ProblemCustomer has noticed large (for example 8Gb) files being created on the Controller application server. - Typically these files end in a DMP file extension. What are these files? Can their location be changed? Can they be safely deleted?SymptomCustomer notices that files with the extension DMP, PHD, TRC and TXT appear (over time) in some folder(s) on the Controller application server. Some of these files (especially the CORE / DMP files) can be very large.The file names will vary depending on what portion of the Controller architecture fails.Example: TM1 (FAP) dump files will look similar to: HEAPDUMP.xxxxyyyyzzzz.phd JAVACORE.xxxxyyyyzzzz.txt CORE.xxxxyyyyzzzz.dmp SNAP.xxxxyyyyzzzz.trcCognos BI dump files will look similar to: BIBusTKServerMain_seh_3524_3208.dmpResolving The ProblemQuestion - What are these files?Answer: The files are the diagnostic output which are automatically created when an IBM JAVA process fails/crashes.==================================Question - Can their location be changed?Answer: Yes.There are different possible methods. Choose the method that best suits your needs:(1) Create/modify the System Variable(s) - recommended for most situations.Probably the easiest/simplest method is to create/use System Variables. For more information, see separate IBM Technote #1693195. (2) Use the Tomcat Java configuration utility - for TM1If the crash is coming from TM1Web, then a different method is to use the Tomcat Java configuration utility, and then modify the Java settings tab. For more information, see separate IBM Technote #1968185.==================================Question - Can they be safely deleted?Answer: In most cases, yes. The only reason to keep them is to send them to IBM Support to help diagnose issues (in other words, to understand why the system crashed in the first place - which led to the creation of those files).==================================Question - Can dump file creation be disabled?Answer: It is possible to disable dump file creation for the Cognos BI engine.Steps:1. Logon to the server where IBM Cognos BI engine is installed For most customers, this is the Controller application server.2. Browse to the folder ' configuration' TIP: This will be in a similar location to here: C:\Program Files\IBM\cognos\ccr_64\configuration3. Edit the following file: cclWinSEHConfig.xml4. Locate a section similar to the following: <configuration> <env_var name="CCL_HWE_ABORT" value="2:2"/> </configuration>5. Modify the value of the environment variable setting to 0 (zero) so that it looks similar to: <env_var name="CCL_HWE_ABORT" value="0"/>6. Save the file.7. Restart the system, and test.
https://www-01.ibm.com/support/docview.wss?uid=swg21990831ZitatProblemCustomer has noticed large (for example 8Gb) files being created on the Controller application server. - Typically these files end in a DMP file extension. What are these files? Can their location be changed? Can they be safely deleted?SymptomCustomer notices that files with the extension DMP, PHD, TRC and TXT appear (over time) in some folder(s) on the Controller application server. Some of these files (especially the CORE / DMP files) can be very large.The file names will vary depending on what portion of the Controller architecture fails.Example: TM1 (FAP) dump files will look similar to: HEAPDUMP.xxxxyyyyzzzz.phd JAVACORE.xxxxyyyyzzzz.txt CORE.xxxxyyyyzzzz.dmp SNAP.xxxxyyyyzzzz.trcCognos BI dump files will look similar to: BIBusTKServerMain_seh_3524_3208.dmpResolving The ProblemQuestion - What are these files?Answer: The files are the diagnostic output which are automatically created when an IBM JAVA process fails/crashes.==================================Question - Can their location be changed?Answer: Yes.There are different possible methods. Choose the method that best suits your needs:(1) Create/modify the System Variable(s) - recommended for most situations.Probably the easiest/simplest method is to create/use System Variables. For more information, see separate IBM Technote #1693195. (2) Use the Tomcat Java configuration utility - for TM1If the crash is coming from TM1Web, then a different method is to use the Tomcat Java configuration utility, and then modify the Java settings tab. For more information, see separate IBM Technote #1968185.==================================Question - Can they be safely deleted?Answer: In most cases, yes. The only reason to keep them is to send them to IBM Support to help diagnose issues (in other words, to understand why the system crashed in the first place - which led to the creation of those files).==================================Question - Can dump file creation be disabled?Answer: It is possible to disable dump file creation for the Cognos BI engine.Steps:1. Logon to the server where IBM Cognos BI engine is installed For most customers, this is the Controller application server.2. Browse to the folder ' configuration' TIP: This will be in a similar location to here: C:\Program Files\IBM\cognos\ccr_64\configuration3. Edit the following file: cclWinSEHConfig.xml4. Locate a section similar to the following: <configuration> <env_var name="CCL_HWE_ABORT" value="2:2"/> </configuration>5. Modify the value of the environment variable setting to 0 (zero) so that it looks similar to: <env_var name="CCL_HWE_ABORT" value="0"/>6. Save the file.7. Restart the system, and test.