Problem: Single Database Server Performs Low Performance

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Pragya Keshap answered on February 3, 2023 Popularity 1/10 Helpfulness 1/10

answer Problem: Single Database Server Performs Low Performance

Problem: Single Database Server Performs Low Performance

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Problems

● Databases become very slow by time with app grows

● Single database goes un-manageble situation

● Database operations are become slower

● Very low performance due to slowness of single

database

● Running out of disk space

Solutions

● Data Partitioning

● Horizontal, Vertical, and Functional Data Partitioning

● Improve availability

● Increase scalability

● Increase performance

● Improve security

● Improve data management, Operation

SELECT
	migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) AS improvement_measure,
	'CREATE INDEX [missing_index_' + CONVERT (varchar, mig.index_group_handle) + '_' + CONVERT (varchar, mid.index_handle)
	+ '_' + LEFT (PARSENAME(mid.statement, 1), 32) + ']'
	+ ' ON ' + mid.statement
	+ ' (' + ISNULL (mid.equality_columns,'')
    + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN ',' ELSE '' END
    + ISNULL (mid.inequality_columns, '')
	+ ')'
	+ ISNULL (' INCLUDE (' + mid.included_columns + ')', '') AS create_index_statement,
	migs.*, mid.database_id, mid.[object_id]
FROM
	sys.dm_db_missing_index_groups mig
	INNER JOIN sys.dm_db_missing_index_group_stats migs ON migs.group_handle = mig.index_group_handle
	INNER JOIN sys.dm_db_missing_index_details mid ON mig.index_handle = mid.index_handle
WHERE
	migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) > 10
ORDER BY
	migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC

https://www.wardyit.com/blog/5-common-causes-sql-server-performance-problems/

Popularity 1/10 Helpfulness 1/10 Language sql

Source: Grepper

Tags: database-server performance sql

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Contributed on Feb 03 2023

Pragya Keshap

0 Answers Avg Quality 2/10

Problem: Single Database Server Performs Low Performance

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