Why SAP System Copy?
SAP
recommends that you perform a system copy if you are planning to set up a test
system, demo system, or training system.
You must also perform a system copy
if you want to change your operating system or your database. For more
information about system copies, see SAP Service Marketplace at http://service.sap.com/systemcopy.
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Up until
NetWeaver 04 (SAP Web Application Server 6.40), it was only possible for you
to perform a system copy for an ABAP system.
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As of
NetWeaver 04 SR1 (SAP Web Application Server 6.40 SR1), you also have the
option of performing a system copy for a Java add-in of an ABAP system, as
well as for a Java standalone system.
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As of
NetWeaver 7.0, you can copy a mixed ABAP Stack and Java Stack system in a
single operation, not just standalone ABAP or Java systems.
Difference between Homogeneous System Copy and Heterogeneous System Copy
Homogeneous System Copy
During the system copy you use the same operating system and database platform as the original system.
You perform a homogeneous system copy if your target system is on the same operating system and database system as your source system. The database contents are copied from the source system to the target system.
You perform a homogeneous system copy if your target system is on the same operating system and database system as your source system. The database contents are copied from the source system to the target system.
Heterogeneous System Copy
During the system copy, you change either the operating system or the database system, or both. Heterogeneous system copy is a synonym for migration.
You perform a heterogeneous system copy if you want to change the operating system or database system. Migration is another term for a heterogeneous system copy.
You perform a heterogeneous system copy if you want to change the operating system or database system. Migration is another term for a heterogeneous system copy.