1select @@global.aria_pagecache_buffer_size > 0;
2@@global.aria_pagecache_buffer_size > 0
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4select @@session.aria_pagecache_buffer_size;
5ERROR HY000: Variable 'aria_pagecache_buffer_size' is a GLOBAL variable
6show global variables like 'aria_pagecache_buffer_size';
7Variable_name	Value
8aria_pagecache_buffer_size	#
9show session variables like 'aria_pagecache_buffer_size';
10Variable_name	Value
11aria_pagecache_buffer_size	#
12select * from information_schema.global_variables where variable_name='aria_pagecache_buffer_size';
13VARIABLE_NAME	VARIABLE_VALUE
14ARIA_PAGECACHE_BUFFER_SIZE	#
15select * from information_schema.session_variables where variable_name='aria_pagecache_buffer_size';
16VARIABLE_NAME	VARIABLE_VALUE
17ARIA_PAGECACHE_BUFFER_SIZE	#
18set global aria_pagecache_buffer_size=1;
19ERROR HY000: Variable 'aria_pagecache_buffer_size' is a read only variable
20set session aria_pagecache_buffer_size=1;
21ERROR HY000: Variable 'aria_pagecache_buffer_size' is a read only variable
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