Hi all, I recently installed 10g rel 2 on my win 2000 box. Since the have had a battle to run any 9i stuff, eg dbca and pl/sql Developer. I've fixed the dbca problem thanks for posts on this forum (thanks), but my pl/sql Developer is not very happy: Almost all queries cause the following error : "ORA-01460: unimplemented or unreasonable conversion requested" From the sql window this is only annoying, but the GUI functionallity no longer works, e.g. to view/edit a table fails, to describe an table fails.... etc So far I've tried: 1) The same fix as for the dbca, i.e. I've created a bat file that sets the environment before starting the GUI: ------------------ bat file --------------------- set PATH=<removed all 10g components, only 9i components plus origonal PATH from before 10g> set ORACLE_BASE=D:\oracle set ORACLE_HOME=D:\oracle\ora92 set NLS_LANG=AMERICAN_AMERICA.WE8MSWIN1252 set LD_LIBRARY_PATH=%ORACLE_HOME%\lib d: cd "D:\PLSQL Developer" "D:\PLSQL Developer\PLSQLDev.exe" ---------- end of bat file --------------------- 2) I've explicitly set the OCI library from within PL/SQL Developer : Tools->Preferences OCI Library = D:\oracle\ora92\bin\oci.dll and set the ORACLE_HOME as apposed to letting it be auto-detected. But still no good. PL/SQL Dev still doesn't want to play the game. Any ideas would be appreciated. Cheers Tony