This attribute group monitors the Information Store activities on the Exchange Server.
Note: This attribute group is available in Exchange Server 2013, or later. This attribute group is a multi-instance attribute group.
Active MailboxesThe number of mailboxes that are currently active. The value format is a 4-byte integer.
AddressInfo Cache Lookups/SecThe number of times the AddressInfo cache is currently accessed per second. The value format is a 4-byte integer.
AddressInfo Cache Misses/SecThe number of cache access attempts per second when the required data was not found in the AddressInfo cache. The value format is a 4-byte integer.
Async Notification Calls in RPC PoolsThe number of asynchronous notification calls that are currently waiting to be processed in all the RPC context handle pools. The value format is a 4-byte integer.
DatabaseInfo Cache Lookups/SecThe number of times the DatabaseInfocache is currently accessed per second. The value format is a 4-byte integer.
DatabaseInfo Cache Misses/SecThe number of cache access attempts per second when the required data was not found in the DatabaseInfo cache. The value format is a 4-byte integer.
DistributionListMembership Cache Lookups/SecThe number of times the DistributionListMembership cache is currently accessed per second. The value format is a 4-byte integer.
DistributionListMembership Cache Misses/SecThe number of cache access attempts per second when the required data was not found in the DistributionListMembership cache. The value format is a 4-byte integer.
Folders Created/SecThe number of folders that are currently created per second in the Information Store.
The value format is a 4-byte integer.
Folders Deleted/SecThe number of folders that are currently deleted per second in the Information Store. The value format is a 4-byte integer.
Folders Opened/SecThe number of folders that are currently opened per second in the Information Store. The value format is a 4-byte integer.
LogicalIndex Cache Hits/SecThe number of cache access attempts per second when the required data was found in the LogicalIndex cache. The value format is a 4-byte integer.
Logical IndexCache Lookups/SecThe number of times the LogicalIndex cache is currently accessed per second. The value format is a 4-byte integer.
LogicalIndex Cache Misses/SecThe number of cache access attempts per second when the required data was not found in the LogicalIndex cache. The value format is a 4-byte integer.
MailboxInfo Cache Hits/SecThe number of cache access attempts per second when the required data was found in the MailboxInfo cache. The value format is a 4-byte integer.
MailboxInfo Cache Lookups/SecThe number of times the MailboxInfo cache is currently accessed per second. The value format is a 4-byte integer.
MailboxInfoCache Misses/SecThe number of cache access attempts per second when the required data was not found in the MailboxInfo cache. The value format is a 4-byte integer.
Mailbox Database NameThe name of the mailbox database. The value format is an alphanumeric string with a maximum of 600 characters.
Mailbox Database Percent GrowthThe percentage of Information Store growth since the last query was processed. The value format is a 4-byte integer.
Mailbox Database Percent Space UsedThe percentage of Information Store space that is currently used by the mailbox database. The value format is a 4-byte integer.
Mailbox Database SizeThe current size (in MB) of the mailbox databases in the Information Store. The value format is a 4-byte integer.
Mailbox Database StateThe state of the mailbox store, such as mounted or dismounted. The following table provides the enumeration values of the attribute:
External value Internal value
Mounted 0
Dismounted 1
N/A 2
Mailbox Database Distinguished NameThe distinguished name of the mailbox database. The value format is an alphanumeric string with a maximum of 2000 characters.
Mailbox Level Maintenance ItemsThe number of mailbox maintenance items. The value format is a 4-byte integer.
Mailbox Level Maintenances/SecThe number of maintenance tasks that are currently completed per second for the mailbox. The value format is a 4-byte integer.
MAPI Messages Created/SecThe number of MAPI messages that are currently created per second in the database. The value format is a 4-byte integer.
MAPI Messages Modified/SecThe number of MAPI messages that are currently modified per second in the database. The value format is a 4-byte integer.
MAPI Messages Opened/SecThe number of MAPI messages that are currently opened per second in the database. The value format is a 4-byte integer.
Messages Created/SecThe number of messages that are currently created per second in the top-level folders of the Information Store. The value format is a 4-byte integer.
Messages Deleted/SecThe number of messages that are currently deleted per second in the top-level folders of the Information Store. The value format is a 4-byte integer.
Messages Delivered/SecThe number of messages that are currently delivered per second to the database.
The value format is a 4-byte integer.
Messages Opened/SecThe number of messages that are currently opened per second in the top-level folders of the Information Store. The value format is a 4-byte integer.
Messages Submitted/SecThe number of messages that are currently submitted per second from the database. The value format is a 4-byte integer.
Messages Updated/SecThe number of messages that are currently updated per second in the top-level folders of the Information Store. The value format is a 4-byte integer.
Number of Active RPC Context Handle PoolsThe number of RPC context handle pools that are currently active. The value format is a 4-byte integer.
OrganizationContainer Cache Hits/SecThe number of cache access attempts per second when the required data was found in the OrganizationContainer cache. The value format is a 4-byte integer.
OrganizationContainer Cache Lookups/SecThe number of times the OrganizationContainer cache is currently accessed per second. The value format is a 4-byte integer.
OrganizationContainer Cache Misses/SecThe number of cache access attempts per second when the required data was not found in the OrganizationContainer cache. The value format is a 4-byte integer.
Percent RPC RequestsThe percentage of MAPI RPC requests that are currently being processed. The value format is a 4-byte integer.
Quarantined Mailbox CountThe number of mailboxes that are currently quarantined per database. The value format is a 4-byte integer.
RPC Average LatencyThe average time (in milliseconds) of the MAPI RPC latency. The value format is a 4-byte integer.
RPC Operations/SecThe number of RPC operations that are currently processed per second. The value format is a 4-byte integer.
RPC Packets/SecThe number of RPC packets that are currently processed per second. The value format is a 4-byte integer.
RPC Pool Context HandlesThe number of RPC context handles that are currently available in all the RPC context handle pools. The value format is a 4-byte integer.
RPC RequestsThe number of MAPI RPC requests that are currently running. The value format is a 4-byte integer.
Search Queries/SecThe number of search queries that are currently processed per second on the database. The value format is a 4-byte integer.
Search Results/SecThe number of search results that are currently generated per second during the database search operations. The value format is a 4-byte integer.
Subobjects Cleaned/SecThe number of message attachments or embedded messages that are currently cleaned per second. The value format is a 4-byte integer.
Subobjects Created/SecThe number of message attachments or embedded messages that are currently created per second. The value format is a 4-byte integer.
Subobjects Deleted/SecThe number of message attachments or embedded messages that are currently deleted per second. The value format is a 4-byte integer.
Subobjects Opened/SecThe number of message attachments or embedded messages that are currently opened per second. The value format is a 4-byte integer.
Subobjects Searches/SecThe number of search operations that are currently completed per second on the database. The value format is a 4-byte integer.
System NameThe key for the table view in the format hostname: EX. This character string provides a unique identifier for each server across an enterprise. The value format is an alphanumeric string with a maximum of 64 characters.
TimestampThe time when data was collected. The format is MM/DD/YY HH:mm:SS, where the following measures apply:
MM Month
DD Day
YY Year
HH Hour
mm Minute
SS Second
Total Search Queries Completed in More Than 60 SecondsThe number of search queries that are currently processed per database, and for which the processing time was greater than 60 seconds. The value format is a 4-byte integer.
Total Search Queries Completed in Less Than 1 SecondThe number of search queries that are currently processed per database, and for which the processing time was less than 1 second. The value format is a 4-byte integer.
Total Search Queries Completed in Less Than 2 SecondsThe number of search queries that are currently processed per database, and for which the processing time was less than 2 seconds. The value format is a 4-byte integer.
Total Search Queries Completed in 10 to 60 SecondsThe number of search queries that are currently processed per database, and for which the processing time was in the range 10 - 60 seconds. The value format is a 4-byte integer.
Total Search Queries Completed in 2 to 10 SecondsThe number of search queries that are currently processed per database, and for which the processing time was in the range 2 - 10 seconds. The value format is a 4-byte integer.
Total SearchesThe total number of search operations per database. The value format is a 4-byte integer.
Total Searches in ProgressThe number of search operations that are currently being processed per database. The value format is a 4-byte integer.
Total Successful Search QueriesThe number of search queries that are currently completed per database.
The value format is a 4-byte integer.