Migrated the database to ASM storage .

Hi friends,
I have migrated the database from 10g(non-asm) to 11g ASM storage on solaris machine. I am facing database slowness after the database upgrade.I don't find any problem in the ADDM/AWR report.
Could you please suggest me whether anything needs to check?
Regards
Rocky

Can you run ADDM from the dbconsole?
Also you can run sql tuning advisor.
However, its worth checking your diskgroups.
Can you post Mountpoints defined in /etc/vfstab ?

Similar Messages

Migrating a database to ASM.

Hi all,
I have an environment for test purposes running 10.2.0.1.0 database on a Linux CentOS 4 box.
Now what I´m trying to accomplish is migrate this database to ASM.
Some adittional info:
$ ps -ef | grep pmon
oracle 4063 1 0 07:27 ? 00:00:00 ora_pmon_APPS102
502 6659 1 0 07:34 ? 00:00:00 asm_pmon_+ASM
$ lsnrctl status
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM", status BLOCKED, has 1 handler(s) for this service...
Service "APPS102" has 1 instance(s).
Instance "APPS102", status READY, has 1 handler(s) for this service...
What I´m doing is to log into database through EM 10g console as sys user, then I go to the Administration page from where I can run the ASM migration wizard.
Then, after inform my SYS password and my Host account/Password, I´m facing below error:
Listener refused the connection with the following error: ORA-12528, TNS:listener: all appropriate instances are blocking new connections The Connection descriptor used by the client was: (description=(address=(host=VM_PEGASUS.localdomain)(protocol=tcp)(port=1521))(connect_data=(sid=+ASM)(server=dedicated)))
I´ve already stopped and started the listener and restarted both instances. Did not work, same situation.
Well, any help will be very appreciated.
Thanks,
Marcello M.

Hi,
Please see (How To Use Automatic Shared Memory Management (ASMM) In Oracle10g) Doc ID: Note:295626.1 on Oracle Metalink.
The main goal of this document is to show you how to put in place the ASMM facility introduced with Oracle10g, how to configure it, and also some examples on how to monitor its activity.
Adith

Migrating the database

Hello, I am migrating from the PC to the Macintosh and I would like to move my music collection.
Copy the music files themselves is fairly easy, and I also know how to authorize my computer to play the DRM protected files i have.
I have two questions though.
1. Where are my playlists located?
2. I would also like to migrate the database that shows my play history, etc.
Any help would be appreciated.
Powermac G5 Mac OS X (10.4.4)

Have a look at these articles they should help:
"Moving your iTunes Music folder" http://docs.info.apple.com/article.html artnum=301748
"Networking with a Windows PC" http://docs.info.apple.com/article.html?artnum=19652

Migrate existing database to ASM.

Hello all,
I am currently working on stand alone database and i want to migrate my existing database to ASM.
i am trying it via RMAN and i did the following changes in my database :-
SQL>alter system set control_files='+data' scope=spfile;
System altered.
SQL>alter system set db_create_file_dest='+data' scope=spfile;
System altered.
SQL>alter system set db_recovery_file_dest='+data' scope=spfile;
System altered.
here "data" is the disk group
than i shutdown the db and started in no mount mode
so i can start the migration via RMAN
in rman i did the following things:-
D:\>RMAN target=orcl
Recovery Manager: Release 10.2.0.1.0 - Production on Fri Aug 28 01:13:02 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
target database Password:
connected to target database: orcl (not mounted)
RMAN> restore controlfile from 'D:\oracle\product\10.2.0\oradata\orcl\CONTROL01.
CTL';
Starting restore at 28-AUG-09
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=156 devtype=DISK
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 08/28/2009 01:14:40
ORA-19504: failed to create file "+DATA"
ORA-17502: ksfdcre:4 Failed to create file +DATA
ORA-15001: diskgroup "DATA" does not exist or is not mounted
ORA-15077: could not locate ASM instance serving a required diskgroup
ORA-19600: input file is control file (D:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\CO
NTROL01.CTL)
ORA-19601: output file is control file (+DATA)
RMAN>
according to me i guess i have not specified the disk group ="+data" properly or there is some other way to specify....
please can any help me resolving this problem
Thanks & Regards
Pratik Lakhpatwala
Jr Oracle DBA

I am currently working on stand alone database and i want to migrate my existing database to ASM.
i am trying it via RMAN and i did the following changes in my database :-
SQL>alter system set control_files='+data' scope=spfile;
System altered.It should be alter system set control_files='+data/control01.ctl' scope=spfile;
See Metalink Doc ID 252219.1
Rgds.

Migrate entire database to ASM on another server via RMAN minimal downtime

Hi
I was looking for a procedure to migrate non ASM production databases to ASM via RMAN on a separate server with minimal downtime (backup as copy/switch database to copy technique). We have TDPO for tape backup and I normally rman clone test databases between servers but this involves too much downtime for production. The procedure in the ASM Admin Guide (Chapter 8) assumes the databases are on the same server.
Thanks
Tom Cullen

tcullen wrote:
Hi
I was looking for a procedure to migrate non ASM production databases to ASM via RMAN on a separate server with minimal downtime (backup as copy/switch database to copy technique). We have TDPO for tape backup and I normally rman clone test databases between servers but this involves too much downtime for production. The procedure in the ASM Admin Guide (Chapter 8) assumes the databases are on the same server.
Thanks
Tom CullenDear Tom. Why you think you'll have downtime in the production database? The database will be running while the clone will be processing. Check the following link:
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/rcmdupdb.htm#BGBDCDGJ
RMAN DUPLICATE DATABASE From ASM to ASM: Example
Kamran Agayev A.
Oracle ACE
My Oracle Video Tutorials - http://kamranagayev.wordpress.com/oracle-video-tutorials/

Error while starting the database in asm

Hi,
I am getting an error while at the time of starting the instance in asm enviornment.
ORA-00202: control file: '+DG_GROUP1/poldev01/controlfile/current.260.743010027'
ORA-17503: ksfdopn:2 Failed to open file +DG_GROUP1/poldev01/controlfile/current.260.743010027
ORA-15001: diskgroup "DG_GROUP1" does not exist or is not mounted
ORA-15055: unable to connect to ASM instance
ORA-01031: insufficient privileges
Kindly help.

Hi,
Can you check with the Permissions
ORA-15055: unable to connect to ASM instanceORA-01031: insufficient privileges>
Anand

How to Migrate the database from AIX 4.3 oracle 7 to another Aix 5.3

Hi,
This is the scenario.
Oracle 7 runs in AIX 4.3 now the client wants to upgrade to a new machine with
oracle 10gr2 in AIX 5.3 .
AIX 4.3 in production now.
AIX 5.3 and oracle 10gr2 installed now.
is there any other possibility other than export to migrate to new server.
Regards
Elamaran

Sorry to disappoint you :( It's the same thing as with my car - If it's not without fuel I turn the key and drive ;)
Confined to the development database instance, writing packages is the only thing I'm allowed to do (even forbidden to use some of the Oracle supplied ones).
There are other guys having to do the rest.
Regards
Etbin

Migrate VLDB(30TB) NonRAC database to ASM

My customer is running 10.2.0.5 database which is 30TB in size. Its HACMP/PowerHA with active/passive configuration.
Customer would like to migrate this database to ASM. They dont take rman backups because of the size of the database and rely on bcv backup technology. Customer would like to know what is the best possible way of doing this migration with minimal downtime and risk.

BCV uses copy on write technology and advanced mirroring techniques. A BCVs can be used to resync data or it can be detached from the active data storage and mounted separately for offline processing.
If a complete restore of an object or previous device clone is sufficient then it can be a quick disaster recovery. However, certain implementations, like EMC Timefinder/Snapshot are not suitable for disaster recovery since they rely on the existence of the original data source.
Anyway, I think BCV technology provides only a very limited way for Oracle database backup since it duplicates data errors and is not suitable for advanced rman database or tablespace restore and recovery. A 30 TB database can be time consuming for RMAN, which also depends on what kind of database it is and, for instance, how frequent a full backup is required, but it can be done.
Regarding NAS, it is just an example to show that affordable storage solutions exist and that it does not have to be expensive EMC storage. I do not see why such a solution cannot meet very strict data center controls in terms of technical aspects.

Which is the best way to migrate the SQL SERVER 2000 Database to SQL SERVER 2003 Database?

Hi,
I need to migrate the Production database sql server 2000 to Sql server 2003, Please give me the best idea to migrate the database without any loss data, credentials and Objects.
Nandha Kumar

SQL server does not have any version named SQL server 2003 please check the version correctly it should be either SQL 2005,2008,2008 R2,2012
You can use the backup/restore to upgrade the SQL 2000 database to till SQL 2005,2008,2008R2
For SQL Server 2000 to 2012
First upgrade from SQL 2000 database to either SQL 2005, 2008 or 2008R2 and than upgrade it to SQL 2012.
http://social.msdn.microsoft.com/Forums/sqlserver/en-US/eaa1eb44-729f-466b-8233-cb768fbb4208/upgrading-to-sql-server-2008-from-sql-server-2000?forum=sqlsetupandupgrade
http://social.msdn.microsoft.com/Forums/sqlserver/en-US/4fac7511-2c75-46a0-802b-807dd26b12bf/sql-2012-will-not-convert-a-sql-2000-database?forum=sqlservermigration
And after migration to SQL 2005 or 2008, if you want to script the database than can generate scripts pick DB and check off "script all objects in the selected database".
http://blog.sqlauthority.com/2011/05/07/sql-server-2008-2008-r2-create-script-to-copy-database-schema-and-all-the-objects-data-schema-stored-procedure-functions-triggers-tables-views-constraints-and-all-other-database-objects/
You can upgrade from SQL Server 2005, SQL Server 2008, and SQL Server 2008 R2 to SQL Server 2012.
http://msdn.microsoft.com/en-us/library/ms143393(v=sql.110).aspx
Please click the Mark as answer button and vote as helpful if this reply solves your problem

Migrating the Avi Code Databases

Hi,
I have a setup where there is SCOM 200 r2 and AviCode 5.6 installed.
We need to migrate the databases for AviCode. Please let me know the high level steps to complete this.
This is what I have come up with,
- Migrate the SQL databases.
- In the AviCode setup utility, change the database server name and point it to the new sql server.
Please let me know if this is enough or do we need to make any changes at the SCOM end ?
Thanks,
Dhanraj
Regards, Dhanraj

Hi Dhanraj,
Before migrating SEViewer DB stop Intercept Services on all the Intercept Agents targeted to that SEViewer instance. Start those services when the migration is done.
If you don't change SEViewer app location, - so you are only going to migrate DB, - your steps will be enough.
If you change SEViewer location, there are two steps more:
1. Target all the Intercept Agents to new SELog address (this is done within Intercept Management Console).
2. Update SEViewer location in SCOM. Please, read below how to do that.
To change the automatically assigned SEViewer address for a host you’ll need to:-
"Change scope…" to the
"Windows Computer" on the
"Rules" tab
Override "Enable enterprise mode" rule – then you can choose appropriate group in
"For a group" menu or you can choose separate computer in
"For a specific object of class: Windows Computer" menu.
3. Choose appropriate group or a computer to apply new settings (groups menu or a computers menu will appear depending on the previous selection).
4. Set up appropriate "Override Value" in SEViewer Location (Domain/NetBIOS name depending on your
network settings):
5. Do not use "Default management pack" as destination management pack to avoid possible inconsistencies
– choose/create another one (e.g. "AVIcode… Overrides");
6. Apply the changes.
7. Run task
"Upgrade Enterprise Agent" on the corresponding
"Enterprise .NET Monitoring Agent" object.
These steps will apply new SEViewer location for the chosen host(s).
Igor Savchenko, VIAcode Consulting LLC (http://www.viacode.com/)

Steps to Convert R12 Non-Rac to RAC database with ASM

dear All,
We have following environment.
R12.0.6 with a non RAC 11.2.0.2 database on on AIX (64bit). Datafiles are stored local filesystem. We want to do the following.
Migrate the database file to ASM
convert database Non RAC to RAC
we have gone through many oracle support documents but were unable to decide which path we should adopt. Any body who has done similar activity; please share only highly level steps. No step by step Instructions are needed. e.g. Install Grid Infrastructure (for single instance or the one which comes with cluster home???????), Move datafiles to ASM etc etc
Please make sure the steps are for 11gR2 and EBS R12.
Best Regards,

we have gone through many oracle support documents but were unable to decide which path we should adopt. Any body who has done similar activity; please share only highly level steps. No step by step Instructions are needed. e.g. Install Grid Infrastructure (for single instance or the one which comes with cluster home???????), Move datafiles to ASM etc etc
Please make sure the steps are for 11gR2 and EBS R12. The steps in [ID 823587.1] which is referenced above should be sufficient (from your post, I understand that you have covered the steps in this doc) -- What exactly you have issues with?
Thanks,
Hussein

How can i Migrate a database from DB2 to SQL Server 2008r2.

Hi Gurus,
Kindly help me letting me know the process for migrating the database from DB2 to SQL Server.
1) Is there any way to migrate a database from DB2 to SqlServer. (My assumption is we can not migrate database, if wrong correct me gurus).
2) Or we can only transfer data from that DB2 database to SQL Server (Using SSIS packages).
Please help me knowing the process to migrate the data from DB2 server to MSSQL server. Even am reading the documents available in the web.
Thanks in advance.. :)

Microsoft provide a migration assistant for DB2 to SQL Server:
http://www.microsoft.com/en-us/download/details.aspx?id=45296
SQL Server Migration Assistant (SSMA) is a free supported tool from Microsoft that simplifies database migration process from DB2 to SQL Server and Azure SQL DB. SSMA automates all aspects of migration including migration assessment analysis, schema and
SQL statement conversion and data migration.
Hope that helps

Datapump skipping partitioned tables in the database

I have run expdp on Oracle 10.2.0.4.0 on AIX 5.6 Platform, the export runs well exporting rows in the database but when it comes to partitioned tables in the database it export no rows for all the partitioned tables. When I run a normal exp/imp the partitioned tables are exported with all their rows.
I used the following commands:
expdp system/****** dumpfile=export_data.dmp directory=DATA_PUMP_DIR full=y logfile=export_dump.log
Output for expdp on partitioned table:
. . exported "SCOTT"."DEPT":"DEPT_2003_P1" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P10" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P11" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P12" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P2" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P3" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P4" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P5" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P6" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P7" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P8" 0 KB 0 rows
. . exported "SCOTT"."DEPT":"DEPT_2003_P9" 0 KB 0 rows
And for exp:
exp system/****** file=export_dump.dmp full=y log=export_log1.log
Result from the export log for partitioned tables:
. . exporting partition DEPT_2005_P1 881080 rows exported
. . exporting partition DEPT_2005_P2 1347780 rows exported
. . exporting partition DEPT_2005_P3 2002962 rows exported
. . exporting partition DEPT_2005_P4 2318227 rows exported
. . exporting partition DEPT_2005_P5 3122371 rows exported
. . exporting partition DEPT_2005_P6 3916020 rows exported
. . exporting partition DEPT_2005_P7 4217100 rows exported
. . exporting partition DEPT_2005_P8 4125915 rows exported
. . exporting partition DEPT_2005_P9 1913970 rows exported
. . exporting partition DEPT_2005_P10 1100156 rows exported
. . exporting partition DEPT_2005_P11 786516 rows exported
. . exporting partition DEPT_2005_P12 822976 rows exported
I am not sure about this behavour from datapump, my database is more than 800GB and we want to migrate the database from AIX to LINUX.
Thanks

Sorry I just copied and pasted some extracts from my exp and expdp logs:
For testing purposes I tried to run a datapump export of only 1 partitioned table in the database and its going through, but when I do the same on a full datapump export these partitioned tables are being exported with no rows.
Export: Release 10.2.0.4.0 - 64bit Production on Tuesday, 02 August, 2011 12:18:47
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "SYSTEM"."SYS_EXPORT_TABLE_01": system/******** dumpfile=DEPT.dmp tables=scott.dept logfile=dept1.log
Estimate in progress using BLOCKS method...
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 48.50 GB
Processing object type TABLE_EXPORT/TABLE/TABLE
Processing object type TABLE_EXPORT/TABLE/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/COMMENT
Processing object type TABLE_EXPORT/TABLE/RLS_POLICY
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/TRIGGER
Processing object type TABLE_EXPORT/TABLE/INDEX/FUNCTIONAL_AND_BITMAP/INDEX
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/FUNCTIONAL_AND_BITMAP/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "SCOTT"."DEPT":"DEPT_2009_P6" 1.452 GB 7377736 rows
. . exported "SCOTT"."DEPT":"DEPT_2009_P7" 1.363 GB 6935687 rows
. . exported "SCOTT"."DEPT":"DEPT_2008_P6" 1.304 GB 6656096 rows
. . exported "SCOTT"."DEPT":"DEPT_2010_P7" 1.410 GB 7300618 rows
. . exported "SCOTT"."DEPT":"DEPT_2008_P7" 1.296 GB 6641073 rows
. . exported "SCOTT"."DEPT":"DEPT_2010_P6" 1.328 GB 6863885 rows
. . exported "SCOTT"."DEPT":"DEPT_2007_P6" 1.158 GB 6568075 rows
. . exported "SCOTT"."DEPT":"DEPT_2009_P5" 1.141 GB 5801822 rows
. . exported "SCOTT"."DEPT":"DEPT_2011_P5" 1.162 GB 6027466 rows
. . exported "SCOTT"."DEPT":"DEPT_2007_P7" 1.100 GB 6214680 rows
. . exported "SCOTT"."DEPT":"DEPT_2011_P6" 1.106 GB 5762303 rows
. . exported "SCOTT"."DEPT":"DEPT_2010_P5" 1.133 GB 5859492 rows
. . exported "SCOTT"."DEPT":"DEPT_2007_P5" 1.001 GB 5664315 rows
. . exported "SCOTT"."DEPT":"DEPT_2008_P5" 1.023 GB 5229356 rows
. . exported "SCOTT"."DEPT":"DEPT_2010_P8" 1.078 GB 5549666 rows
. . exported "SCOTT"."DEPT":"DEPT_2007_P8" 940.3 MB 5171379 rows
. . exported "SCOTT"."DEPT":"DEPT_2008_P8" 989.0 MB 4920276 rows
. . exported "SCOTT"."DEPT":"DEPT_2009_P8" 918.6 MB 4553523 rows
. . exported "SCOTT"."DEPT":"DEPT_2006_P6" 821.0 MB 5220879 rows
. . exported "SCOTT"."DEPT":"DEPT_2008_P4" 766.6 MB 3832262 rows
. . exported "SCOTT"."DEPT":"DEPT_2006_P8" 747.9 MB 4753538 rows
. . exported "SCOTT"."DEPT":"DEPT_2006_P7" 741.8 MB 4708242 rows
. . exported "SCOTT"."DEPT":"DEPT_2010_P4" 734.2 MB 3713567 rows
. . exported "SCOTT"."DEPT":"DEPT_2005_P7" 661.4 MB 4217100 rows
. . exported "SCOTT"."DEPT":"DEPT_2005_P8" 647.1 MB 4125915 rows
. . exported "SCOTT"."DEPT":"DEPT_2011_P4" 677.8 MB 3428887 rows
I also tried to run a normal schema by schema export with the normal exp system/password command the and got my dump file which is about 300GB, when I run the imp system/password command and specify fromuser=<system > and touser=<schemas_in_the_dumpfile> seperated by commas, it just comes up with this message:
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Export file created by EXPORT:V10.02.01 via conventional path
import done in WE8ISO8859P9 character set and AL16UTF16 NCHAR character set
Import terminated successfully without warnings.
No tables are exported.
If I specify the parameter imp system/password file=dept_export.dmp full=y log=dept_imp.log with the same dumpfile and it imports data from the dumpfile into my database.
I am not sure what could be wrong with my dumpfile or my imp command and its parameters.

Migrating image database in Informix 9.21 to Oracle 9i

I am going to be migrating an image database from Informix 9.21 to Oracle 9i and am needing to know
what Oracle9i has to offer as far as options in storing large media types - image, video, audio, etc...
Specifically, does Oracle have anything comparable to Informix' smart blobspace? Is it possible to migrate
image data from Informix to Oracle? I know the migration kits only are available up to Informix version 7.
What does interMedia offer?

Hi,
I was unable to reproduce your problem. I carried out the following steps in attempt to replicate the issue:
1. I launched the workbench, version 10.1.0.2, selecting the Oracle Lite "Default Repository".
2. Using the Oracle Enterprise Manager Console, I created a user "rtdb" with the password "rtdb" on my target Oracle 9i database.
3. I captured a test Informix database, generating its source and oracle models.
4. I then proceeded to migrate the database to Oracle and supplied my target Oracle9i database information in the "Migration Wizard, Step 1 of 4: Destination Database Details", supplying rtdb/rtdb as the username/password.
5. My test database migrated with no such error messages reported.
If you carried out the migration steps as I have outlined above, and are still experiencing issues with a "Failed to connect" error, I would contact support.
Regards,
Hilary

Response time much more in migrated AIX database than in Windows database

We migrated a 9.2.0.6 database from windows to AIX (on same oracle version). Initially we were getting really slow response on direct sqls and batch sqls fom application server. Then we tuned aix database a bit and got a better response time for direct sqls on aix database.
Now queries run faster on aix database than the db on windows.
However, the queries from applciation (ACCURATE application) are still twice slower on aix database compared to windows database.
Can anyone suggest a possible cause or tuning area?
We have checked on network level and found no bottlenecks.
Regards,
Garima

user650817 wrote:
We migrated a 9.2.0.6 database from windows to AIX (on same oracle version). Initially we were getting really slow response on direct sqls and batch sqls fom application server. Then we tuned aix database a bit and got a better response time for direct sqls on aix database.
Now queries run faster on aix database than the db on windows.
However, the queries from applciation (ACCURATE application) are still twice slower on aix database compared to windows database.
Can anyone suggest a possible cause or tuning area?Garima,
if you have particular queries that you know of that are behaving differently, you could start right away by comparing the execution plans and tracing the execution using the SQL trace facility and the "tkprof" trace file analyzer.
If you want to get an overview of the database performance, you should consider installing STATSPACK on both systems if you haven't done so yet and create snapshots to compare statspack reports from both systems for a representative time period. This way you can gather information about the top wait events and top SQLs of the periods analyzed.
By the way, how did you "migrate" the database? Did you use export/import to migrate? What about the statistics for the cost based optimizer, could these be different between the two systems or are you still using the rule based optimizer?
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Migrated the database to ASM storage .

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