{"id":11974,"date":"2022-10-03T17:17:04","date_gmt":"2022-10-03T08:17:04","guid":{"rendered":"https:\/\/prodskill.com\/?p=11974"},"modified":"2022-10-05T00:13:54","modified_gmt":"2022-10-04T15:13:54","slug":"oracle-character-set-migration-10-convert-clob","status":"publish","type":"post","link":"https:\/\/prodskill.com\/es\/oracle-character-set-migration-10-convert-clob\/","title":{"rendered":"Conversi\u00f3n de juego de caracteres de Oracle (10): 6.3. C\u00f3mo convertir el tipo CLOB a coreano"},"content":{"rendered":"<p>Echemos un vistazo al m\u00e9todo de conversi\u00f3n de tipo coreano CLOB. En la base de datos del juego de caracteres US7ASCII, puede comprobar c\u00f3mo convertir el tipo CLOB, incluido Hangul, a AL32UTF8 y el resultado de la conversi\u00f3n.<\/p>\n\n\n\n<p>Esta es una continuaci\u00f3n del art\u00edculo anterior.<\/p>\n\n\n\n<p><a href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-9-dblink-ctas-utl_raw\/\">Conversi\u00f3n de juegos de caracteres de Oracle (9): 6. C\u00f3mo convertir juegos de caracteres implementados por el usuario (2)<\/a><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">&lt;&lt;Tabla de contenidos&gt;&gt;<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Pesta\u00f1a de contenido alternativo\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Palanca<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-10-convert-clob\/#63_CLOB_type_%ED%95%9C%EA%B8%80_%EB%B3%80%ED%99%98_%EB%B0%A9%EB%B2%95\" >6.3. C\u00f3mo convertir el tipo CLOB a coreano<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-10-convert-clob\/#631_CLOB_%EB%8D%B0%EC%9D%B4%ED%84%B0_%ED%99%95%EC%9D%B8\" >6.3.1. Consultar datos CLOB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-10-convert-clob\/#632_CLOB_%EB%8D%B0%EC%9D%B4%ED%84%B0_%EB%B3%80%ED%99%98\" >6.3.2. Conversi\u00f3n de datos CLOB<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\" id=\"6.3._CLOB_\ubcc0\ud658_\ubc29\ubc95\"><span class=\"ez-toc-section\" id=\"63_CLOB_type_%ED%95%9C%EA%B8%80_%EB%B3%80%ED%99%98_%EB%B0%A9%EB%B2%95\"><\/span>6.3. C\u00f3mo convertir el tipo CLOB a coreano<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-8-datapump-export-import\/\">Conversi\u00f3n de conjuntos de caracteres de Oracle(8): 6. C\u00f3mo convertir un conjunto de caracteres implementado por el usuario (1)<\/a><\/p>\n\n\n\n<p>En el art\u00edculo anterior, mencion\u00e9 lo siguiente:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Como referencia, en el caso de la conversi\u00f3n de US7ASCII a AL32UTF8, las columnas de tipo CLOB no se convierten normalmente, por lo que se requiere un procesamiento por separado.<br>Se explicar\u00e1 en el siguiente art\u00edculo.<\/p><\/blockquote>\n\n\n\n<p>En este art\u00edculo, explicaremos c\u00f3mo convertir el tipo CLOB, incluidos los caracteres coreanos, a AL32UTF8 utilizando DB Link de US7ASCII a AL32UTF8. Utilice DBMS_LOB, que es un paquete b\u00e1sico de Oracle.<\/p>\n\n\n\n<p>Primero, verifiquemos los datos CLOB de tres instancias: ORAUS7, ORAMSWIN949 y ORAUTF.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"6.3.1._CLOB_\ub370\uc774\ud130_\ud655\uc778\"><span class=\"ez-toc-section\" id=\"631_CLOB_%EB%8D%B0%EC%9D%B4%ED%84%B0_%ED%99%95%EC%9D%B8\"><\/span>6.3.1. Consultar datos CLOB<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Llene la columna CLOB (REF_DES) con datos ejecutando la declaraci\u00f3n INSERT a continuaci\u00f3n en tres instancias: ORAUS7, ORAMSWIN949 y ORAUTF.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">INSERT INTO SUB_MON_STAT\n(USE_MON, LINE_NUM, SUB_STA_ID, SUB_STA_NM, RIDE_PASGR_NUM,\n ALIGHT_PASGR_NUM, WORK_DT, COMMT,\n REF_DES, REF_IMG)\nVALUES\n('201301', '1\ud638\uc120', '0150', '\uc11c\uc6b8\uc5ed', 2199181,\n 1855268, '20130723', RPAD('\uc11c\uc6b8\uc5ed', 3000, '\uc11c\uc6b8\uc5ed'),\n RPAD('\uc11c\uc6b8\uc5ed', 3000, '\uc11c\uc6b8\uc5ed'), UTL_RAW.CAST_TO_RAW('12345'))\n;<\/pre>\n\n\n\n<p>El tipo de datos de cada columna es el siguiente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84.png\"><img loading=\"lazy\" decoding=\"async\" width=\"894\" height=\"253\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84.png\" alt=\"Oracle Character Set \ubcc0\ud658 \ud14c\uc2a4\ud2b8 \ud14c\uc774\ube14 \uad6c\uc131\" class=\"wp-image-11938\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84.png 894w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-300x85.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-768x217.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-18x5.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-24x7.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-36x10.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-84-48x14.png 48w\" sizes=\"auto, (max-width: 894px) 100vw, 894px\" \/><\/a><figcaption>Configuraci\u00f3n de la tabla de prueba de conversi\u00f3n de juegos de caracteres de Oracle<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Ahora, verifiquemos los datos de la columna ref_des (tipo CLOB) en cada instancia con el siguiente SQL.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">select dbms_lob.getlength(ref_des) chr_len\n      ,lengthb(dbms_lob.substr(ref_des, dbms_lob.getlength(ref_des), 1)) byte_len\n      ,dump(dbms_lob.substr(ref_des, dbms_lob.getlength(ref_des), 1), 1016) dp\n      ,ref_des\n  from sub_mon_stat\n where ref_des is not null\n   and rownum &lt;= 1\n;<\/pre>\n\n\n\n<p><strong>\u25bc ORAUS7<\/strong><\/p>\n\n\n\n<p>El conjunto de caracteres de los datos CLOB es US7ASCII y los caracteres coreanos no se muestran normalmente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-1024x702.png\" alt=\"ORAUS7 CLOB \ub370\uc774\ud130 \ud655\uc778\" class=\"wp-image-11975\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-97.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Comprobar los datos CLOB de ORAUS7<\/figcaption><\/figure>\n<\/div>\n\n\n<p>El n\u00famero de caracteres (chr_len) es 3000 y el n\u00famero de bytes (byte_len) tambi\u00e9n es 3000. Es decir, se puede ver que un car\u00e1cter se almacena como un byte.<\/p>\n\n\n\n<p>No pude encontrar una manera de configurar NLS_LANG en SQL Developer, as\u00ed que lo ejecut\u00e9 en sqlplus y confirm\u00e9 que se mostraban los caracteres coreanos.<\/p>\n\n\n\n<p>Si NLS_LANG se establece en US7ASCII como se muestra a continuaci\u00f3n, se muestra el coreano.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98.png\"><img loading=\"lazy\" decoding=\"async\" width=\"873\" height=\"736\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98.png\" alt=\"ORAUS7 CLOB \ud55c\uae00 \ub370\uc774\ud130 \ud655\uc778 (sqlplus, NLS_LANG=US7ASCII)\" class=\"wp-image-11976\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98.png 873w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-300x253.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-768x647.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-14x12.png 14w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-24x20.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-36x30.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-98-48x40.png 48w\" sizes=\"auto, (max-width: 873px) 100vw, 873px\" \/><\/a><figcaption>Compruebe los datos coreanos de ORAUS7 CLOB (sqlplus, NLS_LANG=US7ASCII)<\/figcaption><\/figure>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">C:\\Users\\ymlee>set NLS_LANG=AMERICAN_AMERICA.US7ASCII\n\nC:\\Users\\ymlee>sqlplus leg\/leg@oraus7\n\nSQL*Plus: Release 11.2.0.1.0 Production on Sun Jul 24 21:42:43 2022\n\nCopyright (c) 1982, 2010, Oracle.  All rights reserved.\n\n\nConnected to:\nOracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production\nWith the Partitioning, OLAP, Data Mining and Real Application Testing options\n\nSQL> set pagesize 100\nSQL> set linesize 200\nSQL> select dbms_lob.getlength(ref_des) chr_len\n  2        ,lengthb(dbms_lob.substr(ref_des, dbms_lob.getlength(ref_des), 1)) byte_len\n  3        ,substr(dump(dbms_lob.substr(ref_des, dbms_lob.getlength(ref_des), 1), 1016), 1, 200) dp\n  4        ,ref_des\n  5    from sub_mon_stat\n  6   where ref_des is not null\n  7     and rownum &lt;= 1\n  8\nSQL> \/\n\n   CHR_LEN   BYTE_LEN\n---------- ----------\nDP\n--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\nREF_DES\n--------------------------------------------------------------------------------\n      3000       3000\nTyp=1 Len=3000 CharacterSet=US7ASCII: bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,bc,ad,bf,ef,bf,aa,\n\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\uc6b8\uc5ed\uc11c\n\n\nSQL><\/pre>\n\n\n\n<p><strong>\u25bc ORAMSWIN949<\/strong><\/p>\n\n\n\n<p>El conjunto de caracteres de los datos CLOB es KO16MSWIN949 y los caracteres coreanos se muestran normalmente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-1024x702.png\" alt=\"KO16MSWIN949 CLOB \ub370\uc774\ud130 \ud655\uc778\" class=\"wp-image-11977\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-99.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Compruebe los datos CLOB de KO16MSWIN949<\/figcaption><\/figure>\n<\/div>\n\n\n<p>El n\u00famero de caracteres (chr_len) es 1500 y el n\u00famero de bytes (byte_len) es 3000. Es decir, se puede ver que un car\u00e1cter se almacena como 2 bytes.<\/p>\n\n\n\n<p><strong>\u25bc ORAUTF<\/strong><\/p>\n\n\n\n<p>El conjunto de caracteres de los datos CLOB es AL32UTF8 y los caracteres coreanos se muestran normalmente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-1024x702.png\" alt=\"\" class=\"wp-image-11978\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-100.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Consultar datos ORAUTF CLOB<\/figcaption><\/figure>\n<\/div>\n\n\n<p>El n\u00famero de caracteres (chr_len) es 1334 y el n\u00famero de bytes (byte_len) es 4000. Es decir, se puede ver que un car\u00e1cter se almacena como 3 bytes.<\/p>\n\n\n\n<p>(El n\u00famero exacto de bytes es 4002, pero hay una peque\u00f1a diferencia porque el n\u00famero m\u00e1ximo de bytes devuelto por dbms_lob.substr es 4000)<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"6.3.2._CLOB_\ub370\uc774\ud130_\ubcc0\ud658\"><span class=\"ez-toc-section\" id=\"632_CLOB_%EB%8D%B0%EC%9D%B4%ED%84%B0_%EB%B3%80%ED%99%98\"><\/span>6.3.2. Conversi\u00f3n de datos CLOB<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Los datos CLOB no pueden ejecutarse select a trav\u00e9s de DB Link. Recibo el error &quot;ORA-22992: no se puede usar la ubicaci\u00f3n LOB seleccionada de la tabla remota&quot;.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-1024x702.png\" alt=\"CLOB \ub370\uc774\ud130\ub97c DB Link\ub85c query\ud560 \ub54c ORA-22992 \uc624\ub958\" class=\"wp-image-11979\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-101.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Error ORA-22992 al consultar datos CLOB con DB Link<\/figcaption><\/figure>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">select use_mon, line_num, sub_sta_id, sub_sta_nm, ride_pasgr_num, alight_pasgr_num, work_dt, commt\n      ,ref_des\n  from sub_mon_stat@dl_us7 a\n;\n\nORA-22992: \uc6d0\uaca9 \ud14c\uc774\ube14\ub85c \ubd80\ud130 \uc120\ud0dd\ub41c LOB \uc704\uce58\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4\n22992. 00000 -  \"cannot use LOB locators selected from remote tables\"\n*Cause:    A remote LOB column cannot be referenced.\n*Action:   Remove references to LOBs in remote tables.<\/pre>\n\n\n\n<p>Puede copiar datos utilizando la sintaxis CTAS (Crear tabla como selecci\u00f3n) de la siguiente manera.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">create table sub_mon_stat_from_oraus7\nas\nselect use_mon, line_num, sub_sta_id, sub_sta_nm, ride_pasgr_num, alight_pasgr_num, work_dt\n      ,ref_des\n  from sub_mon_stat@dl_us7 a\n;\n\nselect dbms_lob.getlength(ref_des) chr_len\n      ,lengthb(dbms_lob.substr(ref_des, 1333, 1)) byte_len\n      ,dump(dbms_lob.substr(ref_des, 1333, 1), 1016) dp\n      ,ref_des\n  from sub_mon_stat_from_oraus7\n where ref_des is not null\n   and rownum &lt;= 1\n;<\/pre>\n\n\n\n<p>Mirando el resultado de la ejecuci\u00f3n de la consulta anterior, el conjunto de caracteres de la columna CLOB se convirti\u00f3 a AL32UTF8, pero la cadena de caracteres coreanos no se convirti\u00f3 normalmente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-1024x702.png\" alt=\"CTAS\ub85c \uc0dd\uc131\ud55c Table \ub370\uc774\ud130 \ud655\uc778\" class=\"wp-image-11980\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-102.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Verifique los datos de la tabla creados con CTAS<\/figcaption><\/figure>\n<\/div>\n\n\n<p>El proceso de conversi\u00f3n de caracteres coreanos en una columna CLOB es el siguiente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103.png\"><img loading=\"lazy\" decoding=\"async\" width=\"612\" height=\"395\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103.png\" alt=\"CLOB \uceec\ub7fc\uc758 \ud55c\uae00\uc744 \ubcc0\ud658\ud558\ub294 \uacfc\uc815 \uc694\uc57d\" class=\"wp-image-11981\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103.png 612w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103-300x194.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103-24x15.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103-36x23.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-103-48x31.png 48w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><\/a><figcaption>Resumen del proceso de conversi\u00f3n de caracteres coreanos en columnas CLOB<\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\"><li>Cree una vista que convierta el tipo de datos de la columna CLOB a BLOB en la base de datos de origen (instancia #1, ORAUS7)<\/li><li>Crear tabla con sintaxis CTAS (Crear tabla como selecci\u00f3n) en la base de datos de destino (Instancia #3, ORAUTF)<\/li><li>Cree una tabla convirtiendo el tipo de datos BLOB de la tabla creada anteriormente al tipo CLOB<\/li><\/ol>\n\n\n\n<p>Ve\u00e1moslos uno por uno.<\/p>\n\n\n\n<p><strong>1. Cree una vista que convierta el tipo de datos de la columna CLOB a BLOB en la base de datos de origen (instancia #1, ORAUS7)<\/strong><\/p>\n\n\n\n<p>Si el tipo de datos de la columna CLOB se convierte a BLOB, el conjunto de caracteres no se convierte al consultar con DB Link.<\/p>\n\n\n\n<p>Cree una funci\u00f3n que convierta CLOB en BLOB utilizando el procedimiento DBMS_LOB.CONVERTTOBLOB de la siguiente manera.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">CREATE OR REPLACE FUNCTION FN_CLOB_TO_BLOB (P_CLOB CLOB) RETURN BLOB\nAS\n L_BLOB          BLOB;\n L_DEST_OFFSET   INTEGER := 1;\n L_SOURCE_OFFSET INTEGER := 1;\n L_LANG_CONTEXT  INTEGER := DBMS_LOB.DEFAULT_LANG_CTX;\n L_WARNING       INTEGER := DBMS_LOB.WARN_INCONVERTIBLE_CHAR;\nBEGIN\n  IF DBMS_LOB.GETLENGTH(P_CLOB) != 0 THEN\n      DBMS_LOB.CREATETEMPORARY(L_BLOB, TRUE);\n      DBMS_LOB.CONVERTTOBLOB\n      (\n       DEST_LOB    =>L_BLOB,\n       SRC_CLOB    =>P_CLOB,\n       AMOUNT      =>DBMS_LOB.LOBMAXSIZE,\n       DEST_OFFSET =>L_DEST_OFFSET,\n       SRC_OFFSET  =>L_SOURCE_OFFSET,\n       BLOB_CSID   =>DBMS_LOB.DEFAULT_CSID,\n       LANG_CONTEXT=>L_LANG_CONTEXT,\n       WARNING     =>L_WARNING\n      );\n  END IF;\n  RETURN L_BLOB;\nEND;<\/pre>\n\n\n\n<p>Luego, cree una vista usando la funci\u00f3n anterior.<\/p>\n\n\n\n<p>Para fines de prueba, solo se seleccionaron las filas con valores en algunas columnas y la columna CLOB REF_DES.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">CREATE OR REPLACE VIEW VW_SUB_MON_STAT_BLOB\nAS\nSELECT  USE_MON, SUB_STA_ID\n       ,FN_CLOB_TO_BLOB(REF_DES) REF_DES_BLOB\n  FROM  SUB_MON_STAT\n WHERE  REF_DES IS NOT NULL;<\/pre>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>2. Cree una tabla con sintaxis CTAS (Crear tabla como selecci\u00f3n) en la base de datos de destino (Instancia #3, ORAUTF)<\/strong><\/p>\n\n\n\n<p>Obtenga datos de DB Link con la siguiente sintaxis y cree una tabla.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">CREATE  TABLE SUB_MON_STAT_BLOB\nAS\nSELECT  A.*\n  FROM  VW_SUB_MON_STAT_BLOB@DL_US7 A;<\/pre>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>3. Cree una tabla convirtiendo el tipo de datos BLOB de la tabla creada anteriormente al tipo CLOB<\/strong><\/p>\n\n\n\n<p>Cree una funci\u00f3n que convierta BLOB en CLOB utilizando el procedimiento DBMS_LOB.CONVERTTOCLOB de la siguiente manera.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">CREATE OR REPLACE FUNCTION FN_BLOB_TO_CLOB (P_BLOB BLOB) RETURN CLOB\nAS\n L_CLOB          CLOB;\n L_DEST_OFFSET   INTEGER := 1;\n L_SOURCE_OFFSET INTEGER := 1;\n L_LANG_CONTEXT  INTEGER := DBMS_LOB.DEFAULT_LANG_CTX;\n L_WARNING       INTEGER := DBMS_LOB.WARN_INCONVERTIBLE_CHAR;\nBEGIN\n  DBMS_LOB.CREATETEMPORARY(L_CLOB, TRUE);\n  DBMS_LOB.CONVERTTOCLOB\n  (\n   DEST_LOB    =>L_CLOB,\n   SRC_BLOB    =>P_BLOB,\n   AMOUNT      =>DBMS_LOB.LOBMAXSIZE,\n   DEST_OFFSET =>L_DEST_OFFSET,\n   SRC_OFFSET  =>L_SOURCE_OFFSET,\n   --BLOB_CSID   =>DBMS_LOB.DEFAULT_CSID,\n   BLOB_CSID   =>846, -- NLS_CHARSET_ID('KO16MSWIN949')\n   LANG_CONTEXT=>L_LANG_CONTEXT,\n   WARNING     =>L_WARNING\n  );\n  RETURN L_CLOB;\nEND;<\/pre>\n\n\n\n<p>Entre los par\u00e1metros del procedimiento DBMS_LOB.CONVERTTOCLOB, BLOB_CSID significa &quot;El ID del conjunto de caracteres de los datos de origen&quot;.<\/p>\n\n\n\n<p>Para obtener m\u00e1s detalles, consulte el documento a continuaci\u00f3n.<\/p>\n\n\n\n<p><a href=\"https:\/\/docs.oracle.com\/cd\/E11882_01\/appdev.112\/e40758\/d_lob.htm#ARPLS602\" target=\"_blank\" rel=\"noreferrer noopener\">DBMS_LOB \u2013 Procedimiento CONVERTTOCLOB (oracle.com)<\/a><\/p>\n\n\n\n<p>BLOB_CSID debe especificarse como un valor entero, no como una cadena de caracteres, y el valor se puede conocer con la funci\u00f3n NLS_CHARSET_ID.<\/p>\n\n\n\n<p>Dado que el conjunto de caracteres de los datos originales es KO16MSWIN949, 846 se confirm\u00f3 ejecutando lo siguiente.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104.png\"><img loading=\"lazy\" decoding=\"async\" width=\"461\" height=\"194\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104.png\" alt=\"NLS_CHARSET_ID \ud568\uc218\ub85c BLOB_CSID \ud655\uc778\" class=\"wp-image-11982\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104.png 461w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104-300x126.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104-18x8.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104-24x10.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104-36x15.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-104-48x20.png 48w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><\/a><figcaption>Compruebe BLOB_CSID con la funci\u00f3n NLS_CHARSET_ID<\/figcaption><\/figure>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">SELECT NLS_CHARSET_ID('KO16MSWIN949')\n  FROM DUAL;<\/pre>\n\n\n\n<p>Y puede crear o consultar una tabla usando la funci\u00f3n anterior.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-auto-translation=\"\">CREATE  TABLE SUB_MON_STAT_BLOB_TO_CLOB\nAS\nSELECT  USE_MON, SUB_STA_ID\n       ,FN_BLOB_TO_CLOB(REF_DES_BLOB) REF_DES\n  FROM  SUB_MON_STAT_BLOB A;\n\nselect *\n  from sub_mon_stat_blob_to_clob\n;\n\n-- Table \uc0dd\uc131\ud558\uc9c0 \uc54a\uc744 \uacbd\uc6b0\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 query \uac00\ub2a5\nselect use_mon, sub_sta_id\n       ,fn_blob_to_clob(ref_des_blob) ref_des\n  from sub_mon_stat_blob\n;<\/pre>\n\n\n\n<p>Puede verificar que Hangul se haya convertido normalmente de la siguiente manera.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-1024x702.png\" alt=\"CLOB \ud55c\uae00 \ubcc0\ud658\uacb0\uacfc \ud655\uc778\" class=\"wp-image-11983\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-1024x702.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-300x206.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-768x527.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-18x12.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-24x16.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-36x25.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105-48x33.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-105.png 1050w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Compruebe el resultado de conversi\u00f3n de CLOB coreano<\/figcaption><\/figure>\n<\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p>Hasta este punto, hemos visto c\u00f3mo convertir el tipo CLOB, incluidos los caracteres coreanos en la base de datos del juego de caracteres US7ASCII, a AL32UTF8.<\/p>\n\n\n\n<p>Parece un poco complicado ya que se convierte a trav\u00e9s de varios procesos, pero no hay nada dif\u00edcil si lo miras paso a paso.<\/p>\n\n\n\n<p>Hasta este art\u00edculo, la serie sobre la conversi\u00f3n de juegos de caracteres de Oracle ha terminado.<\/p>\n\n\n\n<p>Espero poder ser de ayuda a alguien que lo necesite.<\/p>","protected":false},"excerpt":{"rendered":"<p>Echemos un vistazo al m\u00e9todo de conversi\u00f3n de tipo coreano CLOB. En la base de datos del juego de caracteres US7ASCII, puede comprobar c\u00f3mo convertir el tipo CLOB, incluido Hangul, a AL32UTF8 y el resultado de la conversi\u00f3n. Esta es una continuaci\u00f3n del art\u00edculo anterior. Conversi\u00f3n de juego de caracteres de Oracle(9): 6. M\u00e9todo de conversi\u00f3n de juego de caracteres de implementaci\u00f3n de usuario(2)...<\/p>","protected":false},"author":1,"featured_media":11981,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[254,255,259,260,263,242,248,249],"class_list":["post-11974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oracle","tag-us7ascii","tag-ko16mswin949","tag-al32utf8","tag-db-link","tag-dbms_lob","tag-oracle","tag-character-set-","tag-character-set-conversion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Oracle Character Set \ubcc0\ud658(10): 6.3. CLOB type \ud55c\uae00 \ubcc0\ud658 \ubc29\ubc95 - \uc0dd\uc0b0\uc131 Skill<\/title>\n<meta name=\"description\" content=\"CLOB type \ud55c\uae00 \ubcc0\ud658 \ubc29\ubc95 \uc5d0 \ub300\ud574 \uc0b4\ud3b4\ubcf8\ub2e4. US7ASCII character set DB\uc5d0\uc11c \ud55c\uae00\uc774 \ud3ec\ud568\ub41c CLOB type\uc744 AL32UTF8\ub85c \ubcc0\ud658\ud558\ub294 \ubc29\ubc95\uacfc \ubcc0\ud658 \uacb0\uacfc\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/prodskill.com\/es\/oracle-character-set-migration-10-convert-clob\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle Character Set \ubcc0\ud658(10): 6.3. 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