|
Problem IC69636
|
Status: Closed |
DB2TRC MAY HANG ENGINE WHEN IT IS INVOKED VIA A SCRIPT |
| product: |
DB2 FOR LUW / DB2FORLUW / 980 - DB2 |
| Problem description: |
db2trc may hang engine when it is invoked via a script.
Reason for hang
When you issue "db2trc -f <filename>" to trace to a file, a
background daemon process is started to act as the trace record
writer process. When db2trc is turned on from within a script,
the daemon process still has an association back to the script
process. So, when CTRL-C was issued against the script, that
CTRL-C got propagated to the trc daemon process as well and so
it terminated too. Now since the trace record writer process is
gone, all DB2 processes which still want to write out trace
records end up waiting forever to write a buffer that no longer
exists. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* When you issue "db2trc -f <filename>" to trace to a file, a *
* background daemon process is started to act as the trace *
* record *
* writer process. When db2trc is turned on from within a *
* script, the daemon process still has an association back to *
* the script *
* process. So, when CTRL-C was issued against the script, *
* that CTRL-C got propagated to the trc daemon process as well *
* and so *
* it terminated too. Now since the trace record writer *
* process is gone, all DB2 processes which still want to write *
* out trace *
* records end up waiting forever to write a buffer that no *
* longer exists. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to V10. *
**************************************************************** |
| Local Fix: |
Do a "db2trc off" at any command prompt first and then CTRL-C
the script after it is confirmed that db2trc is off. |
| Solution |
|
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 01.07.2010
06.04.2011
06.04.2011 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
