Universe.log can grow up to a size way bigger than what is set for log rotation

Products

• CA Automic Dollar Universe

Issue/Introduction

IO is unable to rotate universe.log, then, universe.log can grow up to a size way bigger than what is set for log rotation.

The following Error Message can be seen in the universe.log : 
#######################
|ERROR|S|IO |pid=7060.6284| o_log_analyze | unable to rename log file to c:\orsyp\DUAS\WRP0DEX\log\universe.log_2013040206070400
####################### 

Environment

OS: Windows
OS Version: All supported.

Cause

Cause type: Configuration
Root Cause: A lot of activity regarding universe.log can lead to the IO being unable to rename it, because OS will not give access, file being busy.

Resolution

There is a variable that allow IO to lock the universe.log for its rotation:
U_ARCHLOG_LOCK

This variable can be found in
Node's setting : Logging
under label :
System wide file lock for log archive
Or in french :
Verrouillage système du fichier journal lors de l'archive

This variable can be set to N (for no) Y (for Y) or B (Yes with blocking). Default is N.
Though setting it to Y could be enough, setting it to B can be necessary. Try Y before B.