Waits by Wait Class - Database Time Spent Waiting (%) - Error

Database: 11gR2 on Windows Server.

My OEM shows following messages:

Waits by Wait Class - Database Time Spent Waiting (%) - Metrics "Database Time Spent Waiting (%)" is at 53.41545 for event class "Network"

Waits by Wait Class - Database Time Spent Waiting (%) - Metrics "Database Time Spent Waiting (%)" is at 49.40507 for event class "Other"

Can someone please help me to resolve these issues.

Note: This is my DataGuard environment with two databases: Primar and Standby. I am getting this error on Primary Database. On Primary database I have schecdule a procedure, that execute every 1 hour. This procedure deletes old data and inserts 100 rows in test table.