doc.FAQ.ISuspectThatMyUserIsExperiencingPortOrNetworkingProblemsWhatDoIDo







Do firewall restrictions prevent a user from downloading our components?

  1. Test both HTTP and FTP links.
  2. Provide a DAV link to the file.
  3. Attempt to FTP the file to a user site.
  4. Attempt to email components to the user.
  5. Provide files to user via CD. (Requires Manager Approval.)

Do networking problems prevent transfer of a downloaded file to the target machine?

  1. Urge the user to seek assistance from the on-site network administrator.
  2. Tell the user to transfer the file(s) via CD or disk.

Do port problems prevent Multi-tier users from starting their Request Brokers?

  1. Log in to the machine that contains the Multi-tier server components.
  2. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the installation.
  3. Locate the [Protocol TCP] section.
  4. Locate the Listen parameter. (Release 1.x and 3.x users locate PortLow .)
  5. Close oplrqb.ini.
  6. Run netstat -a.
  7. If Listen or PortLow is occupied, assign a new port in oplrqb.ini.
  8. If Listen or PortLow is not occupied, this may not be a port problem.

Do users not know what ports to pass in data source names or connect strings?

  1. Inform users that the only OpenLink?-specific ports appear in the [Protocol TCP] section of the server component's .../openlink/bin/oplrqb.ini file. Any other port would be gleaned from database-related configuration files or utilities.

Do firewalls prevent Multi-Tier clients from contacting Multi-Tier Request Brokers?

  1. Login to the machine that contains the Multi-Tier server components.
  2. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the installation.
  3. Locate the [Protocol TCP] section. For example: 


    [Protocol TCP] 
PingWatchdog = No 
PingInterval = 600 
;IPAddress = 127.0.0.1 
PortLow = 5000 
PortHigh = 5020

  4. Make sure PortHigh is uncommented and set. PortHigh should equal PortLow + the number of concurrent connections granted by the license + a few extra ports.
  5. Record the PortLow - PortHigh range.
  6. Record the Listen port value. (Release 1.x and 3.x do not have Listen.)
  7. Close oplrqb.ini.
  8. Open the Listen and PortLow - PortHigh TCP ports on the firewall.
  9. Open UDP port 60001 -- in addition to those above -- to accommodate Release 1.x and Release 3.x drivers.

Do Multi-Tier port settings restrict the number of concurrent connections?

  1. Login to the machine that contains the Multi-Tier server components.
  2. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the installation.
  3. Locate the [Protocol TCP] section. For example: 


    [Protocol TCP] 
PingWatchdog = No 
PingInterval = 600 
;IPAddress = 127.0.0.1 
PortLow = 5000 
PortHigh = 5020

  4. Make sure PortHigh is uncommented and set. PortHigh should equal PortLow + the number of concurrent connections granted by the license + a few extra ports.
  5. Save changes and exit the file.
  6. Restart or reinitialize the Request Broker and test.