Migrate large database to MAA, minimum downtime

we have 1 stand alone production db on stand alone linux server, the plan is to move to MAA with minimum down time.
are there any docs on how to migrate?
do I need to create physical or logical standby?
we not using grid is thats a problem ?
we are tlaking about 2TB database here.
v11.2 , linux 5
primary db is on virtual server so we also moving platform !

user9198889 wrote:
we have 1 stand alone production db on stand alone linux server, the plan is to move to MAA with minimum down time.
are there any docs on how to migrate?
do I need to create physical or logical standby?
we not using grid is thats a problem ?
we are tlaking about 2TB database here.
v11.2 , linux 5
primary db is on virtual server so we also moving platform !Hi,
I can only advise and help you, if you have an idea of how to perform this work.
These questions are not issues or doubts, but his work.
Try google about it, if you have any question about specific doubt, we can help you.
http://www.oracle.com/technetwork/database/features/availability/maa-090890.html

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Sql Server Management Assistant (SSMA) Oracle okay for large database migrations?

All:
We don't have much experience with the SSMA (Oracle) tool and need some advice from those of you familiar with it. We must migrate an Oracle 11.2.0.3.0 database to SQL Server 2014. The Oracle database consists of approximately 25,000 tables and 30,000
views and related indices. The database is approximately 2.3 TB in size.
Is this do-able using the latest version of SSMA-Oracle? If so, how much horsepower would you throw at this to get it done?
Any other gotchas and advice appreciated.
Kindest Regards,
Bill
Bill Davidson

Hi
Bill,
SSMA supports migrating large database of Oracle. To migrate Oracle database to SQL Server 2014, you could use the latest version:
Microsoft SQL Server Migration Assistant v6.0 for Oracle. Before the migration, you should pay attention to the points below.
1.The account that is used to connect to the Oracle database must have at least CONNECT permissions. This enables SSMA to obtain metadata from schemas owned by the connecting user. To obtain metadata for objects in other schemas and then convert objects
in those schemas, the account must have the following permissions: CREATE ANY PROCEDURE, EXECUTE ANY PROCEDURE, SELECT ANY TABLE, SELECT ANY SEQUENCE, CREATE ANY TYPE, CREATE ANY TRIGGER, SELECT ANY DICTIONARY.
2.Metadata about the Oracle database is not automatically refreshed. The metadata in Oracle Metadata Explorer is a snapshot of the metadata when you first connected, or the last time that you manually refreshed metadata. You can manually update metadata
for all schemas, a single schema, or individual database objects. For more information about the process, please refer to the similar article:
https://msdn.microsoft.com/en-us/library/hh313203(v=sql.110).
3.The account that is used to connect to SQL Server requires different permissions depending on the actions that the account performs as the following:
• To convert Oracle objects to Transact-SQL syntax, to update metadata from SQL Server, or to save converted syntax to scripts, the account must have permission to log on to the instance of SQL Server.
• To load database objects into SQL Server, the account must be a member of the sysadmin server role. This is required to install CLR assemblies.
• To migrate data to SQL Server, the account must be a member of the sysadmin server role. This is required to run the SQL Server Agent data migration packages.
• To run the code that is generated by SSMA, the account must have Execute permissions for all user-defined functions in the ssma_oracle schema of the target database. These functions provide equivalent functionality of Oracle system functions, and
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• If the account that is used to connect to SQL Server is to perform all migration tasks, the account must be a member of the sysadmin server role.
For more information about the process, please refer to the similar article:
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Move large database to other server using RMAN in less downtime

Hi,
We have large database around 20TB. We want to migrate (move) the database from one server to other server. We do not want to use standby option.
1)     How can we move database using RMAN in less downtime
2)     Other than RMAN is there any option is available to move the database to new server
For option 1 (restore using RMAN),
Whether below options are valid?
If this option is valid, how to implement this?
1)     How can we move database using RMAN in less downtime
a)     Take the full backup from source (source db is up)
b)     Restore the full backup in target (source db is up)
c)     Take the incremental backup from source (source db is up)
d)     Restore incremental backup in target (source db is up)
e)     Do steps c and d, before taking downtime (source db is up)
f)     Shutdown and mount the source db, and take the incremental backup (source db is down)
g)     Restore last incremental backup and start the target database (target is up and application is accessing this new db
database version: 10.2.0.4
OS: SUN solaris 10
Edited by: Rajak on Jan 18, 2012 4:56 AM

Simple:
I do this all the time to relocate file system files... But the principle is the same. You can do this in iterations so you do not need to do it all at once:
Starting 8AM move less-used files and more active files in the afternoon using the following backup method.
SCRIPT-1
RMAN> BACKUP AS COPY
DATAFILE 4 ####"/some/orcl/datafile/usersdbf"
FORMAT "+USERDATA";
Do as many files as you think you can handle during your downtime window.
During your downtime window: stop all applications so there is no contention in the database
SCRIPT-2
ALTER DATABASE DATAFILE 4 offline;
SWITCH DATAFILE 4 TO COPY;
RECOVER DATAFILE 4;
ALTER DATABASE DATAFILE 4 online;
I then execute the delete of the original file at somepoint later - after we make sure everything has recovered and successfully brought back online.
SCRIPT-3
DELETE DATAFILECOPY "/some/orcl/datafile/usersdbf"
For datafiles/tablespaces that are really busy, I typically copy them later in the afternoon as there are fewer archivelogs that it has to go through in order to make them consistent. The ones in the morning have more to go through, but less likelihood of there being anything to do.
Using this method, we have moved upwards 600G at a time and the actual downtime to do the switchover is < 2hrs. YMMV. As I said, this can be done is stages to minimize overall downtime.
If you need some documentation support see:
http://docs.oracle.com/cd/E11882_01/server.112/e18951/asm_rman.htm#CHDBDJJG
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Dear Experts,
We are planning for the SAP EHP7 update for our system. Please find the system details below
Source system: SAP ERP6.0
OS: AIX
DB: Oracle 11.2.0.3
Target System: SAP ERP6.0 EHP7
OS: AIX
DB: 11.2.0.3
RAM: 32 GB
The main concern over here is the DB size. It is approximately 3TB. I have already gone through forums and notes it is mentioned the DB size is not having any impact on the SAP EHP update using SUM. However am stil thinking it will have the impact in the downtime phase.
Please advise on this.
Regards,
Raja. G

Hi Raja,
The main concern over here is the DB size. It is approximately 3TB. I have already gone through forums and notes it is mentioned the DB size is not having any impact on the SAP EHP update using SUM. However am stil thinking it will have the impact in the downtime phase.
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i have one large database contains thousands of tables in MS SQL Server as ".mdf " format. Now i need to migrate this database to Pointbase database.
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I was unable to reproduce your problem. I carried out the following steps in attempt to replicate the issue:
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How to migrate ACS Database

Hi,
I have a CiscoSecure ACS v2.6 for Windows 2000/NT running on my network, Recently we've bought the appliance CiscoSecure ACS Release 4.1(1) Build 23.
Now, Can I migrate my database from ACS v2.6 for Windows 2000/NT to the appliance ACS Release 4.1(1) ?
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Leonardo,
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Problem with large databases.

Lightroom doesn't seem to like large databases.
I am playing catch-up using Lightroom to enter keywords to all my past photos. I have about 150K photos spread over four drives.
Even placing a separate database on each hard drive is causing problems.
The program crashes when importing large numbers of photos from several folders. (I do not ask it to render previews.) If I relaunch the program, and try the import again, Lightroom adds about 500 more photos and then crashes, or freezes again.
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Christopher,
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How can we suggest a new DBA OCE certification for very large databases?

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What web site, or what phone number can we call to suggest creating a VLDB OCE certification.
The largest databases that I have ever worked with barely over 1 Trillion Bytes.
Some people told me that the results of being a DBA totally change when you have a VERY LARGE DATABASE.
I could guess that maybe some of the following topics of how to configure might be on it,
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Thanks Roger

I wish there were some details about the OCE data warehousing.
Look at the topics for 1Z0-515. Assume that the 'lightweight' topics will go (like Best Practices) and that there will be more technical topics added.
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Describe the benefits of a data warehouse
Describe the technical characteristics of a data warehouse
Describe the Oracle Database structures used primarily by a data warehouse
Explain the use of materialized views
Implement Database Resource Manager to control resource usage
Identify and explain the benefits provided by standard Oracle Database 11g enhancements for a data warehouse
Parallelism
Explain how the Oracle optimizer determines the degree of parallelism
Configure parallelism
Explain how parallelism and partitioning work together
Partitioning
Describe types of partitioning
Describe the benefits of partitioning
Implement partition-wise joins
Result Cache
Describe how the SQL Result Cache operates
Identify the scenarios which benefit the most from Result Set Caching
OLAP
Explain how Oracle OLAP delivers high performance
Describe how applications can access data stored in Oracle OLAP cubes
Advanced Compression
Explain the benefits provided by Advanced Compression
Explain how Advanced Compression operates
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Explain Oracle's overall approach to data integration
Describe the benefits provided by ODI
Differentiate the components of ODI
Create integration data flows with ODI
Ensure data quality with OWB
Explain the concept and use of real-time data integration
Describe the architecture of Oracle's data integration solutions
Data mining and analysis
Describe the components of Oracle's Data Mining option
Describe the analytical functions provided by Oracle Data Mining
Identify use cases that can benefit from Oracle Data Mining
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Exadata
Describe the architecture of the Sun Oracle Database Machine
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When I go to Central Admin > Upgrade and Migration > Manage Databases Upgrade Status, I have 2 content databases which have the status:
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How can I determine which sites are not completely upgraded?

Manage Databases Upgrade Status will provide you all active and offline DB details, you can get same result
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(verify all customizations referenced within the content database are also installed in the web application. This cmdlet can be issued
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Use the Upgrade-SPContentDatabase cmdlet
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Upgrade-SPContentDatabase WSS_Content
reference:
http://technet.microsoft.com/en-us/library/ff607813(v=office.15).aspx
http://technet.microsoft.com/en-us/library/ff607941(v=office.15).aspx
If my contribution helps you, please click Mark As Answer on that post and
Vote as Helpful
Thanks, ShankarSingh(MCP)

Migration oracle database 8.1.7.3 to 10.2.0.2

Hi,
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With RMAN or copy it's not possible because the database version are different.
The solution is the export/import but it's probably too long.
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http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14238/toc.htm
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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).
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Microsoft provide a migration assistant for DB2 to SQL Server:
http://www.microsoft.com/en-us/download/details.aspx?id=45296
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Neeraj Goel

Hi Neeraj,
This forum is dedicated to Migrating from SQLServer and other third party databases to Oracle.
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Migrate large database to MAA, minimum downtime

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