SQL> column property_value format a25
SQL> SELECT property_name,property_value FROM DATABASE_PROPERTIES where PROPERTY_NAME='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME PROPERTY_VALUE
------------------------------ -------------------------
DEFAULT_TEMP_TABLESPACE TEMP
SQL> create temporary tablespace temp2
tempfile 'C:\oracle\product\10.2.0\oradata\dba20\TEMP02.DBF' SIZE 2M;
Tablespace created.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
Delete TEMP01.DBF
ORACLE instance shut down.
SQL> startup;
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 1247876 bytes
Variable Size 79693180 bytes
Database Buffers 79691776 bytes
Redo Buffers 7139328 bytes
Database mounted.
Database opened.
SQL> alter database default temporary tablespace temp2;
Database altered.
SQL> column property_value format a25
SQL> SELECT property_name,property_value FROM DATABASE_PROPERTIES where PROPERTY_NAME='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME PROPERTY_VALUE
------------------------------ ----------------------------------------------
DEFAULT_TEMP_TABLESPACE TEMP2