Home | Previous Page | Next Page   Overview of IBM Informix ODBC Driver > Global Language Support >

VMB Character

Description:
Varying multibyte character length reporting option that specifies how to set pcbValue when rgbValue (the output area) is not large enough for the code-set-converted data. The possible values are:

Estimate. IBM Informix ODBC Driver makes a worst-case estimate of the storage space needed to return the data.

Exact. IBM Informix ODBC Driver writes the code-set-converted data to disk until all the data is converted. Because this option can degrade performance, it is recommended that you do not use this option unless your application does not work with Estimate.

When you use a multibyte code set (in which characters vary in length from 1 to 4 bytes) for either the database or client locale, the length of a character string or simple large object (TEXT) in the database locale does not indicate the length of the string after it is converted to the client locale.

Possible values for UNIX:
0 = Estimate
1 = Exact
Possible values for Windows:
Estimate
Exact
odbc.ini field for UNIX:
VMBCHARLENEXACT
Default value for UNIX:
Estimate
Default value for Windows:
Estimate
Home | [ Top of Page | Previous Page | Next Page | Contents | Index ]