You can take a backup of /var/opt/novell/log/zenworks/tomcat/catalina.out or any other log file using the logrotate utility.
The logrotate utility is available with the operating system. The utility eases the administration of systems that generate large numbers of log files. It allows automatic rotation, compression, and removal of log files. Each log file might be handled daily, weekly, monthly, or when it grows too large. For more information on the usage of the logrotate utility, see the logrotate man page.
ZENworks 7.2 Linux Management with IR1 provides a logrotate file, /etc/logrotate.d/zlm-server-logrotate, on the server. The logrotate utility uses the file to rotate the existing and the new log files created in /var/opt/novell/log/zenworks on the ZENworks Linux Management server. These server log files are compressed with date extension, rotated, and backed up daily for 33 days before being discarded.
The tomcat server logs rotated within the tomcat subdirectory are not affected by the logrotate file. For SLES 9 and RHEL4 servers, the logrotate utility is also applied to zmd-messsages.log, the agent log file because the path is common for both server and agent log files.