ACF10 uses the isapi_redirect.dll for connecting Tomcat to IIS which is
an open-source connector developed by the good folks in the Tomcat
project. The error message is coming from the connector, so what you can
do is enable logging on the connector and it should tell you what the
problem is.
You can enable logging (or set the logging level to a be more
informative) by editing the connector properties file, usually located here:
{CF-HOME}\config\wsconfig\{magic-number}\isapi_redirect.properties
Specifically, look for the following entries:
log_file = {CF-HOME}\config\wsconfig\{magic-number}\isapi_redirect.log
log_level = info
If the default log_level of "info" doesn't indicate anything in the
logs, try setting the level higher. Appropriate values are documented here:
http://tomcat.apache.org/connectors-doc/reference/iis.html
... but chances are good the problem is already being logged.
If I had to guess, I would say you're bumping up against the default
"connection_pool_size" which unfortunately defaults to 250 for IIS. I've
seen this limit hit frequently on even low-use windows machines.
The connection_pool_size attribute can be configured in the
workers.properties file, located here by default:
{CF-HOME}\config\wsconfig\{magic-number}\
The connection_pool_size attribute is documented here:
http://tomcat.apache.org/connectors-doc/reference/workers.html
And you can read about manually installing the connector for ACF10 here:
http://helpx.adobe.com/coldfusion/kb/coldfusion10-iis-manual-connector-configuration.html
Hope this helps John! =)
Warm Regards,
Jordan Michaels
On 04/22/2013 06:23 PM, John M Bliss wrote:
>
> Since upgrading from ACF8 to ACF10, every once in a while (about once every
> 2-3 days?), under normal load, all .cfm reqs produce:
>
> Service Temporary Unavailable!
>
> The server is temporarily unable to service your request due to maintenance
> downtime or capacity problems. Please try again later.
>
> Jakarta/ISAPI/isapi_redirector/1.2.32 ()
>
> Copyright © 1999-2011 Apache Software Foundation
> All Rights Reserved
>
> ...I'm using IIS. Restarting the CF Server service makes the problem go
> away.
>
> Ideas?
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