Sybase 11.9.x-12.5 - Manual (Page 82)

Working with Error Messages
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Use this chapter as an error reference. Look up the error number and note the
severity. Then use the accompanying explanation (available for most, though
not all, messages) to determine your next course of action. If the error is one of
the commonly occurring server messages documented in the chapter “Error
Message Writeups,” the explanation will refer you to that chapter. In other
cases, it gives you guidance on the nature of the error and what to do next.
Generally speaking, the severity level of a message corresponds to the type and
severity of the problem that the server encountered. For a complete description
of severity levels, see “Adaptive Server Error Logging” in the System
Administration Guide.