Facing issues with db2diag.log + database

Hi all,

In our setup db2V9.7 with fixpack 4

Facing space issues under root level:
============================

root space is allocated upto 67GB.

Instance with the name of db2inst2 is created under home directory and home directory belongs to root.

under db2inst2 four database are created with the name of XXX, XXX, XXX, XXX

Previously database with the name of CN was created, and dropped as well.

Regularly we are facing issues with root space full due to db2inst2.

Under db2inst2 db2diag.log occupies nearly 50GB overthis. Even i removed the log file also, but keep on increasing regularly.

But db2diag.log saying that it's trying to connect the database CN..(Note: CN database was dropped)

db2diag.log
==========

created (see this record's time stamp)

2012-11-21-22.03.54.614673+660 I1624E738 LEVEL: Warning
PID : 32419 TID : 47752092313920PROC : db2sysc 0
INSTANCE: db2inst2 NODE : 000
APPHDL : 0-61771
EDUID : 145 EDUNAME: db2agent () 0
FUNCTION: DB2 UDB, Connection Manager, sqleUCgetDirInfo, probe:1012
DATA #1 : SQLCA, PD_DB2_TYPE_SQLCA, 136 bytes
sqlcaid : SQLCA sqlcabc: 136 sqlcode: -1013 sqlerrml: 2
sqlerrmc: CN
sqlerrp : SQLEUCCM
sqlerrd : (1) 0x00000000 (2) 0x00000000 (3) 0x00000000
(4) 0x00000000 (5) 0x00000000 (6) 0x00000000
sqlwarn : (1) (2) (3) (4) (5) (6)
(7) (8) (9) (10) (11)
sqlstate:



Could you please help me, why it's creating the log files for CN? Any how the database is not under the db2inst2?

Please give the suggestion over this issue?

Thanks,
laxman..