/var/adm/messages is full in Sun Solaris

The /var/adm/messages is the file to which all the messages printed on the console are logged to by the Operating System. This helps to track back check the console messages to troubleshoot any issues on the system. Syslog daemon also writes to this /var/adm/messages file.

du and df show different disk sizes in Sun Solaris

If you are an UNIX/LINUX administrator then you would have possibly come across or will see quite regularly that DU and Df do not always agree on the size of the filesystem when measured with most of the file systems. In most known scenarios, df will be reporting less available space than the du command.