You have correctly identified the problem. Be sure to identify whether a critical dbspace is affected because this determines the kind of restore to use.

Critical dbspaces are essential for the database server to function properly. Critical dbspaces in the database configured for the R/3 System are rootdbs , physdbs , and logdbs . Non-critical dbspaces are all other dbspaces.

1. Choose the correct kind of restore, depending on what the problem is. You need to perform a full-system cold restore if the problem is due to any of the following:

· Critical dbspace is down

· Both critical and non-critical dbspaces are down

· A logical error caused by an application program occurred after a known point in time

Otherwise, if the database server was not brought down by the fault, then presumably the problem is with a non-critical dbspace and you can perform a partial-system warm restore.



Generally, SAP does not recommend you to perform a partial-system warm restore, unless you are sure that the problem only affects a small number of non-critical dbspaces. In any case, the R/3 System is not properly functional if a dbspace fails, and it might be possible that other dbspaces are affected as well. Therefore, the safest and most effective procedure is to close down the database and do a cold restore.

2. Choose the appropriate restore, depending on what kind of restore you need and what your normal data recovery tool is: