logrotate has been done. and it is working fine.
[Expert@FW_01:4]# ll -th
total 128M
-rw-rw---- 1 admin root 1.7M Dec 20 13:44 access_log
-rw-rw---- 1 admin root 8.5M Dec 20 13:44 error_log
-rw-rw---- 1 admin root 11M Dec 20 13:41 access_log.1
-rw-rw---- 1 admin root 11M Dec 20 13:26 access_log.2
-rw-rw---- 1 admin root 11M Dec 20 13:11 access_log.3
-rw-rw---- 1 admin root 11M Dec 20 12:55 access_log.4
-rw-rw---- 1 admin root 11M Dec 20 12:40 access_log.5
-rw-rw---- 1 admin root 11M Dec 20 12:26 access_log.6
-rw-rw---- 1 admin root 11M Dec 20 12:11 access_log.7
-rw-rw---- 1 admin root 11M Dec 20 11:56 access_log.8
-rw-rw---- 1 admin root 11M Dec 20 11:41 access_log.9
-rw-rw---- 1 admin root 12M Dec 20 11:26 access_log.10
-rw-rw---- 1 admin root 11M Dec 20 10:31 error_log.1
-rw-r--r-- 1 admin root 7 Dec 20 09:09 httpd.pid
[Expert@FW_01:4]#
my issue is /opt/CPNacPortal/CTX/CTX00004/session file is continuously increasing. after deleting the logs the file is deleted and once users logs in it is created and file size is increasing.