Hello Gurus, Please let me know any suggestions other than Oracle-Golden-gate to achieve Zero downtime migration.the challenge is we need to Upgrade and Migrate Oracle 8i database [Upgrade to 11gR2 and migrate to Sun-Solaris from AIX]. This is very critical application and client needs Zero downtime. Please let me know your valuable suggestions on this. And also please let me know your valuable inputs/links on the documents on using Oralce Golden gate to achieve Zero downtime upgrade and migration Thanks in Advance. Regards, Avadhani