+----------+---------------+-----------------+---------------------+---------------------+-----------------+------------------+ | radacctid | acctsessionid | username | nasipaddress | nasporttype | acctstarttime | acctstoptime | acctinputoctets | acctoutputoctets | +-----------+---------------+----------+---------------+-----------------+---------------------+---------------------+-----------------+------------------+ | 3 | 80600002 | hz00001 | 172.16.2.246 | Wireless-802.11 | 2010-01-28 12:47:46 | 2010-01-28 12:50:37 | 21399 | 51376 | | 4 | 80600003 | hz00001 | 172.16.2.246 | Wireless-802.11 | 2010-01-29 17:42:58 | 2010-01-29 17:45:17 | 20811 | 50802 | | 160 | 80800010 | hz00001 | 172.17.2.246 | Wireless-802.11 | 2010-02-08 17:54:56 | 2010-02-08 17:56:01 | 18320 | 35545 | | 161 | 80800011 | hz00001 | 172.17.2.246 | Wireless-802.11 | 2010-02-08 17:56:26 | 2010-02-08 18:18:37 | 590798 | 2356358 | | 183 | 80400003 | hz00001 | 172.17.2.246 | Wireless-802.11 | 2010-02-09 13:48:52 | 2010-02-09 13:49:07 | 9573 | 10237 | | 189 | 80b00007 | hz00001 | 172.17.2.246 | Wireless-802.11 | 2010-02-09 15:21:20 | 2010-02-09 15:21:26 | 8474 | 8869 | | 230 | 80600000 | hz00001 | 172.17.2.246 | Wireless-802.11 | 2010-02-10 15:44:02 | 2010-02-10 15:46:52 | 580051 | 896533 | +-----------+---------------+----------+---------------+-----------------+---------------------+---------------------+-----------------+------------------+

...

mysql> select * from radcheck; +----+----------+---------------+----+------------+ | id | UserName | Attribute | op | Value | +----+----------+---------------+----+------------+ | 1 | hz00001 | user-password | == | Tfregep5uy |

what does radacct look like? What's the result of (for example)

SELECT COUNT(*) \ FROM radacct \ WHERE username = 'hz00001' \ AND acctstoptime IS NULL;

mysql> SELECT COUNT(*) FROM radacct WHERE username = 'hz00001' AND acctstoptime IS NULL; +----------+ | COUNT(*) | +----------+ | 1 | +----------+ regards, fbi