{"id":709,"date":"2016-07-13T06:27:12","date_gmt":"2016-07-13T06:27:12","guid":{"rendered":"http:\/\/www.dbafox.com\/?p=709"},"modified":"2016-07-13T06:27:12","modified_gmt":"2016-07-13T06:27:12","slug":"oracle-quick-check-using-scripts","status":"publish","type":"post","link":"https:\/\/dbafox.com\/?p=709","title":{"rendered":"Oracle &#8211; Quick Check using Scripts"},"content":{"rendered":"<p>Not exhaustive<\/p>\n<pre>\r\n\r\nselect * from v$sga_target_advice\r\n\r\nselect * from v$pga_target_advice\r\n\r\nselect * from v$shared_pool_advice\r\n\r\n\r\n-- Dictionary Cache Hit Ratio\r\nSELECT (1 - (Sum(getmisses)\/(Sum(gets) + Sum(getmisses)))) * 100\r\n  FROM   v$rowcache;\r\n\r\n -- -----------------------\r\n  -- Library Cache Hit Ratio\r\n  -- -----------------------\r\n  SELECT (1 -(Sum(reloads)\/(Sum(pins) + Sum(reloads)))) * 100\r\n  FROM   v$librarycache;\r\n\r\n -- -------------------------------\r\n  -- DB Block Buffer Cache Hit Ratio\r\n  -- -------------------------------\r\n  SELECT (1 - (phys.value \/ (db.value + cons.value))) * 100\r\n  FROM   v$sysstat phys,\r\n         v$sysstat db,\r\n         v$sysstat cons\r\n  WHERE  phys.name  = 'physical reads'\r\n  AND    db.name    = 'db block gets'\r\n  AND    cons.name  = 'consistent gets';\r\n\r\n-- ---------------\r\n  -- Latch Hit Ratio\r\n  -- ---------------\r\n  SELECT (1 - (Sum(misses) \/ Sum(gets))) * 100\r\n  FROM   v$latch;\r\n\r\n-- -----------------------\r\n  -- Disk Sort Ratio\r\n  -- -----------------------\r\n  SELECT (disk.value\/mem.value) * 100\r\n  FROM   v$sysstat disk,\r\n         v$sysstat mem\r\n  WHERE  disk.name = 'sorts (disk)'\r\n  AND    mem.name  = 'sorts (memory)';\r\n\r\n-- Locks\r\nSELECT a.serial# as serial,a.sid,a.username,b.type,b.ctime,lmode,a.osuser,c.sql_text\r\nFROM v$session a,v$lock b, v$sqlarea c   WHERE b.type in ('TM','TX','UL') and   a.sid=b.sid and \r\n lmode > 0 and  ((a.PREV_HASH_VALUE = c.hash_value and  a.prev_sql_addr = c.address and  a.sql_hash_value = 0) or  \r\n(c.hash_value=a.sql_hash_value and c.address = a.sql_address))\r\n\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Not exhaustive select * from v$sga_target_advice select * from v$pga_target_advice select * from v$shared_pool_advice &#8212; Dictionary Cache Hit Ratio SELECT (1 &#8211; (Sum(getmisses)\/(Sum(gets) + Sum(getmisses)))) * 100 FROM v$rowcache; &#8212; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211; &#8212; Library Cache Hit Ratio &#8212; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211; SELECT (1 -(Sum(reloads)\/(Sum(pins) + Sum(reloads)))) * 100 FROM v$librarycache; &#8212; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;- &#8212; DB Block Buffer Cache Hit&hellip;&nbsp;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[28],"tags":[],"class_list":["post-709","post","type-post","status-publish","format-standard","hentry","category-oracle-technical"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Oracle - Quick Check using Scripts - dbafox<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbafox.com\/?p=709\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle - Quick Check using Scripts - dbafox\" \/>\n<meta property=\"og:description\" content=\"Not exhaustive select * from v$sga_target_advice select * from v$pga_target_advice select * from v$shared_pool_advice -- Dictionary Cache Hit Ratio SELECT (1 - (Sum(getmisses)\/(Sum(gets) + Sum(getmisses)))) * 100 FROM v$rowcache; 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