Foglight for SQL Server (Cartridge) 7.3.0


Display Name	Description
Database ID	The database ID where the missing index is located.
Database Name	The database name.
Schema Name	The schema name of the missing index.
Object ID	The object ID where the missing index is located.
Object Name	The object name the resource is part of.
Object Type	Type of object.
Is Ms Shipped	Object is created by an internal SQL Server component.
Create Date Utc	Date the object was created.
Modify Date Utc	Date the object was last modified by using an ALTER statement. If the object is a table or a view, modify_date also changes when a clustered index on the table or view is created or altered.
Index Group Handle	Identifies a missing index group.
Index Handle	Identifies a missing index that belongs to the group specified by index_group_handle.
Group Handle	Identifies a group of missing indexes. This identifier is unique across the server. The other columns provide information about all queries for which the index in the group is considered missing. An index group contains only one index.
Unique Compiles	Number of compilations and recompilations that would benefit from this missing index group. Compilations and recompilations of many different queries can contribute to this column value.
User Seeks	Number of seeks caused by user queries that the recommended index in the group could have been used for.
User Scans	Number of scans caused by user queries that the recommended index in the group could have been used for.
Last User Seek Utc	Date and time of last seek caused by user queries that the recommended index in the group could have been used for.
Last User Scan Utc	Date and time of last scan caused by user queries that the recommended index in the group could have been used for.
Average Total User Cost	Average cost of the user queries that could be reduced by the index in the group.
Average User Impact	Average percentage benefit that user queries could experience if this missing index group was implemented. The value means that the query cost would on average drop by this percentage if this missing index group was implemented.
System Seeks	Number of seeks caused by system queries, such as auto stats queries, that the recommended index in the group could have been used for.
System Scans	Number of scans caused by system queries that the recommended index in the group could have been used for.
Last System Seek Utc	Date and time of last system seek caused by system queries that the recommended index in the group could have been used for.
Last System Scan Utc	Date and time of last system scan caused by system queries that the recommended index in the group could have been used for.
Average Total System Cost	Average cost of the system queries that could be reduced by the index in the group.
Average System Impact	Average percentage benefit that system queries could experience if this missing index group was implemented. The value means that the query cost would on average drop by this percentage if this missing index group was implemented.
Equality Columns	Comma-separated list of columns that contribute to equality predicates of the form: table.column =constant_value
Inequality Columns	Comma-separated list of columns that contribute to inequality predicates, for example, predicates of the form: table.column > constant_value Any comparison operator other than "=" expresses inequality.
Included Columns	Comma-separated list of columns needed as covering columns for the query. For more information about covering or included columns, see Create Indexes with Included Columns. For memory-optimized indexes (both hash and memory-optimized nonclustered), ignore included_columns. All columns of the table are included in every memory-optimized index.

Plan Cache Distribution

Details the plan cache distribution, grouped by plan types and their use of related statistics.

Type

System.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	20
Online	60
Offline	300

Collection Metrics


Display Name	Description
Plan Cache Name	The types of objects that can appear in the Procedure Cache include: Trigger Plans: Query plans generated by creating a trigger. Replication Procedure Plans: Query plans of a replication system stored procedure. Procedure Plans: Query plans generated by creating a stored procedure. Prepared SQL Plans: Query plans corresponding to statements prepared via sp_prepare, sp_cursorprepare, or via auto-parameterized or user-parameterized queries. Misc. Normalized Trees: Normalized trees for views, rules, computed columns, and check constraints. Execution Contexts: Data structures that hold the data (such as parameter values) that is specific to the execution of user queries. Cursors: Extensions to result sets that provide the mechanism for working with individual rows, or a small block of rows, in a table. Ad Hoc SQL Plans: Query plans produced for an ad hoc query. Types of objects that can appear in the Procedure Cache for a SQL Server 2005 connection include: Bound Trees: Normalized trees for views, rules, computed columns, and check constraints. Extended Stored procedures: Catalog information for extended store procedures. Object plans: Query plans generated by creating a stored procedure, function, or trigger. SQL Plans: Query plans corresponding to statements prepared via sp_prepare, sp_cursorprepare, or via auto-parameterized or user-parameterized queries. Temporary Tables & Table Variables: Cache information related to temporary tables and table variables.
Cache Size	The amount of memory allocated to the procedure cache over time and breaks it down by object type.
Cache Hit Rate	The amount of memory allocated to the procedure cache over time and breaks it down by object type.
Cache Reads	Cache lookups.
Cache Hit Rate Percent	The percentage of compilations that are being saved by objects already in the procedure cache. The hit rate for this cache will vary widely depending on how your applications are written.
Object Count	The number of objects of each type that are currently in the procedure cache.
Use Count	The rate at which each type of procedure cache objects are being executed (used).

Plan Cache List

Purpose

This collection provides a summary of SQL Server batches and compilations.

Type

System.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	60

The amount of space in the procedure cache (in megabytes) that is allocated to this object.

Cache Object Type

The type of object in the cache.

This metric can have one of the following values:

•

Compiled Plan

•

Executable Plan

•

Parse Tree

•

Extended Stored Procedure

Database

The database where the object resides.

From Cache

Percent of memory consumed by the cache object as part of the whole plan cache memory.

Object

The object name.

Object Type

An object can have one of the following types:

•

•

•

•

•

•

•

•

•

•

•

The number of other cache objects that reference this cache object.

SQL Text

The name of the procedure, or the first 128 bytes of the batch submitted.

SQL Text Size

Object size in bytes.

Use Count

The number of times this cache object has been used since inception.

Used Date Format

The date format used by the connection that created the cache object.

Used Language

The language of the connection that created the cache object.

Replication Agents

Purpose

This collection provides detailed data regarding all replication agents of the selected distributing SQL Server instance (Distributor).

Type

SQL Server.

Collection Sampling Intervals


Frequency Mode	Collection Interval (In Seconds)
Real-time	60
Online	300
Offline	300

Collection Metrics


Display Name	Description
Agent Name	The name of the replication agent.
Average commands	Average number of commands per transaction delivered in the session.
Delivery Latency	Latency, in milliseconds, between the transaction entering the distribution database and being applied to the Subscriber.
Delivery Rate	Average number of commands delivered per second.
Duration	The elapsed time of the agent's last session.
Publication DB Name	The name of the publication database, whose data is replicated using the selected agent.
Publication Name	The name of the publication replicated using the selected agent.
Publishing Server	The name of the SQL Server instance that hosts the publication database, whose data is replicated using the selected agent.
Start Time	The time when the selected session started.
Status	The selected agent’s current status; for example, Started, Completed, Running, Idle, Retrying, and Error.
Subscribing Server	The name of the SQL Server instance that hosts the Subscription database to which data is replicated using the selected agent.
Subscription DB	The name of the Subscription database to which data is replicated using the selected agent.
Subscription Type	Type of subscription; for example, Push, Pull, and Anonymous.
Type	The type of the selected agent; for example, Distribution, Log Reader, Snapshot, Merge, Miscellaneous.

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