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  1.                                                                                 
  2. PRINT SELECTION FOR APAR - II06558 93/04/27                                     
  3.            PIN INFO-PC-LIB-102 II06558-IN-INCORROUT                             
  4. F   -     -     -                                                               
  5. LINK STATIONS REQUIRED FOR CM TO RDS USING SQLLOO   CMINFO                      
  6.                                                                                 
  7. END OF ABSTRACT   FESN5NFO000-000                                               
  8. REPORTED RELEASE    R001                                                        
  9. ERROR DESCRIPTION:                                                              
  10. +-------------------------------------------------------------+                 
  11. | II06558                                                                       
  12. |                                                             |                 
  13. |          COMMUNICATIONS MANAGER INFORMATION APAR            |                 
  14. |                       EE 1.3                                |                 
  15. |                                                             |                 
  16. |        CALCULATE THE LINK STATIONS REQUIRED FOR CM          |                 
  17. |        RDS USING THE SQLLOO TRANSMISSION MODE               |                 
  18. |                                                             |                 
  19. |LAST UPDATE:  12/17/92                          BY: ATD      |                 
  20. |                                                             |                 
  21. |PURPOSE:  THIS INFORMATION APAR PROVIDES INFORMATION ON      |                 
  22. |          RDS USING SQLLOO.                                  |                 
  23. +-------------------------------------------------------------+                 
  24. |                                                                               
  25. |  OVERVIEW                                                                     
  26. |                                                                               
  27. |    1. FREQUENT PROBLEMS AND SOLUTIONS.                                        
  28. |                                                                               
  29. +-------------------------------------------------------------+                 
  30. |    1. FREQUENT PROBLEMS AND SOLUTIONS.                      |                 
  31. +-------------------------------------------------------------+                 
  32. |  12/17/92                                                                     
  33. |  PROBLEM:  ERROR QRW2272 0003 00000005 IS RECEIVED WHEN                       
  34. |            ATTEMPTING TO ACCESS A REMOTE DATA SERVICES                        
  35. |            ENVIRONMENT USING SQLLOO AS THE TRANSMISSION                       
  36. |            MODE. THIS IS CAUSED BY AN INSUFFICENT NUMBER                      
  37. |            OF LINK STATIONS BEING DEFINED.                                    
  38. |  SOLUTION: CALCULATE THE CORRECT NUMBER OF NETBIOS,                           
  39. |            APPC (SNA), AND IEEE 802.2 LINK STATIONS                           
  40. |            USING THE FORMULA BELOW.                                           
  41. |                                                                               
  42. |  FORMULA:  SUBTRACT NETBIOS AND APPC (SNA) LINK STATIONS                      
  43. |            FROM IEEE 802.2 TOTAL. MULTIPLY BY 80%. THAT IS                    
  44. |            HOW MANY SQLLOO CAN USE. IF THAT NUMBER IS ZERO                    
  45. |            OR SMALLER, SQLLOO WILL NOT FUNCTION.                              
  46. |                                                                               
  47. |            THERE IS AN ENTITY ON YOUR DLC CARD WHICH CONTROLS                 
  48. |            THE ACTUAL CONNECTION TO ANOTHER WORKSTATION (LINK                 
  49. |            STATIONS). WHEN A REQUESTER CONNECTS WITH A SERVER                 
  50. |            THERE IS A PHYSICAL PATHWAY ESTABLISHED BETWEEN                    
  51. |            THEM, AND EACH WORKSTATION MUST USE A LINK STATION                 
  52. |            TO CONTROL THE CONNECTION. THE REQUESTER MAY                       
  53. |            THEN START UP MANY PROGRAMS TO QUERY DATABASES ON                  
  54. |            THE SERVER (EACH OF WHICH IS A SESSION), BUT ALL                   
  55. |            OF THE SESSIONS GO OVER THE SAME LINK.                             
  56. |                                                                               
  57. |            THE ONE EXCEPTION TO THIS IS, IF YOU ARE USING                     
  58. |            DIFFERENT TRANSMISSION MODES (APPC,SQLLOO). IN                     
  59. |            THE CASE WHERE YOU HAVE MANY SESSIONS BETWEEN A                    
  60. |            REQUESTER AND A SERVER SOME APPC SESSIONS AND SOME                 
  61. |            SQLLOO SESSIONS, YOU WILL NEED TWO LINKS (AND TWO                  
  62. |            LINK STATIONS ON EACH WORKSTATION) - ONE FOR ALL                   
  63. |            THE APPC SESSIONS AND ONE FOR THE SQLLOO SESSIONS.                 
  64. |                                                                               
  65. +-------------------------------------------------------------+                 
  66. |KEYWORDS: CMINFO 566933602 R130 CM RDS SQLLOO                |                 
  67. |          RDS SQLLOO QRW2272 0003 00000005 LINK STATIONS     |                 
  68. +-------------------------------------------------------------+                 
  69. COMMENTS:                                                                       
  70. SEE UPDATE ABOVE                                                                
  71. CIRCUMVENTION:                                                                  
  72. REPINNED 92/12/17  RALFS/RHB                                                    
  73. 92/12/17,UNKNOWN                                                                
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