I had a table with 200.000 records.

I deleted 180.000 records from this table.

Now i'm trying to backup my database and the gbak stop in this table
and never go away.

I didn't wait so much (about 5 minutes), but other tables are almost
instantly.

I remember i read here there is some problem with garbage collection
when deleting many records and this behavior is expected.

Am i right? If yes, is there some workaround to avoid this delay?

Thanks.