Can't access to site: Parse error

« MODx Parse Error »
MODx encountered the following error while attempting to parse the requested resource: 
« Execution of a query to the database failed - Table './modx/modx_site_content' is marked as crashed and should be repaired » 
      SQL: SELECT sc.* FROM `modx`.`modx_site_content` sc LEFT JOIN `modx`.`modx_document_groups` dg ON dg.document = sc.id WHERE sc.id = '1' AND (sc.privateweb=0) LIMIT 1; 
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Parser timing 
  MySQL:  0.0440 s (0 Requests) 
  PHP:  0.9440 s   
  Total:  0.9880 s   
Error while inserting event log into database.

« MODx Parse Error »
MODx encountered the following error while attempting to parse the requested resource: 
« Execution of a query to the database failed - Table './modx/modx_manager_log' is marked as crashed and should be repaired » 
      SQL: INSERT INTO `modx`.`modx_manager_log` (timestamp, internalKey, username, action, itemid, itemname, message) VALUES('1212606421', '1', 'asp', '58', '-', 'MODx', 'Logged in') 
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Parser timing 
  MySQL:  0.0017 s (0 Requests) 
  PHP:  1212606421.2369 s   
  Total:  1212606421.2386 s   
Error while inserting event log into database.