Hi Alessandro, we just did a mig of 8.1.7.4 to 10.2.0.2 using exp/imp. The export files were 100Gb in total. No tables with LONG type columns and millions of rows so the import finished rather smoothly in 24 hours (Win2K sp4/8CPU/8Gb) I noticed thast the STATS were locked after the import in 10.2 so I unlocked them by calling dbms_stats.unlock_schema_stats() I prefer exp/imp because of the possibility of having a clean/neat database to start with. Sqlplus COPY is also a way to do it (just make sure nobody is changing the source database while you copy it :-) Best wishes/vriendelijke groeten, Andre van winssen > Hi all, > in the next weeks, I'll have to perform an update from 8.1.7.3 rel. > directly to 10gR2, platform is Win2K sp4. > > On Oracle documentation, I found "Oracle Database Update Guide for 10g > Rel. 2", this seems to be a good starting point, but are there any > suggestions and caveats for this job? > > Furthermore, the specified doc says the update can be performed in > different ways (DBUA, manual, export/import, data copying); according to > your experience, what is the less troublesome method? > > Thanks for your help, > > Alessandro > > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l