IVLSQL est un utilitaire qui fait ce que tu veux,
je crois ...
Sinon qques requêtes pour visualises les structures
(tables, index ...)
dbm connect to mabase
dbm select distinct(dbname) from sysibm.systables
dbm select constname,colname from sysibm.syskeycoluse where tbname = 'MATABLE'
dbm select name,coltype,length from sysibm.syscolumns where tbname = 'SYSINDEXES'
dbm select uniquerule, colnames from sysibm.SYSINDEXES where tbname = 'MATABLE'