In this particular case its 11.2.1.0.5 but we have various versions of 11.2 of GG out there... I am thinking that one way to avoid any issue is to run it against the GG user where any data changes are ignored. From: Maaz Anjum [mailto:maazanjum@xxxxxxxxx] Sent: Thursday, January 30, 2014 6:29 PM To: CRISLER, JON A Cc: ORACLE-L Subject: Re: alter table shrink space and Golden Gate ? Could you be a little more specific on the version of GoldenGate between source and target? On Thu, Jan 30, 2014 at 5:04 PM, CRISLER, JON A <JC1706@xxxxxxx<mailto:JC1706@xxxxxxx>> wrote: I am wondering if "alter table shrink space" has any negative impact on Golden Gate replication , or there are any gotchas - concerns beyond the standard docs on shrink space ? -- A life yet to be lived...