Hello List, this is 11.2.0.2.0 Solaris dbms_redefinition with options_flag => DBMS_REDEFINITION.CONS_USE_ROWID Does enybody get through to avoid the creation of the unique index on M_ROW$$ in SYSTEM tablespace? Trace 10046 show this statement: CREATE UNIQUE INDEX "owner"."I_SNAP$_table_name_changed" ON "owner"."table_name_changed$REORG" ("M_ROW$$") PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS TABLESPACE "SYSTEM" I don't see any clue in documentation and there is a not answered thread in OTN to this topic, so I have little hope. Anyway I want get some feedback before increasing the system tbs. thanks Jaromir D.B. Nemec -- //www.freelists.org/webpage/oracle-l