Parameter type	String
Syntax	MAX_DUMP_FILE_SIZE = {integer [K \| M] \| UNLIMITED}
Default value	UNLIMITED
Parameter class	Dynamic: ALTER SESSION, ALTER SYSTEM
Range of values	0 to unlimited, or UNLIMITED

MAX_DUMP_FILE_SIZE specifies the maximum size of trace files (excluding the alert file). Change this limit if you are concerned that trace files may use too much space.

A numerical value for MAX_DUMP_FILE_SIZE specifies the maximum size in operating system blocks.
A number followed by a K or M suffix specifies the file size in kilobytes or megabytes.
The special value string UNLIMITED means that there is no upper limit on trace file size. Thus, dump files can be as large as the operating system permits.

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