{"id":494,"date":"2015-05-02T18:12:41","date_gmt":"2015-05-02T10:12:41","guid":{"rendered":"http:\/\/www.royalwzy.com\/?p=494"},"modified":"2015-09-10T21:53:02","modified_gmt":"2015-09-10T13:53:02","slug":"%e7%94%b1%e4%ba%8ebitmap%e9%80%a0%e6%88%90%e7%9a%84insert%e7%9b%b8%e4%ba%92%e9%98%bb%e5%a1%9e","status":"publish","type":"post","link":"http:\/\/www.royalwzy.com\/?p=494","title":{"rendered":"\u7531\u4e8ebitmap\u9020\u6210\u7684insert\u76f8\u4e92\u963b\u585e"},"content":{"rendered":"<p>CREATE TABLE t<br \/>\n(<br \/>\nNAME VARCHAR2(20)<br \/>\n);<\/p>\n<p>CREATE BITMAP INDEX idx_b_name ON t(NAME);<\/p>\n<p>INSERT INTO t VALUES(&#8216;U&#8217;);<br \/>\nINSERT INTO t VALUES(&#8216;C&#8217;);<\/p>\n<p>select sid from v$mystat where rownum&lt;2;\u00a0 &#8211;198<\/p>\n<p>select addr, sid, type, id1,id2, lmode,request,block from v$lock where sid=198 or sid=200;<br \/>\n1\u00a0000007FFBDC55D50\u00a0198\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n2\u00a0000000001E2E9600\u00a0198\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n3\u00a0000007FFB9CE8488\u00a0198\u00a0TX\u00a065561\u00a01133\u00a06\u00a00\u00a00<br \/>\n&#8211;\u8fd9\u4e2a\u65f6\u5019\u767b\u5f55\u7b2c\u4e8c\u4e2asession<br \/>\nselect sid from v$mystat where rownum&lt;2;<br \/>\n200<\/p>\n<p>INSERT INTO t VALUES(&#8216;U&#8217;);<br \/>\nselect addr, sid, type, id1,id2, lmode,request,block from v$lock where sid=198 or sid=200;<\/p>\n<p>1\u00a0000007FFBDC55D50\u00a0198\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n2\u00a0000007FFBDC56588\u00a0200\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n3\u00a00000000026980C10\u00a0198\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n4\u00a0000007FFB9CE8488\u00a0198\u00a0TX\u00a0196617\u00a01336\u00a06\u00a00\u00a00<\/p>\n<p>\u8fd9\u4e2a\u65f6\u5019\u5728SESSION2\u4e2d<br \/>\nINSERT INTO t VALUES(&#8216;E&#8217;);<\/p>\n<p>select addr, sid, type, id1,id2, lmode,request,block from v$lock where sid=198 or sid=200;<\/p>\n<p>1\u00a0000007FFBDC55D50\u00a0198\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n2\u00a0000007FFBDC56588\u00a0200\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n3\u00a0000000002697E370\u00a0200\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n4\u00a0000000002697E370\u00a0198\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n5\u00a0000007FFB9CC9678\u00a0200\u00a0TX\u00a065568\u00a01131\u00a06\u00a00\u00a00<br \/>\n6\u00a0000007FFB9CE8488\u00a0198\u00a0TX\u00a0196617\u00a01336\u00a06\u00a00\u00a00<br \/>\nSEssion\u4e0d\u963b\u585e<\/p>\n<p>\u8fd9\u4e2a\u65f6\u5019\u7ee7\u7eed\u5728session2 \u505a\u63d2\u5165<\/p>\n<p>INSERT INTO t VALUES(&#8216;U&#8217;);<br \/>\n1\u00a0000007FFBDC55D50\u00a0198\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n2\u00a0000007FFBDC56588\u00a0200\u00a0AE\u00a0100\u00a00\u00a04\u00a00\u00a00<br \/>\n3\u00a0000007FFBDC56658\u00a0200\u00a0TX\u00a0196617\u00a01336\u00a00\u00a04\u00a00<br \/>\n4\u00a00000000026980C10\u00a0200\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n5\u00a00000000026980C10\u00a0198\u00a0TM\u00a077149\u00a00\u00a03\u00a00\u00a00<br \/>\n6\u00a0000007FFB9CC9678\u00a0200\u00a0TX\u00a065568\u00a01131\u00a06\u00a00\u00a00<br \/>\n7\u00a0000007FFB9CE8488\u00a0198\u00a0TX\u00a0196617\u00a01336\u00a06\u00a00\u00a01<\/p>\n<p>\u8fd9\u4e2a\u65f6\u5019Insert\u53d1\u751f\u4e86\u963b\u585e session2\u5728\u7b49seesion1\u91ca\u653e\u8d44\u6e90<\/p>\n<p>\u5728\u8fd9\u4e2a\u65f6\u5019\u53d1\u751f\u4e00\u4e2ainsert \u963b\u788d\u4e86 INSERT \u7684\u64cd\u4f5c\u00a0 \u9020\u6210\u5b83\u7684\u539f\u56e0\u5c31\u662f BITMAP<br \/>\nSELECT OBJECT_ID FROM User_Objects WHERE object_name=&#8217;IDX_B_NAME&#8217; ;\u00a0\u00a0 &#8211;77150<\/p>\n<p>alter session set events &#8216;immediate trace name treedump level INDEX_OBJECT_ID&#8217;;<\/p>\n<p>alter session set events &#8216;immediate trace name treedump level 52563&#8217;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CREATE TABLE t ( NAME VARCHAR2(20) ); CREATE BITMAP IND [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[34,8],"class_list":["post-494","post","type-post","status-publish","format-standard","hentry","category-oracle","tag-oracle","tag-performance"],"_links":{"self":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=494"}],"version-history":[{"count":1,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/494\/revisions"}],"predecessor-version":[{"id":1003,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/494\/revisions\/1003"}],"wp:attachment":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=494"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}