> i have a problem with my 27Gb FB2.5 Database. Doing a backup is workíng fine. > Doing a restore is failing due to the following error: > > gbak: ERROR:attempt to store duplicate value (visible to active transactions) > in > unique index "RDB$INDEX_20" > gbak:Exiting before completion due to errors > > Here`s the clue: The database is working fine. There are no duplicated roles, > no duplicated datasets, index-reorg is working fine, gfix could`t find ANY > errors. > > I tried to find out, which relation "RDB$INDEX_20" has. It refers to a table > named "Abrechnung", Column named "RUECKBUCHUNG". But there are no duplicated > values. In fact, Column "RUECKBUCHUNG" is always empty (IS NULL). > > Any Ideas?
IMHO, RDB$INDEX_20 is an index on the RDB$COLLATIONS system table. This can be proved by: select i.rdb$relation_name , s.rdb$field_name from rdb$indices i join rdb$index_segments s on (i.rdb$index_name = s.rdb$index_name) where i.rdb$index_name = 'RDB$INDEX_20' So, basically this means, there are duplicate values in RDB$COLLATIONS.RDB$COLLATION_NAME. What do you get by executing the following query? select rdb$collation_name from rdb$collations group by rdb$collation_name having count(*) > 1 Greetings from Austria (lost 1:2 unlucky). ;-) Regards, Thomas
