Magento admin panel template hints

1st Time

INSERT INTO core_config_data (scope, scope_id, path, value)
VALUES ('default', 0, 'dev/debug/template_hints', 1),
('default', 0, 'dev/debug/template_hints_blocks', 1);


Deactivate
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UPDATE core_config_data set value = 0 where scope = 'default' and scope_id = 0 and path ='dev/debug/template_hints';


2nd Time
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UPDATE core_config_data set value = 1 where scope = 'default' and scope_id = 0 and path ='dev/debug/template_hints';