Syntax

#include "milo.h"

...
mi_integer mi_lo_specset_estbytes(LO_spec, estbytes)

		MI_LO_SPEC *LO_spec;

		mi_int8 *estbytes; 


LO_spec
is a pointer to the LO-specification structure in which to save the estimated size.

estbytes
is a pointer to an 8-byte integer (mi_int8) that contains the desired estimated number of bytes for the smart large object.





 



Valid in Client Application?

Valid in Server Routine?

Yes
Yes

Important: Before you call mi_lo_specset_estbytes(), you must initialize an LO-
specification structure.

Once you set the estimated size in an LO-specification structure, you pass this structure to a smart-large-object creation function (such as mi_lo_create()) to provide the estimated size as a user-supplied storage characteristics for a new smart large object.

The smart-large-object optimizer attempts to optimize the extent size based on past operations on the smart large object and other storage characteristics (such as maximum bytes) that it obtains from the storage-characteristics hierarchy. Most applications can use the size estimate that the smart-large-object optimizer generates.

Important: Do not specify an estimated size unless you have enough information about the data to provide a useful estimate. If you do set the estimated size for a smart large object, do not specify a value much higher than the final size of the smart large object. Otherwise, the database server might allocate unused storage.

Return Values

MI_OK	The function was successful.
MI_ERROR	The function was not successful.

In Chapter 3, "Handling Smart Large Objects," see "Storage Characteristics" for more information on the estimated size of a smart large object. See "The LO-Specification Structure", and "Defining User-Specified Storage Characteristics" for information on how to use the mi_lo_specset_estbytes() function.