K.2 Storage format of operation log output
Operation log data is output to the operation log file (imm_operation.log), which is a sequential file (SEQ2). When the size of the log file reaches a specified value (the initial value is 5 megabytes), the file is renamed to imm_operationn.log (n: decimal number in the range from 1 to 16) and saved. Then, a file with the same name before the change is created, and then log data is written to this file.
You can use the operation log definition file (imm_operationlog.conf) to change when to switch the file, the output destination of files, and the maximum number of files that can be saved. For details about how to specify the operation log definition file, see K.5 Settings for outputting operation logs.