Answer Posted / s. manzoor ahamed

1. Type of Backups option in oracle are
Cold backup / Hot (Online) backup, Logical backups
using Exp and imp client utilities, RMAN Backups.

2. Only Cold backup can be taken and no other options.

3. No. Need to take full consistent backup.

4. No. You can't take online backup if the db is configured
in Noarchivelog mode.

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I got an error SQL1042C. An unexpected system error occurred. Explanation: A system error occurred. One possible reason for this error is that the database manager is not installed correctly or the environment is not set up correctly. On OS/2, while trying to start the database manager, a very common reason for this error is a corrupted NET.ACC file. The command cannot be processed. The tables and views would not be opened. What is the way to open the dataase? pls help me

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