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Troubleshooting the system



Troubleshooting system-level problems
        Other troubleshooting documentation
        Preparing to recover from problems
                Recording your root disk layout
        Restoring a corrupted root filesystem
        System crashes
                Recovering from a system panic
                Recovering after a power failure
                Automatic reboot
        Analyzing system failures
                Traps, faults, and exceptions
                Console panic information
                Getting the EIP number
                Checking error messages
                Checking system files with error histories
                Checking system configuration
                Generating a system dump image with sysdump(ADM)
        Examining a memory dump with crash(ADM)
                Studying a panic
                Additional help from Technical Support
        Common system-wide problems
        cron, at, and batch troubleshooting
                cron daemon is not running
                at command fails: cannot change mode of job
        Runaway processes

Using the crash(ADM) diagnostic tool
        Running the crash command
        Defining the default dump device
        Examples of using crash
        Examining processes
                Examining the process table
                Examining the u-area of a process
                Finding out which files a process has open
                Determining the size of a process
                        Finding regions shared by processes
                        Finding the largest processes on a system
        Examining kernel text
        Studying a system panic
                panic command
                Examining a kernel stack trace
                Determining the kernel component that failed
                Using strings(C) to find kernel component
                Using nm(CP) to find kernel component
                Additional help from SCO OpenServer Technical Support
        Examining tty and cblock structures
        Examining the values of kernel tunable parameters
        Monitoring memory allocation
        Examining use of STREAMS resources
        Translating virtual addresses to physical addresses

Index