Connection Analysis situations

The predefined situations in this category monitor the efficiency of MRO and ISC links between regions of a CICSplex and resources of CICS regions. These resources include storage, files, queues, and enqueues. A description and formula for each of these situations follow.

CICSplex_Sympathy_Sickness
Sympathy sickness occurs when the performance of one CICS region is affected as a result of problems in an adjoining CICS region.

Use the Connections analysis workspace to examine the status of the connection between CICS and its remote regions. Check that the remote systems are available with connections that are in service.

Formula

If 
 the value of the attribute Transaction_Rate is less than 10 
and 
 the value of the attribute
Worst_ISC_Connection_Percent_of_Links_in_Use equals 100 
and 
 the value of the attribute Worst_ISC_Connection_Number_of_AIDs is
greater than 0 
or 
 the value of the attribute
Worst_MRO_Connection_Percent_of_Links_in_Use is greater than 99 
and 
 the value of the attribute Worst_MRO_Connection_Number_of_AIDs is
greater than 0
then
 CICSplex_Sympathy_Sickness is true.
CICSplex_MROPctLink_Warning
Warning threshold exceeded for MRO connection percent.

If the link usage regularly reaches 100% and there are one or more tasks waiting, the configuration for that connection can need to be altered, with an increase in the number of links defined. Effectively, there is an MRO bottleneck caused by a lack of paths available for work to be scheduled cross-system.

Formula

If 
 the value of the attribute Worst_MRO_Connection_
Percent_of_Links_in_Use is greater than 80 
and 
 the value of the attribute
Worst_MRO_Connection_Percent_of_Links_in_Use is less than or equal
to 90
then
 CICSplex_MROPctLink_Warning is true
CICSplex_MROPctLink_Critical
If the link usage is regularly reaches 100% and there are one or more tasks waiting, the configuration for that connection can need to be altered, with an increase in the number of links defined. Effectively, there is an MRO bottleneck caused by a lack of paths available for work to be scheduled cross-system.

Formula

If 
 the value of the attribute
Worst_MRO_Connection_Percent_of_Links_in_Use is greater than 90
then
 CICSplex_MROPctLink_Critical
CICSplex_MROAIDs_Warning
Warning threshold exceeded for MRO AID count.

If the link usage is regularly reaches 100% and there are one or more tasks waiting, the configuration for that connection can need to be altered, with an increase in the number of links defined. Effectively, there is an MRO bottleneck caused by a lack of paths available for work to be scheduled cross-system. Check that the remote system is available and that the connections are in service.

Formula

If 
 the value of the attribute Worst_MRO_Connection_Number_of_AIDs is
greater than 5 
and 
 the value of the attribute Worst_MRO_Connection_Number_of_AIDs is
less than or equal to 10
then
 CICSplex_MROAIDs_Warning is true.
CICSplex_MROAIDs_Critical
Critical threshold exceeded for MRO AID count.

If the link usage is regularly hitting 100% and there are one or more tasks waiting, the configuration for that connection can need to be altered, with an increase in the number of links defined. Effectively, there is an MRO bottleneck caused by a lack of paths available for work to be scheduled cross-system. Check that the remote system is available and that the connections are in service.

Formula

If 
 the value of the attribute Worst_MRO_Connection_Number_of_AIDs is
greater than 10

See also the CICSplex Connection Analysis attribute group.