Monday, August 16, 2010

Number format exception with eclipse link JPQL IN clause

Eclipse link jpql IN clause can throw Number format exception even when number is valid.

JPQL:
"Select e from Entity e where e.id IN (4562859281)". This can throw number format exception, this is because of a limitation with JPQL. workaround is to use bind parameters.

Wednesday, August 4, 2010

SQL Trace

Learn how to use SQL trace
http://www.orafaq.com/wiki/SQL_Trace

To know the file where trace will be logged.
Login as sys (sqlplus sys/oracle@:1521/orcl AS SYSDBA)

UDUMP is the database's USER DUMP DIRECTORY.
SQL> SHOW PARAMETERS user_dump_dest

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
user_dump_dest string /app/oracle/admin/o102/udump