The biggest pain comes to Informatica Administrators when a domain
goes down or a domain crash happens without any possible errors popping up.
Below are the couple of quick checks which needs to be taken up whenever you come across
this situation.
- A gate way node is an entry point to the domain in the power center, Any node in the #GRID can serve as a gateway node but at any point of time one node will serve as a master gate way node which holds the application services (Repository Service, Integration Service, Service Manager, Adminconsole).
- As a result host n port in the Adminconsole URL (https://hostname:posrt/administrator/) represents the host name of the master gateway node & the adminconsole port number.
- Always the Master gate way node should be started first which serves as primary node which holds Repository service on it and then the backup nodes have to be started.
- Integration
service always runs on all the available nodes in order to dispatch the
tasks across the nodes.
- All the other #gateway node or #backup nodes communicates to domain through the Master
Gateway node.
- Whenever the domain issue comes up please analyze the following logs (node.log & exception.log).
- When #JVM is
unable to extend it’s virtual memory for object creation you would see the domain crash in Informatica. By default
virtual memory is set to 512 MB in $INFA_HOME/tomcat/bin/infaservice.sh
script .You'll have to increase the Virtual memory allocation to 1
(1024 MB) GB or 2 GB (2048 MB) ex : INFA_JAVA_OPTS="-Xmx512m"
edit this to INFA_JAVA_OPTS="-Xmx1024m".
- This issue also
occurs when there is connectivity issue with the database as we are on the service oriented architecture (#SOA), Data bases (Domain/Rep) will be hosted on another servers. So please verify the connectivity by using the sqlplus
user_name/password@db_name.
- Check the #NAS
mount latency whether it’s mounted & connecting fine to Informatica server.
- Check the number
of process running on each of the nodes it shouldn’t exceed the number set
in Adminconsole.
- One
of the most major domain hung issue is with the number of open file
descriptors. You can increase the maximum number of open file descriptors on the OS (Unix/Linux) by using the ulimit command.
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