EMS Manual

EMS Programs
EMS Manual—426909-005
13-4
EMSACOLL—Alternate Collector Program
If any of the filters is bad or incorrectly identified, the alternate collector
generates an appropriate error message and terminates. The error message
specifies the first bad filter encountered. A bad filter is one that is not in the
correct format or cannot be accessed.
LOGPREFIX char
lets the user specify a different prefix pattern for an alternate collector’s log
files and the configuration file. The default pattern for the context file is
ZZEVCONF, and the default pattern for the log files is ZZEVnnnn. The char
variable can be any alphanumeric character (0 through 9; A through Z) and
modifies the third character of the prefix pattern. For example, if the char
variable is Y, the context file is named ZZYVCONF and the log files are named
ZZYVnnnn.
BACKUP backup-cpu
specifies the CPU number for the backup process. If this option is not
specified, the alternate collector does not run as a process pair.
BLOCKING { ON | OFF }
assigns the value of the BLOCKING attribute.
LOGSUBVOL subvol-name
identifies the subvolume that should be used for the log files. If this option is
not specified, the subvolume referred to by DEFAULTSUBVOL is used. If
neither option is specified, the value in =_DEFAULTS is used.
DEFAULTSUBVOL subvol-name
identifies the subvolume that should be used if the log subvolume becomes
inaccessible. If this option is not specified, the default volume is the log
subvolume. If DEFAULTSUBVOL is not specified and the log subvolume
becomes inaccessible, the alternate collector stops logging.
ROTATEFILES { ON | OFF }
tells the collector what action to take if the creation of a new log file causes the
number of log files to exceed the MAXFILE limit by assigning the value of the
ROTATEFILES attribute. The primary and alternate collectors take different
actions when this condition occurs.
If ROTATEFILES is ON (TRUE):

The primary collector purges the oldest file.

The alternate collector checks the oldest file.
If this file is open to another process or is not a valid log file, the alternate
collector creates the next file in the sequence and continues logging.