{"id":28,"date":"2011-08-22T23:45:14","date_gmt":"2011-08-22T15:45:14","guid":{"rendered":"https:\/\/yangtingkun.net\/?p=28"},"modified":"2011-09-22T18:49:54","modified_gmt":"2011-09-22T10:49:54","slug":"truncate%e6%a8%a1%e5%bc%8fsqlldr%e5%af%bc%e8%87%b4securefile%e7%9a%84lob%e7%a9%ba%e9%97%b4%e4%b8%8d%e6%96%ad%e5%a2%9e%e9%95%bf","status":"publish","type":"post","link":"https:\/\/yangtingkun.net\/?p=28","title":{"rendered":"TRUNCATE\u6a21\u5f0fSQLLDR\u5bfc\u81f4SECUREFILE\u7684LOB\u7a7a\u95f4\u4e0d\u65ad\u589e\u957f"},"content":{"rendered":"<p>\u6d4b\u8bd5LOB\u7684SECUREFILE\u5b58\u50a8\u65b9\u5f0f\u65f6\u53d1\u73b0\uff0c\u5982\u679c\u5229\u7528SQLLDR\u7684TRUNCATE\u65b9\u5f0f\u5bfc\u5165\u6570\u636e\uff0c\u968f\u7740\u6d4b\u8bd5\u6b21\u6570\u7684\u589e\u52a0\uff0cLOB\u5bf9\u8c61\u5360\u7528\u7684\u7a7a\u95f4\u4e5f\u4f1a\u9010\u6b65\u589e\u52a0\u3002<br \/>\n\u521b\u5efa\u8868\u7684\u811a\u672c\u5f88\u7b80\u5355\uff1a<\/p>\n<pre lang='SQL'>create table t_load_4m_sf (id number, full_name varchar2(100), \r\ncreate_date date, contents blob, constraint pk_t_load_4m_sf primary key(id))\r\nlob (contents) store as securefile;<\/pre>\n<p>\u7528\u4e8e\u52a0\u8f7dLOB\u6570\u636e\u7684\u63a7\u5236\u6587\u4ef6\u5982\u4e0b\uff1a<\/p>\n<pre lang='SQL'>[oracle@dbserver1 sqlldr]$ more sqlldr_4M_sf.ctl\r\nLOAD DATA\r\nINFILE 'filename.dat'\r\nINTO TABLE T_LOAD_4M_SF\r\nTRUNCATE\r\nFIELDS TERMINATED BY ','\r\n(ID CHAR(255),\r\nFULL_NAME CHAR(255),\r\nCREATE_DATE SYSDATE,\r\nCONTENTS LOBFILE(FULL_NAME) TERMINATED BY EOF)<\/pre>\n<p>\u6570\u636e\u6587\u4ef6\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre lang='SQL'>[oracle@dbserver1 sqlldr]$ more filename.dat\r\n1,\/home\/oracle\/2M\/IMG_5015.JPG\r\n2,\/home\/oracle\/2M\/IMG_5016.JPG\r\n3,\/home\/oracle\/2M\/IMG_5017.JPG\r\n4,\/home\/oracle\/2M\/IMG_5018.JPG\r\n5,\/home\/oracle\/2M\/IMG_5022.JPG\r\n6,\/home\/oracle\/2M\/IMG_5023.JPG\r\n7,\/home\/oracle\/2M\/IMG_5025.JPG\r\n.\r\n.\r\n.\r\n663,\/home\/oracle\/2M\/DSC00142.JPG\r\n664,\/home\/oracle\/2M\/DSC00143.JPG<\/pre>\n<p>\u5bfc\u5165\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre lang='SQL'>[oracle@dbserver1 sqlldr]$ sqlldr enmotest\/oracle control=sqlldr_4M_sf.ctl\r\nSQL*Loader: Release 11.2.0.2.0 - Production on Mon Aug 8 17:32:54 2011\r\nCopyright (c) 1982, 2009, Oracle and\/or its affiliates.  All rights reserved.\r\nCommit point reached - logical record count 64\r\nCommit point reached - logical record count 128\r\nCommit point reached - logical record count 192\r\nCommit point reached - logical record count 256\r\nCommit point reached - logical record count 320\r\nCommit point reached - logical record count 384\r\nCommit point reached - logical record count 448\r\nCommit point reached - logical record count 512\r\nCommit point reached - logical record count 576\r\nCommit point reached - logical record count 640\r\nCommit point reached - logical record count 664<\/pre>\n<p>\u7b2c\u4e00\u6b21\u6267\u884c\u5bfc\u5165\uff0c\u68c0\u67e5\u8868\u7684\u7a7a\u95f4\u5360\u7528\uff1a<\/p>\n<pre lang='SQL'>SQL> select table_name, a.segment_name, bytes\/1024\/1024 from user_segments a, user_lobs b where b.segment_name = a.segment_name  order by 1;\r\nTABLE_NAME                     SEGMENT_NAME                   BYTES\/1024\/1024\r\n------------------------------ ------------------------------ ---------------\r\nT_LOAD_4M                      SYS_LOB0000062585C00004$$                 1088\r\nT_LOAD_4M_SF                   SYS_LOB0000062641C00004$$            1220.1875<\/pre>\n<p>\u5176\u4e2dT_LOAD_4M\u662fLOB\u6ca1\u6709\u91c7\u7528SECUREFILE\u65b9\u5f0f\u4fdd\u5b58\u7684\u666e\u901a\u8868\u3002\u8fd9\u4e2a\u8868\u6bcf\u6b21\u6267\u884cTRUNCATE\u65b9\u5f0f\u7684SQLLDR\u52a0\u8f7d\u540e\uff0c\u7a7a\u95f4\u5e76\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u4f46\u662fT_LOAD_4M_SF\u968f\u7740\u6267\u884cSQLLDR\u6b21\u6570\u7684\u589e\u52a0\uff0c\u7a7a\u95f4\u5360\u7528\u7684\u60c5\u51b5\u5206\u522b\u53d8\u4e3a\uff1a<\/p>\n<pre lang='SQL'>SQL> select table_name, a.segment_name, bytes\/1024\/1024 from user_segments a, user_lobs b where b.segment_name = a.segment_name  order by 1;\r\nTABLE_NAME                     SEGMENT_NAME                   BYTES\/1024\/1024\r\n------------------------------ ------------------------------ ---------------\r\nT_LOAD_4M                      SYS_LOB0000062585C00004$$                 1088\r\nT_LOAD_4M_SF                   SYS_LOB0000062641C00004$$            1348.1875\r\nSQL> select table_name, a.segment_name, bytes\/1024\/1024 from user_segments a, user_lobs b where b.segment_name = a.segment_name  order by 1;\r\nTABLE_NAME                     SEGMENT_NAME                   BYTES\/1024\/1024\r\n------------------------------ ------------------------------ ---------------\r\nT_LOAD_4M                      SYS_LOB0000062585C00004$$                 1088\r\nT_LOAD_4M_SF                   SYS_LOB0000062641C00004$$            1540.1875\r\nSQL> select table_name, a.segment_name, bytes\/1024\/1024 from user_segments a, user_lobs b where b.segment_name = a.segment_name  order by 1;\r\nTABLE_NAME                     SEGMENT_NAME                   BYTES\/1024\/1024\r\n------------------------------ ------------------------------ ---------------\r\nT_LOAD_4M                      SYS_LOB0000062585C00004$$                 1088\r\nT_LOAD_4M_SF                   SYS_LOB0000062641C00004$$             1732.125<\/pre>\n<p>\u9664\u4e86\u7b2c\u4e00\u6b21\u52a0\u8f7d\u7a7a\u95f4\u589e\u957f\u4e86128M\u5916\uff0c\u4ee5\u540e\u6bcf\u6b21\u52a0\u8f7d\u90fd\u4f1a\u5bfc\u81f4\u8868\u7a7a\u95f4\u589e\u957f192M\u3002\u800c\u540c\u6837\u7684\u64cd\u4f5c\u5e76\u4e0d\u4f1a\u5bfc\u81f4BASICFILE\u65b9\u5f0f\u7684LOB\u8868\u3002<br \/>\n\u5bfc\u81f4\u8fd9\u4e2a\u73b0\u8c61\u7684\u539f\u56e0\u9664\u4e86SECUREFILE\u5b58\u50a8\u65b9\u5f0f\u5916\uff0c\u4e5f\u4e0eSQLLDR\u7684TRUNCATE\u5bfc\u5165\u65b9\u5f0f\u6709\u5173\uff0cSQLLDR\u7684TRUNCATE\u53ea\u662f\u4e3a\u4e86\u6e05\u7a7a\u6570\u636e\uff0c\u7531\u4e8e\u968f\u540e\u8fd8\u8981\u6267\u884c\u5bfc\u5165\uff0c\u56e0\u6b64\u6ca1\u6709\u5fc5\u8981\u56de\u6536\u5206\u914d\u7684\u7a7a\u95f4\uff0c\u56e0\u6b64\u8fd9\u4e2aTRUNCATE\u8bed\u53e5\u4f1a\u4fdd\u7559\u73b0\u6709\u7684\u7a7a\u95f4\uff0c\u5728\u52a0\u4e0aSECUREFILE\u7684\u7279\u6b8a\u6027\uff0c\u5bfc\u81f4\u4e86\u6bcf\u6b21\u52a0\u8f7dLOB\u90fd\u4f7f\u5f97\u8868\u7684\u7a7a\u95f4\u4e0d\u65ad\u7684\u589e\u957f\u3002<br \/>\n\u800c\u5982\u679c\u5c1d\u8bd5\u76f4\u63a5\u6267\u884cTRUNCATE TABLE\u8bed\u53e5\uff0c\u5219\u4f1a\u4f7f\u5f97\u8868\u7684\u9ad8\u6c34\u4f4d\u7ebf\u88ab\u6e05\u7a7a\uff0c\u8868\u7684\u5927\u5c0f\u6062\u590d\u52300\u3002\u867d\u7136\u8fd9\u91cc\u5b58\u5728\u4e00\u5b9a\u7684\u7a7a\u95f4\u6cc4\u6f0f\uff0c\u4f46\u662f\u5bf9\u4e8e\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u8fd9\u79cdTRUNCATE\u7684SQLLDR\u65b9\u5f0f\u5e94\u8be5\u6781\u4e3a\u7f55\u89c1\uff0c\u56e0\u6b64\u5e76\u4e0d\u4f1a\u5bfc\u81f4\u4ec0\u4e48\u5371\u5bb3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6d4b\u8bd5LOB\u7684SECUREFILE\u5b58\u50a8\u65b9\u5f0f\u65f6\u53d1\u73b0\uff0c\u5982\u679c\u5229\u7528SQLLDR\u7684TRUNCATE\u65b9\u5f0f\u5bfc\u5165\u6570\u636e\uff0c\u968f\u7740\u6d4b\u8bd5\u6b21\u6570\u7684\u589e\u52a0\uff0cLOB\u5bf9\u8c61\u5360\u7528\u7684\u7a7a\u95f4\u4e5f\u4f1a\u9010\u6b65\u589e\u52a0\u3002 \u521b\u5efa\u8868\u7684\u811a\u672c\u5f88\u7b80\u5355\uff1a create table t_load_4m_sf (id number, full_name varchar2(100), create_date date, contents blob, constraint pk_t_load_4m_sf primary key(id)) lob (contents) store as securefile; \u7528\u4e8e\u52a0\u8f7dLOB\u6570\u636e\u7684\u63a7\u5236\u6587\u4ef6\u5982\u4e0b\uff1a [oracle@dbserver1 sqlldr]$ more sqlldr_4M_sf.ctl LOAD DATA INFILE &#8216;filename.dat&#8217; INTO TABLE T_LOAD_4M_SF TRUNCATE FIELDS TERMINATED BY &#8216;,&#8217; (ID &hellip; <a href=\"https:\/\/yangtingkun.net\/?p=28\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[91,90,76,89],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2yiY3-s","_links":{"self":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/28"}],"collection":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28"}],"version-history":[{"count":3,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions"}],"predecessor-version":[{"id":143,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions\/143"}],"wp:attachment":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}