Base on ORACLE 10GR2 upgrade guide say: Converting Databases to 64-bit Oracle Database Software If you are installing 64-bit Oracle Database 10g software but were previously using a 32-bit Oracle Database installation, then the databases will automatically be converted to 64-bit during the upgrade to Oracle Database 10g except when upgrading from Release 1 (10.1) to Release 2 (10.2). I tried to convert ORACLE 32 bits (10.2.0.3) database to 64 bits (10.2.0.4) and got “internal error” . My procedures are: cold backup 32 bits database (10.2.0.3) on Redhat AS 4.6 ftp database files to 64 bits server (Redhat 5.2)/64 bit ORACLE 10.2.0.4 use dbua to convert get error message ” ORA-06553: PLS-801: internal error [56319]” Anyone know what wrong?