Report server hanging

Question

Hi
Running Reports Server 9ias on win2000 box
Users are reporting that when running reports, application hangs
( 2/3 times a day in worst case )
Looking at windows event log, find out that timeouts are occurring
Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7011
Date: 14/02/2006
Time: 12:08:51
User: N/A
Computer: MOLLY2
Description:
Timeout (30000 milliseconds) waiting for a transaction response from the OracleReportServer-rep_molly service.
How do I determine what is causing the timeout ?
Can I increase the time out while trying to find the cause
Awaiting more info from Usera via their IT dept
Ian

Answer 1

If you look at showjobs for that Reports Server, what is the error from Oracle on the failing jobs? The URL will be like: http://server:port/reports/rwservlet/showjobs?server=<SERVERNAME>
I'm not quite sure how things are reported from Oracle into the OS Event Log and whether more important things are missing. Get that info & post if this doesn't help.
Also, I'd recommend that you push up your engines. Look at your CPU load, but if the reports aren't overly complex, changing maxEngine to 4 and minEngine to 2 and initEngine to two. This might help things in general and prevent one report from hanging up lots of other users. If the system is a little bogged down, change the maxEngine to at least 2. A fair rule of thumb is 2 - 4 engines per processor, but if you're not constantly running them on a server, even a large one, I woudn't go more than 4 personally.
Here is the default entry for a Reports Server from a Windows System. It is in the <REPORTS SERVER NAME>.conf file in ORACLE_HOME/reports/conf
<engine id="rwEng" class="oracle.reports.engine.EngineImpl" initEngine="1" maxEngine="1" minEngine="0" engLife="50" maxIdle="30" callbackTimeOut="90000">