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24 lines
838 B
Plaintext
24 lines
838 B
Plaintext
select @@global.performance_schema;
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@@global.performance_schema
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1
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select @@session.performance_schema;
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ERROR HY000: Variable 'performance_schema' is a GLOBAL variable
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show global variables like 'performance_schema';
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Variable_name Value
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performance_schema ON
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show session variables like 'performance_schema';
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Variable_name Value
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performance_schema ON
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select * from information_schema.global_variables
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where variable_name='performance_schema';
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VARIABLE_NAME VARIABLE_VALUE
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PERFORMANCE_SCHEMA ON
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select * from information_schema.session_variables
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where variable_name='performance_schema';
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VARIABLE_NAME VARIABLE_VALUE
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PERFORMANCE_SCHEMA ON
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set global performance_schema=1;
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ERROR HY000: Variable 'performance_schema' is a read only variable
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set session performance_schema=1;
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ERROR HY000: Variable 'performance_schema' is a read only variable
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