Debugging the mod_jserv and the jsev

Question

Apps dbas,
Please pardon my ignorance.
What is the difference between debugging the mod_jserv and the jsev?
Confused abou the purpose of mod_jserv and jserv.
Thanks,
Lily

Answer 1

- To enable debug logging for mod_jserv:
a) AutoConfig, variable (s_apjservloglevel) change it to "debug", default value is "warn"
b) Manual update, modify $IAS_ORACLE_HOME/Apache/Jserv/etc/jserv.conf as follows:
ApJServLogLevel debug
mod_jserv.log file will be generated under $IAS_ORACLE_HOME/Apache/Jserv/logs
mod_jserv_log: Contains a record of messages and errors encountered by JServ (C-side).
- To enable debug logging for jserv:
a) AutoConfig, variable (s_oacorelog) change it to "true", default value is "false"
b) Manual update, modify $IAS_ORACLE_HOME/Apache/Jserv/etc/jserv.properties as follows:
log=true
log.channel=true
log.channel.info=true
log.channel.debug=true
jserv.log file will be generated under $IAS_ORACLE_HOME/Apache/Jserv/logs
jserv_log: Contains a record of messages and errors encountered by Java (Java-side).
The main configuration file for the servlet engine is called the engine properties file and is usually named jserv.properties. This file contains properties passed to the JVM, various options and security preferences, and a list of all servlet zones and their respective property files.
Q) What is the difference between jserv and jserv_mod?
A) Apache JServ is implemented as two separate components, one written in C and the other in Java:
The C side of Apache JServ, called mod_jserv, provides an interface between the Apache web server and the Java side. The module passes requests and information between the web server and the Java side and can also be used to automatically start and stop the JVM in which the Java side is executed.
The Java side of Apache JServ, called the Servlet Engine, implements the servlet API, and is where most of the functionality of Apache JServ resides. The Java side is, in fact, completely separate from the C side, the only link between them being the AJP. It is possible to attach the Java side to any web server, provided an appropriate communication module using AJP is written for the web server.
For more info about JServ, the following link should be helpful:
http://www.magiccookie.com/computers/apache-jserv/
HTH