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Informatica Create a crash dump using “Debug Diag ”

Informatica Create a crash dump using “Debug Diag ”. HOW-TO | CIF CONSULT | Redouane BELBAHRI. Agenda. Terminology. 1. Terminology. ISP – Informatica Services Platform

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Informatica Create a crash dump using “Debug Diag ”

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  1. Informatica Create a crash dump using “Debug Diag” HOW-TO | CIF CONSULT | Redouane BELBAHRI

  2. Agenda Terminology 1

  3. Terminology • ISP – Informatica Services Platform • 9.x - The ISP is the administrative framework for Informatica services. It allows monitoring, start/stop, and failover of services • Model Repository Service (MRS) • Model Reposiory Service (MRS) manages the model Repositorywhichcontains the metadatafor Data Services. • Data Integration Service (DIS) • The Data Integration Service (DIS) is a container for all data integration functionalities. Plug-ins for the DIS provide different data integration functionalities.

  4. Terminology • Data Transformation Manager (DTM) • DTM Interprets and executes mappings. • It is re-engineered to be lightweight and embeddable. It allows repository-less execution: In previous versions of PowerCenter, DTM connects to the repository to fetch the plan. However, now the mapping can be run without reading from the repository, like mapping stored to disk. • DTM enables concurrent execution semantics: multiple DTM instances can coexist in the same process. • It allows different execution modes: single threaded and pipelined execution modes. • Profiling Service • The Profiling Service is a component integrated into Informatica Data Services. It includes the Profiling Plug-in and Profiling Warehouse.

  5. Terminology • Mapping Service Module • The Mapping Service Module is the component service in the Data Integration Service that manages requests to preview target data and run mappings. • SQL Service Module • The SQL Service Module is the component service in the Data Integration Service that manages SQL queries sent to an SQL data service from a third party client tool. • When the Data Integration Service receives an SQL request from a third party client tool, the SQL Service Module starts a DTM instance to run the SQL query against the virtual tables in the SQL data service.

  6. Terminology – Nodes and Domains • When you install and run the Informatica services, the installation is known as a node. The node becomes part of an Informaticadomain. A domain is a grouping of one or more nodes. • Domain Basics • The most basic description of an Informatica domain is this: There is a node, and there is a domain database. The node is where stuff runs. The database is where the node keeps stuff. • The Node • The node is a logical representation of the Informatica installation on a server. It is run by Apache Tomcat. • Two Kinds of Nodes: • WorkerNodes: A worker node runs a Service Manager process, and it can run application services. • Gateway Nodes: A gateway node can run application services, and it runs its own Service Manager Process. When you start the master gateway node, the management services log their startup progress to node.log and catalina.out. You can find both of these log files in INFA_HOME/tomcat/logs. • Master Gateway Node: Any gateway node can also be a master gateway node.

  7. Terminology – Nodes and Domains • Node Communication • The master gateway node is the one node in the domain that communicates with the domain database, and it does so through JDBC. It periodically performs a heartbeat check against the domain database.

  8. Following is the architectural diagram of Informatica 9.1 • Green components are added in Informatica 9.x • Blue components are fromexistingPowerCenter.

  9. Informatica 9.X Service-Oriented Architecture

  10. Agenda Log management 2

  11. Catalina.out & ispLogs.log • Catalina.out contains • Core services initial startup events • Tomcat’s ERROR + event until 9.1HF3 • ISP process’s stdout & stderr • ispLogs.log (introduced in 9.1HF3) • Tomcat’s ERROR + events in 9.1HF3 • Tomcat’s INFO + event until 9.1HF4+ • Not generated on windows • Logging level modified through isplogging.properties in ./tomcat/bin location

  12. Node.log • Contains • Master Election & Re-election • Someerrorsduringinter-node communication • Error severity Level controlled in AdminConsolefromNode’sproperties • WARNING by default. Change itto INFO for information of master re-election

  13. Exceptions.log • Logs exceptions faced in the ISP process • Any exception message seen in Node.log is typically logged with stack trace to exceptions.log

  14. ServiceFramework.log (until 9.1.x) • Tomcat/bin • JSF logs to this file. • All Mercury service processes, ISP process, Admin Console process write to the same • Critical for domain/node issues as it contains most critical errors • Isp/bin • Infacmd commands write to this file (infacmd generate this file in whichever directory you execute the command) • Contains errors related to infacmd to node/service communication.

  15. Domain Logs (exported from Adminconsole) • Contains some more log files by each node and domain • On missing heartbeat from node • When a service process terminated unexpectedly • When a service process wrote to stdout/stderr before crashing (stack trace)

  16. AdminConsole’s log files • Tomcat/temp/_AdminConsole/logs/* • Services/AdministratorConsole/Administrator.log

  17. Application Service Logs • ./tomcat/logs/MRS/<MRS_NAME>.log • ./tomcat/logs/as/analyst.log • ./tomcat/bin/disLogs/<DIS_NAME>.log

  18. Agenda Windows diagnostic tools 3

  19. Debug Diagnostic Tool • The Debug Diagnostic Tool (DebugDiag) is designed to assist in troubleshooting issues such as hangs, slow performance, memory leaks or fragmentation, and crashes in any user-mode process. The tool includes additional debugging scripts focused on Internet Information Services (IIS) applications, web data access components, COM+ and related Microsoft technologies. • Supported Operating System • Windows 7 • Windows 2003-Windows XP • Windows 2008-Windows Vista • Windows 2008 R2- Windows7

  20. Installation steps • The Installation is strait forwards.

  21. Create a stack trace from a hanging session or server process • When session or a server process hangs on Windows, use one of the following methods to obtain a stack trace and send it to Informatica technical support: • Determine the process ID (PID) of the hanging process • Dump the process stack

  22. Agenda Determine the process ID (PID) of the hanging process 4

  23. Introduction to Process Explorer • Process Explorer is a lot like Task Manager, which is the program you access via the following keys on your keyboard: "CTRL+ALT+DELETE". Task Manager is used to display process information such as the process name, memory usage and other application information. However, the information that Task Manager displays is rather limited compared to what Process Explorer can show you. With Process Explorer one can see the entire process tree for a particular applications, which consists of all other processes that were started by the original process, or parent, in the tree. • Process Explorer has many different uses such as examining what process are active and what processes are making connections to outside computers. In this guide I will demonstrate the kinds of information one can gleam from using Process Explorer as opposed to using task manager. • The tool can be downloaded for free from: http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

  24. Determine the process ID (PID) • Open Process Explorer • The top window always shows a list of the currently active processes • Highlight the process. The Services tab of the process properties dialog shows the list of services running within a process.

  25. Names of the PowerCenter, Data Quality and Data Explorer processes on Windows • When PowerCenter node is started up, you should see the below Tomcat Processes: • infasvcs.exe • Java.exe • If you start Informatica service from command line, then you may not see infasvcs.exe in the list. • pmserver.exe • This is the process for Integration Service • pmrepagent.exe • This is the process for Repository Agent, will show when Repository Service has started up. • pmdtm.exe • This is the session process started by the Integration Service.

  26. Names of the PowerCenter, Data Quality and Data Explorer processes on Windows • Data Explorer If you are using Data Explorer you will see the following processes: • Idelistener.exe • Ide_server.exe • Data Quality When Data Quality Server is running, you should see the following process from Task Manager: • ImplRepo_Service • Naming_Service • ImR_Activator

  27. Agenda Dump the process stack 5

  28. Using Debug Diag • Open Debug Diag and add a crash rule. • Select Crash

  29. Select the process ID • Select Target Type as A specific process • Select the process ID (Where PID is the process id obtained in the first step) and check This process instance only • Configure the following next parameters:

  30. Create a Rule • Add an event for Child Process Exit and set the Action Type to Full Userdump • 9.Save and close. • Click Next > Finish

  31. Achievements • Following is achieved after performing the steps above: • The Child process in this context is the process being debugged (pmserver), not its children. • When the debugged process exits, debug diag collects the full user dump. • Run crash analysis on the dump and collect the stack of the process during the time of its exit. • Core dump analysis can also be performed on the full user dump if required (space consuming)

  32. Crash/Hang Analyzers • If a crash occurs, open the Debug Diag and do as follows: • Click on Advanced Analysis • Click on Add Data Files • Browse to the location for the datafiles, and click Open • Once you have selected the datafile for the dump, click Start Analysis and send the report to Global Customer Support (GCS).

  33. Crash/Hang Analyzers • You can also right click the dump created dump file • Start Analysis and send the report to Global Customer Support (GCS).

  34. Using dump file generated by Dr Watson • Dr. Watson ( drwtsn32.exe ) is a default component of the Windows operating system.

  35. Crash/Hang Analyzers (from Dr Watson) • Once you have selected the datafile for th dump, click Start Analysis and send the report to Global Customer Support (GCS).

  36. java.lang.OutOfMemoryError: Java heap space • When a Java program starts, the Java Virtual Machine (JVM) gets some memory from the operating system. The JVM uses this memory for all its needs and part of this memory is called Java heap memory. When a Java application needs memory, the Java application gets it from Java Heap Space and when the object ceases to exist (garbage collected), the memory returns to Java Heap Space. • When JVM starts, JVM heap space is the initial size of Heap specified by the -Xms parameter. As the application progresses, objects are created and JVM expands Heap space in Java to accommodate new objects. JVM also runs garbage collector to reclaim memory back from objects that cease to exist. JVM expands Heap in Java close to the Maximum Heap Size specified by -Xmx and if there is no memory left for creating new objects in Java heap, JVM results in "java.lang.outofmemoryerror" and the application ends. • The default Heap size in Java is 128 MB. You can increase the size of Java Heap space based on what the Java application needs. To increase the Java heap space, use the parameters Xms (denotes starting size of Heap) and Xmx (denotes maximum size of Heap in Java).

  37. ANNEX

  38. Many Thanks for you time today!

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