About Database Connection
We install Oracle Database 23c in CentOS Stream8. Now, we can not link developer in system.
Subnet1.xxx のDeveloper → Subnet1.A :OK
Subnet1.xxx のDeveloper → Subnet2.B :IO ERROR
Subnet2.xxx のDeveloper → Subnet2.B :OK
Subnet2.xxx のDeveloper → Subnet1.A :IO ERROR
However, SSH and Telnet can contnect on the other hard. Only developer can not link.