Problem with standby database & listener

[Stephen Andert]

Fellow dba's,   We have come across a weird problem with a standby database. Every time we issue "alter database mount standby database" on the standby database, the primary database fails to connect through listener. It becomes OK after primary database is shutdown and restarted — of course this can is not an acceptable solution since the standby will be opened every week for reporting.   Anyone experience this before?  Any direction would be appreciated.   Thanks             Stephen Andert Scottsdale, Arizona