Technical system copy for the upgrade
Automation of homogeneous SAP system copies
One example: In an SAP environment, a system copy must be performed for various reasons - until now manually. Such a copy is always required when the QA system of a multi-level SAP architecture has to be brought up to the status of the current production system: Be it for testing new applications or during a release upgrade, for maintenance purposes or for updating the quality assurance and test system. In principle, the task proves to be simple: All files belonging to the clean configuration and implementation of the SAP environment must be transferred from the productive systems to the quality assurance system in the correct order and in the correct directories.
Of course, time savings also mean money savings. In addition, these processes for system copying using such automation tools can be planned, standardized and always run at a high level of process quality. Especially the latter is of great importance in SAP Basis departments (and of course also for service providers).
Food for thought for another productive system: until when must the system be identical, keyword: transaction log
Even if the target system is not used for production in an update scenario based on a system copy, it is of central importance for developers and thus also the software lifecycle of the production system. That's why you should avoid upgrade downtime in both the production source system and the non-production target system. Production system downtime depends primarily on the method you use to create the image of the production data to be used in the target system. This image must be a transferable database image - for example, a database export, a backup copy, or an array-based reconciliation. To eliminate downtime in the production system and minimize the impact on application performance-regardless of the size of the production data reconciliation-you can use, for example, HP StorageWorks System Copy for SAP (HP System Copy), which has a disk array-based replication capability. Downtime in the target system depends on the following factors, among others: The time required to restore production data reconciliation in the target system The amount of pre- and post-processing in the target system With HP System Copy, images of production data can be created in minutes, with each step between shutdown and reboot of the target system occurring automatically. However, after the reboot, the target system is not immediately ready for use, as additional steps must first be performed (see description below).
When executing a system copy, all tables, processes, databases, etc. are taken into account when copying. Logical system names must also be converted (using the BDLS trasaction code). The process of a system copy usually does not change. If no structural changes have been made to the SAP systems involved, the process is even 100% identical. Due to the very high repeatability of the nevertheless complex process, it is advisable to automate it to a large extent.
"Shortcut for SAP Systems" can considerably simplify and shorten a number of activities within the scope of a system copy or a system refresh. By using this application in conjunction with the information on system-specific tables from the PCA tool, the system-specific data can be backed up and restored after the system copy / system refresh. As a result, many of the activities mentioned here regarding data backup / restore can be performed much more easily; the creation of screenshots and the subsequent manual restoration of the state documented in this way can then be completely eliminated.
On www.sap-corner.de you will also find useful information about SAP basis.
SAP production system copies are created for a variety of reasons, including: - Generating a new non-production system for short- or long-term use - Updating an existing non-production system An SAP system copy is called homogeneous if the source and target operating and database systems are identical.
Regardless of the storage size, this process takes only a few seconds.