Runtime errors in SQLSTATE

When an SQL statement results in a runtime error, the database server stores a value in SQLSTATE whose class code is greater than "02". The actual class and subclass codes identify the particular error. Class and subclass codes for SQLSTATE lists the class and subclass codes for SQLSTATE. To retrieve the error message text, use the MESSAGE_TEXT field of the GET DIAGNOSTICS statement. The CLASS_ORIGIN and SUBCLASS_ORIGIN exception fields have a value of "ISO 9075" to indicate the source of the error.

If the SQL statement generates an error that the ANSI or X/Open standards do not support, SQLSTATE might contain either of the following values:

An SQLSTATE value of "IX000" indicates an error that is specific to HCL OneDB™.
The SQLCODE variable contains the error code, and the MESSAGE_TEXT field contains the error message text and any ISAM message text. The CLASS_ORIGIN and SUBCLASS_ORIGIN exception fields have a value of "IX000" to indicate the source of the error.
An SQLSTATE value of "U0001" indicates a user-defined error message from a user-defined routine.
The MESSAGE_TEXT field contains the error message text. The CLASS_ORIGIN and SUBCLASS_ORIGIN exception fields have a value of "U0001" to indicate the source of the error.