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  • I Suspect That My User Is Experiencing Port Or Networking Problems. What Do I Do? -- Answer
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  • ODBC
  • JDBC
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  • Port and networking problems arise in a variety of contexts. Choose the context that corresponds to your user: 1. Do firewall restrictions prevent a user from download OpenLink software? Test both HTTP and FTP links. Provide a DAV link to the file. Attempt to FTP the file to a user site. Attempt to email components to the user. Provide files to user via CD. (Requires Manager Approval.) 2. Do networking problems prevent transfer of an OpenLink download to the target machine? Urge the user to seek assistance from the on-site network administrator. Tell the user to transfer the file(s) via CD or disk. 3. Do port problems prevent Multi-tier users from starting their Request Brokers? Login to the machine that contains the Multi-tier server components. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the OpenLink installation. Locate the [Protocol TCP] section. Locate the Listen parameter. (1.x and 3.x users locate PortLow.) Close oplrqb.ini. Run netstat -a. If Listen or PortLow is occupied, assign a new port in oplrqb.ini. If Listen or PortLow is not occupied, this may not be a port problem. 4. Do users not know what ports to pass in OpenLink data source names? 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. 5. Do firewalls prevent Multi-Tier clients from contacting Multi-Tier Request Brokers? Login to the machine that contains the Multi-Tier server components. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the OpenLink installation. Locate the [Protocol TCP] section. For example: [Protocol TCP] PingWatchdog = No PingInterval = 600 ;IPAddress = 127.0.0.1 PortLow = 5000 PortHigh = 5020 Make sure PortHigh is uncommented and set. PortHigh should equal PortLow + the number of concurrent connections granted by the license + a few extra ports. Record the PortLow-PortHigh range. Record the Listen port value. (OpenLink 1.x and 3.x do not have Listen.) Close oplrqb.ini. Open the Listen and PortLow-PortHigh TCP ports on the firewall. Open UDP port #60001--in addition to TCP PortLow-PortHigh--to accommodate 1.x and 3.x drivers. 6. Do Multi-Tier port settings restrict the number of concurrent connections? Login to the machine that contains the Multi-Tier server components. Use a text editor to open the oplrqb.ini file that resides in the /bin sub-directory of the OpenLink installation. Locate the [Protocol TCP] section. For example: [Protocol TCP] PingWatchdog = No PingInterval = 600 ;IPAddress = 127.0.0.1 PortLow = 5000 PortHigh = 5020 Make sure PortHigh is uncommented and set. PortHigh should equal PortLow + the number of concurrent connections granted by the license + a few extra ports. Save changes and exit the file. Restart or reinitialize the Request Broker and test.
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