AFAIK it is not available except for $$$. It looks like the relevant standards are parts 1 and 2 of the SQLJ standard (Part 0 covers embedded SQL).
For working drafts try:
http://www.wiscorp.com/sql/sql_2003_standard.zip (5WD-13-JRT-2003-09.pdf)
http://www.wiscorp.com/sql/sqljrout.zip (SQLJ Part 1--SQL Routines)
http://www.wiscorp.com/sql/sqljtype.zip (SQLJ Part 2--SQL Types)
Joe
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