Tag Archives: WebCache

Oracle Portal Performance

This note apply to Oracle Portal in HA environment and linux S.O. In the webcache event.log file , continuously this message is shown : [warning 11366] [ecid: xxxxxx] A client connection to listening port 80 is dropped. If the mandatory patches was applied and portal performance is really slow, follow bellow : This note […]

How to invalidate pages in Webcache using database procedure

To invalidate dynamic pages in the webcache, you need send an XML file with the URL of the pages that you want to invalidate to web cache The advantage to use database procedure to invalidate is that should be invalidated as soon as the data in the database is updated. The better way is create […]


This case is when we try to install the SERPRO trusted certificate “ACSERPROv2.cer” . This error is one BUG in OWM (Oracle Wallet Manager) follow bellow the solution :   1. Download patch 7352022 from metalink   2. Unzip the patch (e.g: linux) : unzip p7352022_10105_LINUX.zip   3. Apply the patch stopping the OAS: cd 7352022 […]

Tuning Linux OS Kernel Parameters for Oracle WebCache

This note is to increase the kernel parameters for better performance in tcp connection on Linux red-hat. First of all verify the system requirements to install WebCache in oracle.com, and check other required parameters like “kernel.sem” and  “kernel.shmall”. Tuning: Add in /etc/sysctl.conf net.ipv4.nonlocal_bind = 1 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_max_tw_buckets = 2000000 net.ipv4.tcp_sack = 0 net.ipv4.tcp_window_scaling […]