When does SQL Server warn about an Excessive Memory Grant?
What are the conditions that produce an "Excessive Grant" execution plan warning?
The query memory grant detected "ExcessiveGrant", which may impact the reliability. Grant size: Initial 5128 KB, Final 5128 KB, Used 16 KB.
SSMS
Plan Explorer
Showplan xml
<Warnings>
<MemoryGrantWarning GrantWarningKind="Excessive Grant"
RequestedMemory="5128" GrantedMemory="5128" MaxUsedMemory="16" />
</Warnings>
sql-server execution-plan warning memory-grant
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Paul White♦Paul White
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What are the conditions that produce an "Excessive Grant" execution plan warning?
The query memory grant detected "ExcessiveGrant", which may impact the reliability. Grant size: Initial 5128 KB, Final 5128 KB, Used 16 KB.
SSMS
Plan Explorer
Showplan xml
<Warnings>
<MemoryGrantWarning GrantWarningKind="Excessive Grant"
RequestedMemory="5128" GrantedMemory="5128" MaxUsedMemory="16" />
</Warnings>
sql-server execution-plan warning memory-grant
asked yesterday
Paul White♦Paul White
50.2k14267431
add a comment |
What are the conditions that produce an "Excessive Grant" execution plan warning?
The query memory grant detected "ExcessiveGrant", which may impact the reliability. Grant size: Initial 5128 KB, Final 5128 KB, Used 16 KB.
SSMS
Plan Explorer
Showplan xml
<Warnings>
<MemoryGrantWarning GrantWarningKind="Excessive Grant"
RequestedMemory="5128" GrantedMemory="5128" MaxUsedMemory="16" />
</Warnings>
sql-server execution-plan warning memory-grant
asked yesterday
Paul White♦Paul White
50.2k14267431
What are the conditions that produce an "Excessive Grant" execution plan warning?
The query memory grant detected "ExcessiveGrant", which may impact the reliability. Grant size: Initial 5128 KB, Final 5128 KB, Used 16 KB.
SSMS
Plan Explorer
Showplan xml
<Warnings>
<MemoryGrantWarning GrantWarningKind="Excessive Grant"
RequestedMemory="5128" GrantedMemory="5128" MaxUsedMemory="16" />
</Warnings>
sql-server execution-plan warning memory-grant
sql-server execution-plan warning memory-grant
asked yesterday
Paul White♦Paul White
50.2k14267431
asked yesterday
Paul White♦Paul White
50.2k14267431
asked yesterday
Paul White♦Paul White
50.2k14267431
asked yesterday
Paul White♦Paul White
50.2k14267431
asked yesterday
Paul White♦Paul White
50.2k14267431
50.2k14267431
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1 Answer
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To produce this warning:
- The maximum used memory must be less than 5% of the granted memory
- The granted memory must be more than 5MB (5120 KB, 640 x 8KB pages)*
Server version requirements:
- SQL Server 2014 SP2 (12.0.5000) or later
- SQL Server 2016 SP1 (13.0.4001) or later
- SQL Server 2017 RTM (14.0.1000) or later
* Early versions did not include the second condition.
answered yesterday
Paul White♦Paul White
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
To produce this warning:
- The maximum used memory must be less than 5% of the granted memory
- The granted memory must be more than 5MB (5120 KB, 640 x 8KB pages)*
Server version requirements:
- SQL Server 2014 SP2 (12.0.5000) or later
- SQL Server 2016 SP1 (13.0.4001) or later
- SQL Server 2017 RTM (14.0.1000) or later
* Early versions did not include the second condition.
answered yesterday
Paul White♦Paul White
50.2k14267431
add a comment |
To produce this warning:
- The maximum used memory must be less than 5% of the granted memory
- The granted memory must be more than 5MB (5120 KB, 640 x 8KB pages)*
Server version requirements:
- SQL Server 2014 SP2 (12.0.5000) or later
- SQL Server 2016 SP1 (13.0.4001) or later
- SQL Server 2017 RTM (14.0.1000) or later
* Early versions did not include the second condition.
answered yesterday
Paul White♦Paul White
50.2k14267431
add a comment |
To produce this warning:
- The maximum used memory must be less than 5% of the granted memory
- The granted memory must be more than 5MB (5120 KB, 640 x 8KB pages)*
Server version requirements:
- SQL Server 2014 SP2 (12.0.5000) or later
- SQL Server 2016 SP1 (13.0.4001) or later
- SQL Server 2017 RTM (14.0.1000) or later
* Early versions did not include the second condition.
answered yesterday
Paul White♦Paul White
50.2k14267431
To produce this warning:
- The maximum used memory must be less than 5% of the granted memory
- The granted memory must be more than 5MB (5120 KB, 640 x 8KB pages)*
Server version requirements:
- SQL Server 2014 SP2 (12.0.5000) or later
- SQL Server 2016 SP1 (13.0.4001) or later
- SQL Server 2017 RTM (14.0.1000) or later
* Early versions did not include the second condition.
answered yesterday
Paul White♦Paul White
50.2k14267431
answered yesterday
Paul White♦Paul White
50.2k14267431
answered yesterday
Paul White♦Paul White
50.2k14267431
answered yesterday
Paul White♦Paul White
50.2k14267431
50.2k14267431
add a comment |
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