IBM® Tivoli® Storage Manager for Advanced Copy Services, DB2 Universal Database™ (UDB) Integration module provides nearly instant back-up and recovery while minimizing the impact on critical business applications that run 24x7 with increased flexibility and high reliability to meet the data protection requirements of today's businesses. The first time you sign in to developerWorks, a profile is created for you, so you need to choose a display name. Keep up with the best and latest technical info to help you tackle your development challenges. This article examines the procedure for making a database backup using Tivoli Storage Manager, (TSM). A DB2 database is delivered with several utilities and database configuration parameters for TSM support. The DB2 database backup is being saved directly to the TSM server backup medium, without storing an intermediate copy on the local server, which results in a decline of storage costs and easy handle of large databases.
Each new backup has a unique name and newly created database backup do not deactivate previous backups.
Additional backup parameters used in performing backup (sessions, buffers, parallelism), are useful for tuning backup execution time. It would be helpful to obtain one additional right from the TSM administrator--the right to use a graphical TSM console, for a quick and informative summary of the TSM server backup content. The status for the current, active TSM connection and ongoing backup progress is managed by tracking changes in the TSM server log file. The DB2 system command db2adutl is used to directly manage database backup and database archived log files on the TSM. The DB2 system command db2adutil cannot be used to delete individual incremental or delta backups. The database archive log files are saved in a separate management class: archive management class. In the example above, deleting archived log files from the TSM server, using db2adutl was unsuccessfully terminated with the reason code 27. Tivoli Storage Manager's built-in API works readily with DB2 Content Manager and DB2 UDB without a need for any additional agents or any application development. Lily Goh works in technical pre-sales support for IBM Business Partners in the area of Tivoli, particularly the Tivoli Storage portfolio, providing consultation support for technical pre-sales questions. Allan Tham works as a DB2 Content Manager Technical Presales Support for Business Partners. As Steve Mills, senior vice president of IBM Software Group, once put it, "Next to people, information is a company's greatest asset. DB2 Content Manager enables objects to be migrated according to policies set by the administrators.
DB2 Library Server and Resource Manager most often run on different servers to ensure better scalability and performance.
Also, make sure that you are able to see the Resource Manager System Manage Storage (SMS), as shown in Figure 3:Figure 3. The objective in the first part of this article is to migrate aged objects from DASD to external storage, which requires Tivoli Storage Manager to be in place and integrated with DB2 Content Manager Resource Manager. Also, in this article, TSM 5.3's Integrated Solution Console (ISC) and Administration Center (AC) is not installed.
Since we need to make use of the tape, let's configure the tape before moving on to configure TSM. As we will be using the attached 4MM tape drive as a Tier 3 storage, we need to configure the drive on the OS level.
The TSM storage pools and policy for this article are configured as follows from the TSM command prompt. Should you have integration problems, refer to troubleshooting tips for TSM and DB2 Content Manager. Device manager is the interface between DB2 Content Manager Resource Manager and the underlying storage systems, such as filesystem, media archiver, TSM, and so on.
Choosing the device manager depends on the operating system where Resource Manager sits or products that integrate with Resource Manager. Note that the end user has no control over adding a new device manager (and rarely do you need to); most are disabled by default. The out-of-box device managers provided by DB2 Content Manager can be seen in the following table, listed in alphabetical order:Table 1. FIXED (stored in DASDs), TABLE (stored as BLOBs in RDBMS), and TSM (Tivoli Storage Manager), VC (Video Charger), and so on.
Migration policy is the travel path an objects takes from its creation to a long-term storage. Workstation collection is a logical grouping of related objects within the same migration policy and storage group. It is recommended to assign a different storage system for each storage group and a different storage group for each collection. Assume that the management decided to move data aged six months and earlier to external disks and seven years to tapes. Move to the next level of configuration using System Admin Client - System Manage Storage (SMS) configuration.
Beware of Tivoli Storage Manager incompatibility - What you will seeDB2 Content Manager support for Tivoli Storage Manager (TSM) 5.3 is added with Fixpack 1.
Follow these steps to configure Resource Manager to use TSM:Prior to configuring the SMS, it is best to back up the Resource Manager database. From System Manage Storage (SMS), right-click on Server Definitions to create a new one.Figure 11.
Checking on obj_actiondate from the RMOBJECTS table shows objects are migrated to external disks.Checking on q occupancy from the TSM admin console shows the total MB moved. To set different high and low migration thresholds for CMDISKTIER1A, use the steps below:Listing 24. You must ensure that the disk space for Tier 1 is sufficient to hold your objects for as long as you want it to.Listing 25. After three years, you can update the parameter "active=yes" for the schedules CMMIGRATESTART and CMMIGRATESTOP.Listing 26. Before migration, the 'q vol' for CMDISKTIER1A shows a percentage of filling status as below:Figure 21. During migration, you will see the following message from the 'dsmadmc -console':Figure 22. You can also see the following process when you type q pro from the TSM command prompt:Figure 23. There are other considerations in object storage management, such as when to engage threshold migration, what happens when DASDs are full, or how to use the overflow feature. Threshold, though a new feature, bases its migration of a volume on the threshold (default 95%). In order to cater to the overflow objects or primary volume unavailability, during storage system creation, you can assign which volume overflow object will go to.
Back to topBackup and recoveryBackup and recovery is essential to ensure little or no data is lost, such as in the event of media failure.
In this article, the backup and recovery discussed are cold (offline) and hot (online) backup using Tivoli Storage Manager (the recommended way) for a standalone DB2 Content Manager system.
The distributed Content Manager system backup strategies and considerations can be complex and therefore out of the scope of this article.
Since both cold and hot backups covered here make use of Tivoli Storage Manager (TSM) as the backup utility, there is the need to set up TSM prior to using it.
Normally a system backup is carried out when there are changes to the system, (the installation of new application or patches, for example). This is to enable a restore of the OS without having to reinstall all the application required.
To check your defined association, perform a q association, which should show you the result as follows:Figure 27. On AIX, just start the daemon in the background using the nohup command from the AIX command prompt:Listing 29.
Change the DB2 TSM parameters: Issue the commands db2 update db cfg for awt using TSM_MGMTCLASS CMCLASS. After successfully performing the steps above, you can now move on to perform cold and hot backup for DB2 Content Manager.


The implication of this backup method is that you can only recover to the last complete offline backup. To perform this backup for DB2 Content Manager, follow these steps:Disconnect external connections.
Resource Manager services - Resource Manager services include purger, migrator, replicator and stager.
Backup DB2 Content Manager databases - Issue the following two commands to backup icmnlsdb and rmdb databases.
To query the icmnlsdb image created for example, issue the command db2adutl query database icmnlsdb. Once databases are backed up, some important filesystems and configurations files need to be backed up as well.
For configuration files, some of these may need to be backed up on a regular basis or only when there are changes made to them. With all that mentioned above, the TSM q occupancy output will look something like the following:Figure 34.
During databases restore, for example, to restore Resource Manager database, use the command db2 restore db rmdb use tsm options "'-fromnode=techcm -fromowner=db2inst1'" taken at 200604072024 (outer double quotes).
Implementing hot backup for DB2 Content Manager affords business continuity and minimizes data loss or no loss of data if handled properly.
Since DB2 Content Manager consists of two databases in the minimum, you need to hot backup all databases in the manner mentioned above.
In this exercise setup, since we only have one Resource Manager, replace icmnlsdb with rmdb to perform online backup for Resource Manager database. During restore, there are only a few steps to carry out, as listed below:Identify the right image to use. Also, for log shipping to a DR site, for example, using online backup with the include logs option, restoring it requires LOGTARGET to be specified.
Are you using the IBM® Tivoli® family of products to manage your distributed environment?
Nanda Pilaka works as a Software Engineer with the Content Manager Business Partner Support team in Dallas, Texas. Suita Gupta is part of the i3000 Application Modernization team and provides technical support for ISVs interested in modernizing their iSeries applications. IntroductionIf you have a large number of DB2 Universal Database servers, and if your enterprise is already using Tivoli to manage other components such as your network, operating system, and security, you can also use Tivoli to assist you with management of your databases.
20050724132015To perform an online backup and restore, you must enable the database for roll-forward recovery using TSM.
DB20000I The RESTORE DATABASE command completed successfully.Online database backup and restore using TSMIn order to enable roll-forward recovery for your database you need to have a configured user exit program in place.
DB20000I The ROLLFORWARD command completed successfully.At this point, you have learned the basics of Tivoli architecture, setting up TSM, taking online and offline backups, restoring backups and doing rollfoward of logs. Let's proceed to learn how to use Tivoli to monitor DB2 databases.Back to topDatabase MonitoringDatabases are ubiquitous in all business applications today and are a major component of any enterprise software solution.
InformixDiscoveryHBONext, to enable IBM Tivoli Monitoring for Databases, you need to configure it for DB2. Restriction: The discovery cannot discover DB2 Extended Enterprise Edition databases, because they are considered to be partitioned. Copy the tar file onto your Tivoli Management Region (TMR) server in order to import the resource model.Once the file is copied, issue the wdmrm command. Backing up a database or table spaceRestoring a database or table spaceIn the Identify step, determine which parameters you need to monitor.
DB2 Apply Replication Status resource model: Monitors the status of the DB2 Apply component from IBM Replication. These advanced data protection solutions simplify configuration and operations with increased ease of use in the inherently complex environments in which the product is designed to operate. She was one of the key architects of IBM Tivoli Storage Manager for Advanced Copy Services and Copy Services Modules. He has been a part of the support and development teams and is currently serving as the architect for the Tivoli Storage Manager Back-up-Archive clients. This nodename will contain the federated namespace, which in-turn will contain all of the back-up objects related to the DB2 instance and database. Your display name must be unique in the developerWorks community and should not be your email address for privacy reasons. The database settings for the TSM management class, TSM node name, TSM owner and TSM password is taken from the TSM API environment configuration files. Functionality integrated in the db2adutil makes the TSM server content management possible. The db2adutil command syntax covers only full, tablespace or load copy backup delete operations. A default setting for the archive management class, affecting all archive files, causes them to never expire.
As stated before, a standard TSM configuration prohibits the immediately deletion of the archive log files from the TSM server, using db2adutil command, signaling for a delete command as not authorized.
Missing one archive log file from many of saved on the TSM server, entirely disables the recovery chain. This article describes the integration of DB2 Content Manager with TSM, focusing on object movement, backup and recovery, and encryption.
In fact, TSM is the only supported storage utility for DB2 Content Manager object migration. Lily is ITIL Foundation Certified in IT Service Management (EXIN), IBM Certified Deployment Professional for Tivoli Storage Manage,r as well as IBM Certified Database Associate in DB2 Universal Database. DB2 Content Manager plus DB2 Record Manager can fulfill your regulatory compliance requirements. In the event both filesystem and TSM volumes are assigned as overflow volumes, filesystem volume will take precedence over TSM. Let's simulate this scenario, assuming that objects stay six months in DASD, three years in external storage, and seven years in tapes. It's recommended that you use Tivoli Storage Manager (TSM) archive copy for object migration purpose.
Note that the migrator is a high-performance, multi-threaded process that you can schedule to start at specified time. In other words, end users will not realize where the document is sitting, either DASDs, external disk, or tape. The traditional date-based migration looks at the date objects, comparing to system date before a migration will take place. The defined DB2 Content Manager volume pointing to Tivoli Storage Manager is considered to be infinite in size. Once logretain is turned on, you need to do a full offline, or you will receive "Backup Pending" error.
Gone are the days where you have to separately ship log files and figure out which log files to use.
Issue the command db2 restore db icmnlsdb use tsm options "'-fromnode=techcm -fromowner=db2inst1'" taken at 20060410215555 without prompting (outer double quotes).
This article will show you the ways in which two Tivoli products can be used to administer your DB2 databases. This is covered in the section Online database backup and restore using TSM.Before restoring the database using the TSM backup, verify that the backup taken is restorable and readable.
This program will be responsible for archiving log files from your local disk to the TSM server, and also for retrieving the logfiles during the recovery stage. DMLinkJRE resultYou might want to create additional Tivoli administrators to manage each database environment.
This user ID will be used to monitor DB2.On Windows, you need to grant this user ID the permission to run a service called Tivoli-DB2Monitoring Service. From the list, select the endpoints where you want to run the discovery (that is, the machines that have DB2 installed), as shown in Figure 8. DB2 partition group manager creationHow is database monitoring performed?Database monitoring is performed through the use of resource models which take into account various database metrics to monitor the health of the database system.IBM Tivoli Monitoring Version 5, which provides the basic environment for IBM Tivoli Monitoring for Databases, uses a set of resource models to understand database health. For this complex environment, the product exploits snapshot capabilities of underlying storage subsystems, such as IBM Total Storage Disk Storage, to provide instant back-ups and reduce exposure to data loss.


He has been involved in many Tivoli Storage Manager projects including Microsoft® Windows® and NetWare system recovery, adaptive sub file back-up, and most recently, the Advanced Copy Services and Copy Services products. In the IBM documentation, IBM emphasized that database TSM parameters are designed in the first place for redirected database restore. Backup buffers are taken from the utility heap (util_heap_size) database manager memory area. Operations such a list, delete or retrieve database backups, load copy images and archived database logs are achievable without the need to use dedicated TSM client tools.
For deleting incremental and delta backups, we are obligated to use time options such as OLDER THAN or OLDER.
What's more, TSM supports a wide range of storage devices and heterogeneous platforms, which enhances the scalability of DB2 Content Manager. You can find out your TSM Server name by issuing q stat from Tivoli Storage Manager (TSM) command prompt. Server definition information Enabling TSM device manager: The device manager for Tivoli Storage Manager is ICMADDM. We'll cover crucial functions like database backup, recovery, and monitoring of your database. Specify the endpoints for the Execute Task dialog (you need to selectively execute to all endpoint objects that have the same JRE installation directory). Figure 7 shows the root desktop when only IBM Tivoli Monitoring for Databases components are installed. DB2 partition creation When you click Discover, the databases belonging to that instance will be listed as shown in Figure 13:Figure 13. The resource model contains rules or schemas that determine what data is to be accessed from an endpoint at runtime, and how this data is to be handled. It involves copying designated changes from one location (a source) to another (a target), and synchronizing the data in both locations. It reduces impact on the production environment by offloading data-movement to alternate hosts and provides a single point of control in the distributed environment for all back-up and restoration tasks to further simplify management and operations. Before joining IBM, she worked at BEA Systems as a consultant where she helped customers build and deploy solutions using BEA products.
These tasks must be performed for every DB2 Enterprise Server Edition database that needs to be backed up.
Nevertheless, I have seen many installations where some or all TSM database parameters were used, overriding settings provided over TSM API configuration. On the other hand, we can change these default settings, enabling the database administrator the purging rights for the database archive log files on the TSM server. She has led and managed numerous implementation projects ranging from IBM UNIX to Tivoli Storage, and has provided training for customers and IBM Business Partners. Prior to working on the i3000 support team, Suita worked with the Developer Relations DB2 Technical Support team on a variety of DB2 application development and administration issues. The Tivoli administrator that will manage the database environment needs to have these roles assigned to it. Each resource model obtains resource data from the endpoint it is distributed to, analyzes it using built-in logic, and proceeds to execute actions that are either built-in actions or user-defined. This article is intended for storage architects and administrators who are evaluating the implementation of the Advanced Copy Services. She started her career with Tata Consultancy Services in India where she worked on a variety of customer projects both at the system and application level. Step 1The user must first determine the number of physical host systems which define the DB2 Enterprise Server Edition instance and database and then set aside one or more separate systems, known as back-up hosts, to perform the back-up. This means that each time CMDISKTIER1A reaches 90% full, migration will start until it reaches 70% full.
This part of the series provides a high-level overview of configuration, back-up and restore operations. Offline backup using TSM Also, log on to TSM dsmadmc and issue the command q occupancy techcm to show disk space used.Figure 29. TSM occupancy check Note that if your TSM Server is on another machine, you need to use register node command to register your node. Therefore, the hosts responsible for the back-up of data cannot be the same hosts which are hosting the original DB2 UDB database partitions.Step 2For each database and back-up host, a corresponding node must be defined by the IBM Tivoli Storage Manager administrator. Typically, the node name corresponds directly to the host name but the example below uses different node names.
Customization would only be required if the feature is not provided by the resource model or if you would like to add some new features and functionality.
You also create a resource model from scratch, or you can use an existing resource model and modify it.Here is an example of DB2InstanceStatus resource model. Open the resource model, choose Modify action, modify the action to be performed, save it under a new name, and re-deploy the new resource model.The customized DB2InstanceStatus resource model will automatically start the DB2 service if it happens to fall over. The last task in the Configuration Wizard is to configure the IBM Enterprise Storage Server information.
The user must provide information about the primary and back-up copy service servers, the copy service server passwords, and the user LUN file.After the user successfully configures the three different components, the user needs to choose an alias which describes the configuration of the DB2 UDB database and instance. This could simply be the DB2 UDB database name (providing it is unique in all of the DB2 UDB instances), or the IBM Tivoli Storage Manager proxy target node name. This alias will be used in all of the back-up, restore and query operations for this DB2 UDB database and instance.After the user creates the alias name, the Configuration Wizard collects the information, write the configuration information to a set of files, and then send this set of files to the back-up master node. You can create a new storage policy for the DB2 node and provide this information while registering the node, or the node will be assigned to the default policy domain called STANDARD policy domain.In simple terms, a policy is a set of rules that determine how the backup must be managed, how many versions of the backup should be kept, and where the images should be stored. To set these variables, right-click the My Computer icon on the desktop, and select Properties.
It ensures that all participating nodes have supported levels of IBM Tivoli Storage Manager, DB2 UDB software, and operating system software. Step 3The master back-up node queries the database configuration on each of the application nodes to determine the DB2 database partitions. The database partitions are mapped to corresponding LUNs by first querying the database table spaces, converting the table spaces to the logical volumes and then mapping the logical volumes to the physical volumes. Step 4When the set of the database source LUNs is determined, the local snapshot manager determines a matching set of target LUN containers for the snapshot operation. The snapshot operation is then initialized to ensure that snapshot provider is available for use and source and target are in the valid state for snapshot operation.Back-up previewThe user can enter a “preview” flag for the back-up operation in order to determine if there are sufficient targets LUNs to create a local back-up.
The back-up nodes take this set of metadata and recreate the physical and logical volumes, and file systems on the target set of LUNs to ensure that the target set of LUNs become a point-in-time copy of the source set of LUNs. This is necessary for the next successful back-up operation or else there will be multiple set of storage management constructs, that is, file system and logical volume names when configuring subsequent target sets of LUNs resulting in back-up failure.Back-up completion statusThe back-up is completed pending any FlashCopy background copy processing. It ensures that all participating nodes have supported levels of the IBM Tivoli Storage Manager, DB2 UDB software, and operating system software. What do other back-up hosts do on restore?Note that if there were multiple back-up hosts configured, they are not contacted to participate during the restore operation.Step 4If the restore is being done from local media, the metadata information is sent to the participating database node for each database partition.
Each database node then verifies that the hardware configuration information and volume manager configuration information has not changed since the time the local back-up was taken. If configuration changes are detected, TSM for Advanced Copy Services will guide the user through appropriate actions based on the type of change.Step 5The snapshot operation is initialized to ensure that snapshot provider is available for use and source and target LUNs are in a valid state for a snapshot operation. Note that a snapshot for a restore operation is performed in the reverse direction of the back-up operation. If the back-up destination is from the IBM Tivoli Storage Manager server, no background copy processing is necessary.All the participating application hosts are then instructed to un-configure the set of source LUNs so that they are no longer available to prepare for a snapshot operation. After all application hosts have completed the image restore successfully, the database manager is restarted.Step 9 (to be performed by the user)The user must perform a database roll-forward recovery before using the database when restoring data from the local or TSM back-up destination. The database is available for use as soon as the restore command completes and the roll forward recovery is performed.
It simplifies operations by integrating management of snapshot-based back-ups with traditional back-ups, unified restore view, simplified user interface, and Configuration Wizard that guides the user through each step of the initial setup. IBM Tivoli Storage Manager for Advanced Copy Services, DB2 UDB Integration module is designed to simplify management of data in complex environments with near-zero downtime with instant back-up and restore capabilities.



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