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Problem IT37531
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Status: Closed |
DB2_HANG_DETECT SCRIPT MAY DETECT HANG INCORRECTLY AND KILL THE INSTANCE WITH ACTION=TERMINATE
|
| product: |
DB2 FOR LUW / DB2FORLUW / B50 - DB2 |
| Problem description: |
The db2_hang_detect script has a logic executing some monitor
commands like "list applications" in background mode and waiting
for its completion by checking the PID. If the command does not
end in a certain period, the script thinks it can be hanging and
kills the instance if ACTION=terminate. However, if the command
ends normally and another unrelated process in the system starts
with the same PID, db2_hang_detect thinks the command is still
running. Thus it may detect the hang incorrectly and kill the
instance. It can occur when the same PID is re-used within a
second and the process does not complete within the timeout
period. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to fixpack inclusive of this APAR fix. *
**************************************************************** |
| Local Fix: |
Using ACTION=INFORM instead of TERMINATE can prevent the
instance from being killed incorrectly |
| Solution |
|
| Workaround |
****************************************************************
* USERS AFFECTED: *
* All *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to fixpack inclusive of this APAR fix. *
**************************************************************** |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 07.07.2021
01.12.2021
01.12.2021 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
