eG Monitoring
 

Measures reported by CtxCheckLHCTest

Each XenApp server stores a subset of the data store in the Local Host Cache (LHC). The LHC performs two primary functions:

  • Permits a server to function in the absence of a connection to the data store.
  • Improves performance by caching information used by ICA Clients for enumeration and application resolution.

The following information is contained in the local host cache:

  • All servers in the farm, and their basic information.
  • All applications published within the farm and their properties.
  • All Windows network domain trust relationships within the farm.
  • All information specific to itself. (product code, SNMP settings, licensing information)

This test checks for data consistency (duplicate values) and integrity (corrupt entries) of the XenApp servers local host cache.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Lhc_init_status Indicates whether the local host cache is initialized or not.   This measure reports a value Success if the local host cache is initialized successfully and reports a value Failure if the local host cache initialization is not successful. The numeric values that correspond to the above-mentioned states are as follows:

State Numeric Value
Success 0
Failure 1

Note:

By default, this measure reports the above-mentioned states while indicating whether the local host cache initialization is successful or not. However, the graph of this measure will be represented using the numeric equivalents i.e., 0 and 1 only.
Lhc_integrity_status Indicates whether the LHC entry is integrated successfully or not.   This measure reports a value Success if the LHC entry is integrated successfully and reports a value Failure if the LHC entry integration is not successful. Typically, this measure will report the value Failure, if one or more corrupt entries are found in the local host cache. The only way you can fix a corruption in the local host cache is by deleting and recreating the local host cache file (which is an MS Access file). The numeric values that correspond to the above-mentioned states are as follows:

State Numeric Value
Success 0
Failure 1

Note:

By default, this measure reports the above-mentioned states while indicating whether LHC entry is integrated successfully or not. However, the graph of this measure will be represented using the numeric equivalents i.e., 0 and 1 only.
Lhc_ctrl_nodes_status Indicates the health of the context nodes.   This measure reports a value Success if the health of the context nodes is monitored successfully and reports a value Failure if the health monitoring is not successful. The numeric values that correspond to the above-mentioned states are as follows:

State Numeric Value
Success 0
Failure 1

Note:

By default, this measure reports the above-mentioned states while indicating if the health of the context nodes is monitored successfully or not. However, the graph of this measure will be represented using the numeric equivalents i.e., 0 and 1 only.