Second Undo Tablespace in Oracle10g v.2...

Question

Hi ,
Having connected as sys i created another undo tablespace ... except for the first one created by default....
SQL> CREATE UNDO TABLESPACE INFO_UNDO_TBL DATAFILE 'C:\oracle\product\10.2.0\oradata\INFO\INFO_UNDO_DFL.ORA' SIZE 10M;
Tablespace createdI have two questions...
1) When i issue the command:
SQL> SHOW PARAMETER UNDO_TABLESPACE;
NAME                                 TYPE        VALUE
undo_tablespace                      string      UNDOTBS1It does not refer the new undo tablespace..... I suppose that i have to write:
sql> alter system set undo_tablespace=UNDOTBS1,INFO_UNDO_TBL scope =BOTH... or something like this....Is that correct....??????
2)The Oracle Doc (Concepts) points out.....
"In automatic undo
management mode, each Oracle instance is assigned one (and only one) undo
tablespace."
That means i cannot issue the command "alter system set undo_tablespace=UNDOTBS1,INFO_UNDO_TBL" (if it is correct) since the default undo tablespace runs in AUTO mode.....????
SQL> SHOW PARAMETER UNDO_MANAGEMENT;
NAME                                 TYPE        VALUE
undo_management                      string      AUTOMany thanks....
Sim

Answer 1

Hi ,
I dont think you can have two undo tablespaces assigned for a database.This is what you get in the alert log files even if you are deceived by the statement "System Altered"
SQL> alter system set undo_tablespace='UNDOTBS1,UNDOTBS2' scope=spfile;
System altered.
SQL> sho parameter undo
NAME TYPE VALUE
undo_management string AUTO
undo_retention integer 900
undo_tablespace string UNDOTBS1,UNDOTBS2
Alert log extract..............
Errors in file j:\oracle\product\10.2.0\admin\orcl10g\udump\orcl10g_ora_1724.trc:
ORA-30012: undo tablespace 'UNDOTBS1,UNDOTBS2' does not exist or of wrong type
Errors in file j:\oracle\product\10.2.0\admin\orcl10g\bdump\orcl10g_reco_1808.trc:
ORA-30012: Message 30012 not found; No message file for product=RDBMS, facility=ORA
Tue Oct 02 15:37:41 2007
Errors in file j:\oracle\product\10.2.0\admin\orcl10g\bdump\orcl10g_smon_1760.trc:
ORA-30012: Message 30012 not found; No message file for product=RDBMS, facility=ORA
Instance terminated by USER, pid = 1724
ORA-1092 signalled during: alter database open...
Regards,
-Praveen
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