Hi All, We are implementing TDE(Transidential Data Encryption) on a solaris box 10gr2 RAC ASM for one of client which is a Bank. We are facing following two issues. This is a 4 TDB database. 1. Joining between encrypted and no encrypted table's columns are not working. 2. Encryption process is taking too much of time say 5 days ( We first created tables with out encryption loaded data and then modified the columns to be encrpted) Let me know if anybody come accross such sitiuation. Thanks and Regards Harshan -- Harshan Eppurath 040-40214832 09392426435