What is a prerequisite for a system replication when the development (DEV) system and the quality (QA) system are installed on the secondary site? Please choose the correct answer.

What is a prerequisite for a system replication when the development (DEV) system and the quality (QA) system are installed on the secondary site? Please choose the correct answer.
A . The DEV and QA systems must be online during system takeover.
B . The preload of tables must be switched off.
C . The global allocation limit must be identical.
D . The SIDs and instance numbers must be identical.

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Answer: B