System replication is better
SM36 Define job
In this step, a dialogue box prompts you to confirm the commit. If the user does not have permission to execute the transaction SPAM or the current queue has not yet been confirmed, the transaction stops SPAM with a message to that effect. CHECK_REQUIREMENTS In this step, different requirements for inserting are checked. There are the following reason that may cause this step to be cancelled: TP_CANNOT_CONNECT_TO_SYSTEM: tp cannot log in to the system database. QUEUE_NOT_EMPTY: There are incomplete OCS jobs in the tp buffer. You can view these jobs using the following tp command: tp SHOWBUFFER -D SOURCESYSTEMS= TAG=SPAM You cannot resume the processing of the queue until these jobs have been completely processed or deleted from the tp buffer. DISASSEMBLE In this step, files are extracted from the corresponding OCS files and placed in the /usr/sap/trans/data (UNIX) directory.
Using profile parameters, we can configure everything in the SAP system. Some parameters are dynamically modifiable, which means that they can be changed without restarting the system. However, these changes are not permanent, i.e. after a system restart, the pre-set profile parameters are used again. Other parameters, however, are static, i.e. only with a restart and only permanently modifiable. Most profile parameters for memory allocation are actually static. However, there is the possibility to adapt it dynamically with the report RSMEMORY. Read how to find out if a parameter is static or dynamic and how to use the RSMEMORY report to dynamically adjust the memory allocation parameters. RZ11 - Maintenance of profile parameters The transaction RZ10 gives us information about profiles, which in turn contain different profile parameters. In the transaction RZ11, however, it is possible to view information about individual parameters, provided that you know their name. As you can read in our Memory Parameter Post, the following 5 parameters are particularly important for memory management: abap/heap_area_total abap/heap_area_dia abap/heap_area_nondia ztta/roll_extension_dia ztta/roll_extension_nondia If you don't know exactly what a parameter might be called, it's worth using the F4 help here. For example, for the parameter abab/heap_area_dia, the RZ11 outputs: Description of the parameter abap/heap_area_dia in the RZ11 As you can see here, it is not a dynamic parameter. Now it is rather sorry if you want to test whether there is enough memory available to restart the system again and again. For this purpose, there is the RSMEMORY report. RSMEMORY - Test your memory allocation strategy Report RSMEMORY Report View No documentation or value help available here, but SAP documentation tells you how to use the report. This first distinguishes between dialogue and non-dialogue work processes. That is, in the first area you can set Extended Memory (Storage Class 1) and Heap Memory (Storage Class 2) for Dialogue Workprocesses, and in the second area you can set it for non-dialogue workprocesses.
Definition of general system parameters
Since jobs and backups should run at set times for organizational or technical reasons, automating them is a good idea. In simple, clear system environments, many SAP Basis administrators help themselves with SAP CPS (Central Process Scheduling) and simple ABAP batch jobs that start operations or other jobs. Since the desires and the system environments usually grow continuously, this approach becomes complex and confusing over time and troubleshooting often becomes difficult. As a result, maintainability often falls by the wayside and error-proneness can increase. If different jobs are strung together to form chains, further problems arise.
To ensure audit-proof traceability, you should only allow software components and namespaces to be changed on a production system in exceptional cases and for a limited period of time. This should only be done restrictively to prevent manipulation at the production level.
For administrators, a useful product - "Shortcut for SAP Systems" - is available in the SAP basis area.
If the selection set contains composite roles, the comparison takes place for all single roles contained in it.
Understanding the structure and functioning of the system is especially important for IT administration. It is not for nothing that "SAP Basis Administrator" is a separate professional field. On the page www.sap-corner.de you will find useful information on this topic.
With such a large and mostly living system landscape, it is normal that individual systems are dismantled from time to time.