Symptom
After a system refresh/system copy, the transaction code ST03N is showing the old data from the source system.
Solution
1. Refer to SAP Note 1179929
The data from other systems can be deleted from the tables SWNCMONI and SWNCMONIINDEX using the function module SWNC_COLLECTOR_CLEAN_SWNCMONI that is provided.
Important! If the parameter “Reset” is set to “X” during the call of SWNC_COLLECTOR_CLEAN_SWNCMONI, all entries are deleted from SWNCMONI and SWNCMONIINDEX; otherwise, only the data from other systems is deleted.
Alternatively use the following steps,
2. Execute transaction code ST03N. Under Expert Mode > Collector and Performance DB > Workload Collector Database > Contents. On the right panel, highlight on all host/instance, click delete. This will remove old data.
3. On your right panel, select the host/instance, and choose the Delete (dustbin icon) to delete the content of the NW Statistics Database.
标签：code,Old,SWNCMONI,ST03N,after,system,deleted,data From： https://www.cnblogs.com/weikui/p/17737857.html