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Collecting data for an IDS engine hang on LINUX platforms

Question & Answer


Question

What information should be collected when you experience a performance problem with your software? Collect data using the script provided here. Collecting this information before calling IBM support will help you understand the problem and save time analyzing the data.

Answer



Collecting data for diagnosing engine hangs on versions 11.70.xC1 and later


In versions of the Informix Server engine 11.70.xC1 and above ifxcollect can be used to gather diagnostic information without utilizing the onstats.sh script. To gather the information execute the following command while experiencing the engine hang:

$INFORMIXDIR/bin/ifxcollect -c performance -s general

Executing ifxcollect will create a tar file in $INFORMIXDIR/isa/data that can be uploaded to IBM for review. The format of the file is ifxcollect.<timestamp>.tar. Uploading the file can be accomplished using any of the methods described in the "Submitting information to IBM Support section".

For additional information on ifxcollect see the following link:

Collecting data with the ifxcollect tool

Collecting information for versions prior to 11.70.xC1

For all versions of Informix Server prior to 11.70.xC1, gather the following information for any problem:

General Information to collect for Informix Family product problems

For all versions of Informix Server prior to 11.70.xC1 gather the following information during the engine hang:

Before continuing, confirm that onstat commands will execute by entering this command: onstat -g ath. If the command does not return quickly, do not continue with any of the instructions below. Contact IBM Informix technical support.
  1. Copy onstats_linux.zip (attached below) to your system. Do all transfers in binary mode.
  2. Follow the instructions in the README file.
  3. After you have run the script, execute onstat -o to collect a shared memory dump. The shared memory dump will be in a file named onstat.out

Submitting information to IBM Support


Once you have collected your information, you can begin Problem Determination through the product Support web page, or simply submit the diagnostic information to IBM support.

You can submit files using one of following methods to help speed problem diagnosis:
  • IBM Support Assistant (ISA)
  • Electronic Service Request (ESR)
  • FTP to the Enhanced Customer Data Repository (ECuRep)

See the Related information article, Submitting diagnostic information to IBM Technical Support for problem determination.

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Document Information

Modified date:
03 June 2021

UID

swg21269124