>>> - Ensure that the SHARED_POOL_SIZE and the LARGE_POOL_SIZE are at least >>> 150Mb. >>> - Make sure the JAVA_POOL_SIZE initialization parameter is set to at least >>> 150 MB. You will find the same requirements on the 9i upgrade guide too. I think you have to set these parameters *only* during the upgrade process(and, of course, large and java pools have to be set only if the corresponding options are used). Regards, Dimitre Radoulov P.S. Yesterday I forgot to set the java pool size to 150M(the current value was 30M) while upgrading from 9i r1 to 9i r2 with the java option. The upgrade was successful.