Starting up from pfile

Hi gurus,
I need to change the memory of an instance from pfile regarding that I got some questions..
1)Shall I use the spfile to make it a initname.ora
2)while making chnages shall I choose a figure wich is whole multiple of db_block?
e.g: shared_pool_size = 160000000 is ok? or 163840000 is OK?
3) if I choose 160000000 and startup with pfile what will happen?
4)What needs to be done for making db stable so that it could be started normally in future.--shall I create a spfile from pfile??

Hello,
1) yes, you should change your pfile to spfile.
2) In giving the size for shared_pool_size or any other thing if the memory is not in multiple of db_block_size then Oracle will automatically switch to next nearest db_block_size multiple.
3)what you mean by this question ??? No, doubt Instance will startup with next nearest size in multiple of db_block_size.
4)again stable in terms of what ???? Go for spfile and always take backup of your control file as well as spfile when to make changes in you database....
Any further query is welcomed.

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Starting database using PFILE

Hello, Gurus.
I am a newbie to Oracle. Need to modify the paramters for database, so the use of Pfile is required. But even the Pfile created by oracle is not working correctly.
Below shows the error messages:
SQL> create pfile='C:\responsefiles\oraclesetup\win\pfileoXXbg.ORA' from spfile;
File created.
Now when I am trying to use this file to start the instance, I am getting the error:
C:\Windows\system32>oradim -STARTUP -SID OXXBG -STARTTYPE inst -PFILE 'C:\responsefiles\oraclesetup\win\pfileoXXbg.ORA'
ORA-01078: failure in processing system parameters
I have not modifed or put any comments in the above file, so could not understand the reason for error mesaages. I can start the instance without using PFILE option.
Any ideas are welcome.
Edited by: 808116 on Nov 7, 2010 9:50 PM

Hello,
I have tried below:
C:\ORACLE\product\11.2.0\dbhome_1\BIN>set ORACLE_SID=O22BVGI
C:\ORACLE\product\11.2.0\dbhome_1\BIN>sqlplus /nolog
SQL*Plus: Release 11.2.0.1.0 Production on Tue Nov 9 10:43:52 2010
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> connect / as sysdba
Connected to an idle instance.
SQL> startup pfile='C:\responsefiles\oraclesetup\win\PFOXXXXGI.ORA'
ORACLE instance started.
Total System Global Area 417546240 bytes
Fixed Size 2176328 bytes
Variable Size 306186936 bytes
Database Buffers 100663296 bytes
Redo Buffers 8519680 bytes
Database mounted.
Database opened.
SQL> create spfile from pfile
2 ;
create spfile from pfile
ERROR at line 1:
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file
'C:\ORACLE\PRODUCT\11.2.0\DBHOME_1\DATABASE\INITOXXXXGI.ORA'
SQL> startup force
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file 'C:\ORACLE\PRODUCT\11.2.0\DBHOME_1\DATABASE\INITOXXXXGI.ORA'
SQL>
Here, it seems to me that the instance has started, using the pfile I have mentioned.
But when I tried to log into it, it is showing me errors:
C:\ORACLE\product\11.2.0\dbhome_1\BIN>sqlplus SYS/password@OXXXXGI as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Tue Nov 9 10:54:47 2010
Copyright (c) 1982, 2010, Oracle. All rights reserved.
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
Enter user-name: system
Enter password:
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Process ID: 0
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How can start service from the spfile, on Windows 2003,

On Windows 2003, how can start service from the spfile?
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Hi,
I'm not sure, but maybe your windows Instance service was created with
C:\> oradim -new -sid <SID> -startmode m -pfile C:\oracle\product\10.1.0\admin\pfile\init.ora
then, you need edit this service with command like below:
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Version : 11.2
os : AIX
I created a pfile from spfile stored it in a non-default location ie. a location other than ORACLE_HOME/dbs
create pfile='/u01/oracle/mytest_pfile.ora' from spfile;I brought down the DB , and started the DB using the above pfile from non-default location
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No ,it's not a bug.
order of precedence of parameter file is as follow :
1.) spfileSID.ora --- non default
2.) default spfile
3.) initSID.ora --- non default pfile
4.) default pfile
In your case i.e; create spfile='/u01/oracle/mytest_spfile_sep23_2011.ora' from pfile;
here it is reading pfile from fefault pfile because it will always search the pfile or spfile in dba directory .
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create spfile='/u01/oracle/mytest_spfile_sep23_2011.ora' from pfile='/u01/oracle/mytest_pfile.ora' ;
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Anand.. wrote:
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>
>
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