Try parsing GC log files with missing GC log file header lines. When the Azul Zulu Prime JVM starts and a GC log is being created, information about the environment is printed to the log.
The information includes the start time for the Azul Zulu Prime JVM process.
If the file is very large and you are having trouble with memory use by GC Log Analyser then split the GC log file into smaller files that are easier to analyze.
Use this option to override the normal requirement that the initial information be present in the GC log file.
Alternatively, append the original file’s [GCHH and first [GCH lines to each of the smaller files.