How to communicate between applications

Is it possible to have one java application cause another java applicalion to go into/out of a sleep or wait state. Both application are on the same machine.
What I am trying to do is have a program which will wait/sleep (using little on no processing power)
untill a database trigger(oracle) or another java program wakes it up.
Regards
Sam

A simple way will be to use communication through sockets. The sleeping aplication will listen to a specific port and when it receives a signal will "wake up".

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Hold down the cmd (⌘) key and briefly press the tab key (⇥) then use the left/right arrow keys to select the application you wish to switch to. When done release the cmd key.

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I have a new ME3400 series switch with IOS (me340x-metrobase-mz.122-37.SE1), it has 24 fastethernet and 2 gig fiber uplinks
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On forums the solution is to declare them as member of community vlan.
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Switch#sh run
Building configuration...
Current configuration : 2088 bytes
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname Switch
no aaa new-model
system mtu routing 1500
ip subnet-zero
no file verify auto
spanning-tree mode rapid-pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
vlan 100
private-vlan primary
private-vlan association 101-102
vlan 101
private-vlan isolated
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private-vlan community
interface FastEthernet0/1
switchport private-vlan host-association 100 101
switchport mode private-vlan host
interface FastEthernet0/2
switchport access vlan 102
switchport private-vlan host-association 100 102
switchport mode private-vlan host
interface FastEthernet0/3
switchport private-vlan host-association 100 102
switchport mode private-vlan host
interface FastEthernet0/4
shutdown
interface FastEthernet0/5
interface FastEthernet0/6
shutdown
interface FastEthernet0/7
shutdown
interface FastEthernet0/8
shutdown
interface FastEthernet0/9
shutdown
interface FastEthernet0/10
shutdown
interface FastEthernet0/11
shutdown
interface FastEthernet0/12
shutdown
interface FastEthernet0/13
shutdown
interface FastEthernet0/14
shutdown
interface FastEthernet0/15
shutdown
interface FastEthernet0/16
shutdown
interface FastEthernet0/17
shutdown
interface FastEthernet0/18
shutdown
interface FastEthernet0/19
shutdown
interface FastEthernet0/20
shutdown
interface FastEthernet0/21
shutdown
interface FastEthernet0/22
shutdown
interface FastEthernet0/23
shutdown
interface FastEthernet0/24
shutdown
interface GigabitEthernet0/1
port-type nni
interface GigabitEthernet0/2
port-type nni
interface Vlan1
ip address 192.168.0.1 255.255.255.0
no ip route-cache
interface Vlan100
ip address 10.10.100.1 255.255.255.0
no ip route-cache
interface Vlan101
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no ip route-cache
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interface Vlan102
no ip address
no ip route-cache
shutdown
no ip http server
control-plane
line con 0
line vty 5 15
end
Any help will be apritiated and thanks in advance

njb7ty wrote:
Create two separate connection pools. Each one has its own url/userID/password to its own database. Example: If both are Oracle databases, you need the JDBC driver jar file in your classpath. You'll have to research how to create a connection pool.That is a pretty specific answer. Certainly inappropriate, for example, if the OP is attempting to just move records. Or compare records.
Probably ony useful if the OP wants to present to a client data from two databases. But since the OP said "communicate" that seems unlikely.

A problem that how to communicate between PLC S7-300 and IA Server

The PC running the OPC server is connected to PLC S7-300 via the RS232 serial port and the Siemens RS232-MPI adapter (product no. 6ES7972-0CA23-0XA0).
But I encounter such problem when I create an object(S7_HMI)in IA Server:
Step 1：
links:http://www.simwe.com/forum/upload/2005/04/30/87472755.jpg
Error message:
Protocol error:Unexpected response from PLC
links:http://www.simwe.com/forum/upload/2005/04/30/48471774.jpg
When I communicate between S7-300 and PC by LOOKOUT 5.1,it works well.
Could someone give me help? Thanks a lot.帖子被qzxin在05-08-2005 04:54 AM时编辑过了
帖子被qzxin在05-08-2005 04:56 AM时编辑过了

First of all, Thank You very much for Your answer.
I'm using the TS Adapter that make the conversion from MPI to the serial bus.
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Look at, http://forum.java.sun.com/thread.jsp?forum=54&thread=262144

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How to communicate between applications

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