{"id":11852,"date":"2022-10-02T10:48:37","date_gmt":"2022-10-02T01:48:37","guid":{"rendered":"https:\/\/prodskill.com\/?p=11852"},"modified":"2022-10-04T23:53:04","modified_gmt":"2022-10-04T14:53:04","slug":"oracle-dbms-parallel-execute-2-chunk-by-rowid","status":"publish","type":"post","link":"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/","title":{"rendered":"2. ROWID-Partitionsmethode Parallelverarbeitungsfall (DBMS_PARALLEL_EXECUTE)"},"content":{"rendered":"<p>Werfen wir einen Blick auf den Fall der parallelen Verarbeitung der ROWID-Partitionierungsmethode mit Oracle DBMS_PARALLEL_EXECUTE.<\/p>\n\n\n\n<p>Dies ist eine Fortsetzung des vorherigen Artikels.<\/p>\n\n\n\n<p><a href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-1-overview\/\">1. \u00dcbersicht \u00fcber Parallelit\u00e4t in DML-Aufgaben (DBMS_PARALLEL_EXECUTE)<\/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;Inhaltsverzeichnis&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=\"Inhaltsverzeichnis umschalten\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Umschalten<\/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-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/#2_ROWID_%EB%B6%84%ED%95%A0_%EB%B0%A9%EC%8B%9D_%EB%B3%91%EB%A0%AC_%EC%B2%98%EB%A6%AC_%EC%82%AC%EB%A1%80\" >2. Parallelverarbeitungsfall des ROWID-Divisionsverfahrens<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/#21_ROWID_%EB%B6%84%ED%95%A0_%EB%B0%A9%EC%8B%9D_%EB%B3%91%EB%A0%AC_%EC%B2%98%EB%A6%AC_%EC%9E%91%EC%97%85_%EC%83%9D%EC%84%B1\" >2.1. Erstellen Sie ROWID-partitionierte parallele Verarbeitungsauftr\u00e4ge<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/#22_%EC%9E%91%EC%97%85_%EB%8B%A8%EC%9C%84_%EB%B6%84%ED%95%A0\" >2.2. Geteilte Arbeitseinheit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/#23_%EC%9E%91%EC%97%85_%EC%8B%A4%ED%96%89\" >2.3. Job ausgef\u00fchrt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/prodskill.com\/de\/oracle-dbms-parallel-execute-2-chunk-by-rowid\/#24_%EC%9E%91%EC%97%85_%EC%99%84%EB%A3%8C_%ED%99%95%EC%9D%B8_%EB%B0%8F_%EC%82%AD%EC%A0%9C\" >2.4. Aufgabenabschluss best\u00e4tigen und l\u00f6schen<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"2._ROWID_\ubd84\ud560_\ubc29\uc2dd\uc758_\ubcd1\ub82c_\ucc98\ub9ac_\uc0ac\ub840\"><span class=\"ez-toc-section\" id=\"2_ROWID_%EB%B6%84%ED%95%A0_%EB%B0%A9%EC%8B%9D_%EB%B3%91%EB%A0%AC_%EC%B2%98%EB%A6%AC_%EC%82%AC%EB%A1%80\"><\/span>2. Parallelverarbeitungsfall des ROWID-Divisionsverfahrens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2.1._\uc791\uc5c5_\uc0dd\uc131\"><span class=\"ez-toc-section\" id=\"21_ROWID_%EB%B6%84%ED%95%A0_%EB%B0%A9%EC%8B%9D_%EB%B3%91%EB%A0%AC_%EC%B2%98%EB%A6%AC_%EC%9E%91%EC%97%85_%EC%83%9D%EC%84%B1\"><\/span>2.1. Erstellen Sie ROWID-partitionierte parallele Verarbeitungsauftr\u00e4ge<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>CREATE_TASK( ), um die Aufgabe zu erstellen.<\/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=\"\">-- 1\ub2e8\uacc4: \uc791\uc5c5\uc0dd\uc131\nBEGIN\n  \u200b\u200bDBMS_PARALLEL_EXECUTE.CREATE_TASK(TASK_NAME => 'DPE_TEST(BY ROWID)');\nEND;\n\/<\/pre>\n\n\n\n<p>Das Ergebnis der Auftragserstellung kann wie folgt \u00fcberpr\u00fcft werden.<\/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=\"\">-- \uc791\uc5c5 \uc0dd\uc131 \ud655\uc778\nSELECT * FROM USER_PARALLEL_EXECUTE_TASKS;<\/pre>\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-43.png\"><img loading=\"lazy\" decoding=\"async\" width=\"715\" height=\"609\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43.png\" alt=\"1\ub2e8\uacc4: \uc791\uc5c5 \uc0dd\uc131 \ud655\uc778\" class=\"wp-image-11853\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43.png 715w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43-300x256.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43-14x12.png 14w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43-24x20.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43-36x31.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-43-48x41.png 48w\" sizes=\"auto, (max-width: 715px) 100vw, 715px\" \/><\/a><figcaption>Schritt 1: Best\u00e4tigen Sie die Aufgabenerstellung<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Aus dem obigen Ergebnis kann best\u00e4tigt werden, dass die Aufgabe erstellt wurde und der STATUS ERSTELLT ist.<\/p>\n\n\n\n<p>Als Referenz hat der STATUS einer Aufgabe die Werte CHUNKED, CHUNKING, CHUNKING_FAILED, CRASHED, CREATED, FINISHED, FINISHED_WITH_ERROR, PROCESSING, und jede Bedeutung ist wie folgt.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>CHUNKED: Chunk erstellt, noch keiner Aufgabe zugewiesen<\/li><li>CHUNKING: Chunks erstellen<\/li><li>CHUNKING_FAILED: Beim Erstellen des Chunks ist ein Fehler aufgetreten<\/li><li>CRASHED: W\u00e4hrend der Aufgabenausf\u00fchrung ist ein Datenbankabsturz oder Jobprozessabsturz aufgetreten, und der Fehler wurde nicht aufgezeichnet und beendet.<\/li><li>REATED: Task erstellt (noch kein Chunk erstellt)<\/li><li>FINISHED: Alle Chunks ohne Fehler abgeschlossen<\/li><li>FINISHED_WITH_ERROR: Alle Chunks abgeschlossen, aber einige Fehler sind aufgetreten<\/li><li>PROCESSING: Tosk hat mit der Ausf\u00fchrung begonnen, einige der Chunks sind in Bearbeitung oder abgeschlossen<\/li><\/ul>\n\n\n\n<p>* Bezug: <a href=\"http:\/\/docs.oracle.com\/cd\/E11882_01\/appdev.112\/e40758\/d_parallel_ex.htm#ARPLS67333\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/docs.oracle.com\/cd\/E11882_01\/appdev.112\/e40758\/d_parallel_ex.htm#ARPLS67333<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2.2._\uc791\uc5c5_\ub2e8\uc704_\ubd84\ud560\"><span class=\"ez-toc-section\" id=\"22_%EC%9E%91%EC%97%85_%EB%8B%A8%EC%9C%84_%EB%B6%84%ED%95%A0\"><\/span>2.2. Geteilte Arbeitseinheit<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>CREATE_CHUNKS_BY_ROWID( ,<table> ,<table> , , ), um die Arbeitseinheit aufzuteilen.<\/p>\n\n\n\n<p>ist ein BOOLEAN-Typ, wenn TRUE bedeutet Zeilenanzahl und FALSE bedeutet Blockanzahl.<\/p>\n\n\n\n<p>F\u00fchren Sie die folgenden Schritte aus, um Chunks zu erstellen, die die Zeilenanzahl der Tabelle Z_DPE_TEST_TAB in 10.000 Zeilen aufteilen.<\/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=\"\">-- 2\ub2e8\uacc4: \uc791\uc5c5 \ub2e8\uc704 \ubd84\ud560\nBEGIN\n  DBMS_PARALLEL_EXECUTE.CREATE_CHUNKS_BY_ROWID(TASK_NAME   => 'DPE_TEST(BY ROWID)',\n                                               TABLE_OWNER => USER,\n                                               TABLE_NAME  => 'Z_DPE_TEST_TAB',\n                                               BY_ROW      => TRUE,\n                                               CHUNK_SIZE  => 10000);\nEND;\n\/<\/pre>\n\n\n\n<p>Lassen Sie uns den Teilungsstatus der Arbeitseinheit \u00fcberpr\u00fcfen.<\/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=\"\">-- \uc791\uc5c5 \ubd84\ud560 \uc0c1\ud0dc \ud655\uc778\nSELECT *\n  \u200b\u200bFROM USER_PARALLEL_EXECUTE_CHUNKS\n \u200bWHERE TASK_NAME = 'DPE_TEST(BY ROWID)';<\/pre>\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-44.png\"><img loading=\"lazy\" decoding=\"async\" width=\"715\" height=\"609\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44.png\" alt=\"2\ub2e8\uacc4: \uc791\uc5c5 \ubd84\ud560 \uc0c1\ud0dc \ud655\uc778\" class=\"wp-image-11854\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44.png 715w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44-300x256.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44-14x12.png 14w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44-24x20.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44-36x31.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-44-48x41.png 48w\" sizes=\"auto, (max-width: 715px) 100vw, 715px\" \/><\/a><figcaption>Schritt 2: \u00dcberpr\u00fcfen Sie den Aufgabenteilungsstatus<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Es kann best\u00e4tigt werden, dass der STATUS jedes Chunks zum Zeitpunkt der Teilung UNASSIGNED ist. Als Referenz hat der STATUS des Chunks die Werte UNASSIGNED, ASSIGNED, PROCESSED und PROCESSED_WITH_ERROR, und jede Bedeutung ist wie folgt.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>UNASSIGNED: Chunk erstellt, noch keiner Aufgabe zugewiesen<\/li><li>ASSIGNED: Chunk ist der Aufgabe zugewiesen und wird ausgef\u00fchrt<\/li><li>PROCESSED: Der Vorgang wurde ohne Fehler abgeschlossen<\/li><li>PROCESSED_WITH_ERROR: Die Operation wurde abgeschlossen, aber w\u00e4hrend der Ausf\u00fchrung ist ein Fehler aufgetreten<\/li><\/ul>\n\n\n\n<p>* Bezug:&nbsp;<a href=\"http:\/\/docs.oracle.com\/cd\/E11882_01\/appdev.112\/e40758\/d_parallel_ex.htm#ARPLS67333\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/docs.oracle.com\/cd\/E11882_01\/appdev.112\/e40758\/d_parallel_ex.htm#ARPLS67333<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2.3._\uc791\uc5c5_\uc2e4\ud589\"><span class=\"ez-toc-section\" id=\"23_%EC%9E%91%EC%97%85_%EC%8B%A4%ED%96%89\"><\/span>2.3. Job ausgef\u00fchrt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>RUN_TASK( , , , ), um die Aufgabe auszuf\u00fchren.<\/p>\n\n\n\n<p>LANGUAGE_FLAG bedeutet hier die Standardversion f\u00fcr Oracle zur Verarbeitung von SQL_STMT, und DBMS_SQL.NATIVE kann als Standard verwendet werden.<\/p>\n\n\n\n<p>Als Referenz ist der Inhalt des Oracle-Dokuments wie folgt:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>V6 (oder 0) gibt das Verhalten von Version 6 an<\/li><li>NATIVE (oder 1) gibt das normale Verhalten f\u00fcr die Datenbank an, mit der das Programm verbunden ist<\/li><li>V7 (oder 2) gibt das Verhalten der Oracle-Datenbankversion 7 an<\/li><\/ul>\n\n\n\n<p>PARALLEL_LEVEL bedeutet die Anzahl der gleichzeitig auszuf\u00fchrenden Jobs, d. h. den Parallelit\u00e4tsgrad (DOP), und kann gleich oder kleiner als die Anzahl der Chunks sein, die Arbeitseinheiten sind. Im gleichen Fall verarbeitet ein Job einen Chunk, und in einem kleinen Fall verarbeitet ein Job mehrere Chunks.<\/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=\"\">-- \ub3d9\uc2dc \uc2e4\ud589\ud604\ud669 \ud655\uc778: \uc791\uc5c5 \uc2e4\ud589\uc804\nSELECT AUDSID, COUNT(*)\n  FROM Z_DPE_TEST_TAB\n GROUP BY AUDSID\n ORDER BY AUDSID;<\/pre>\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-45.png\"><img loading=\"lazy\" decoding=\"async\" width=\"715\" height=\"609\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45.png\" alt=\"3\ub2e8\uacc4: \ub3d9\uc2dc \uc2e4\ud589\ud604\ud669 \ud655\uc778(\uc791\uc5c5 \uc2e4\ud589\uc804)\" class=\"wp-image-11855\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45.png 715w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45-300x256.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45-14x12.png 14w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45-24x20.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45-36x31.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-45-48x41.png 48w\" sizes=\"auto, (max-width: 715px) 100vw, 715px\" \/><\/a><figcaption>Schritt 3: \u00dcberpr\u00fcfen Sie den Status der gleichzeitigen Ausf\u00fchrung (vor der Aufgabenausf\u00fchrung)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Wenn Sie den COUNT f\u00fcr jede AUDSID \u00fcberpr\u00fcfen, bevor Sie die Aufgabe ausf\u00fchren, k\u00f6nnen Sie sehen, dass alle Daten auf Null gesetzt sind und noch nicht ausgef\u00fchrt wurden.<\/p>\n\n\n\n<p>Lassen Sie uns nun den Job ausf\u00fchren.<\/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=\"\">-- 3\ub2e8\uacc4: \uc791\uc5c5 \uc2e4\ud589\nDECLARE\n  L_SQL_STMT VARCHAR2(32767);\nBEGIN\n  L_SQL_STMT := 'UPDATE  Z_DPE_TEST_TAB\n                    SET  VAL = ROUND(DBMS_RANDOM.VALUE(1,10000))\n                        ,AUDSID = SYS_CONTEXT(''USERENV'',''SESSIONID'')\n                  WHERE  ROWID BETWEEN :START_ID AND :END_ID';\n\n  DBMS_PARALLEL_EXECUTE.RUN_TASK(TASK_NAME      => 'DPE_TEST(BY ROWID)',\n                                 SQL_STMT       => L_SQL_STMT,\n                                 LANGUAGE_FLAG  => DBMS_SQL.NATIVE,\n                                 PARALLEL_LEVEL => 10);\nEND;\n\/<\/pre>\n\n\n\n<p>Ausgef\u00fchrtes SQL gibt den Ausf\u00fchrungsbereich mit zwei Bindungsvariablen an: START_ID und :END_ID. Wenn dieser Variablenname anders verwendet wird, tritt ein Fehler auf, also achten Sie darauf, diesen Namen zu verwenden.<\/p>\n\n\n\n<p>Das hier ausgef\u00fchrte SQL wird geschrieben, um zu pr\u00fcfen, welche Sitzung die aktuelle Zeile aktualisiert hat, indem ein zuf\u00e4lliger Wert in der VAL-Spalte aktualisiert und der aktuelle SESSIONID-Wert in der AUDSID-Spalte zum Testen aktualisiert wird.<\/p>\n\n\n\n<p>Als Referenz hat die Spalte AUDSID die gleiche Bedeutung wie V$SESSION.AUDSID. Wenn jeder Chunk-Unit-Vorgang lange dauert, kann die Sitzungs\u00fcberwachung durch Abfragen von V$SESSION mit AUDSID durchgef\u00fchrt werden.<\/p>\n\n\n\n<p>Wenn Sie w\u00e4hrend der Ausf\u00fchrung das folgende SQL ausf\u00fchren, k\u00f6nnen Sie \u00fcberpr\u00fcfen, wie viele Zeilen in wie vielen Sitzungen aktualisiert werden.<\/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=\"\">-- \ub3d9\uc2dc \uc2e4\ud589\ud604\ud669 \ud655\uc778: \uc791\uc5c5 \uc2e4\ud589\uc911\nSELECT AUDSID, COUNT(*)\n  FROM Z_DPE_TEST_TAB\n GROUP BY AUDSID\n ORDER BY AUDSID;<\/pre>\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-46.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-1024x529.png\" alt=\"3\ub2e8\uacc4: \ub3d9\uc2dc \uc2e4\ud589\ud604\ud669 \ud655\uc778(\uc791\uc5c5 \uc2e4\ud589\uc911)\" class=\"wp-image-11856\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-1024x529.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-300x155.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-768x397.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-18x9.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-24x12.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-36x19.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46-48x25.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-46.png 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Schritt 3: Status der gleichzeitigen Ausf\u00fchrung pr\u00fcfen (Aufgabenausf\u00fchrung)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Lassen Sie uns den Fortschritt jedes Chunks \u00fcberpr\u00fcfen, in den die Arbeit aufgeteilt ist, nicht die Sitzungseinheit.<\/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=\"\">-- \uc791\uc5c5\uc758 Chunk\ubcc4 \uc9c4\ud589\uc0c1\ud669\/\uc644\ub8cc \ud655\uc778\nSELECT *\n  FROM USER_PARALLEL_EXECUTE_CHUNKS\nWHERE TASK_NAME = 'DPE_TEST(BY ROWID)';<\/pre>\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-47.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-1024x529.png\" alt=\"3\ub2e8\uacc4: \uc791\uc5c5\uc758 Chunk\ubcc4 \uc9c4\ud589\uc0c1\ud669\/\uc644\ub8cc \ud655\uc778\" class=\"wp-image-11857\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-1024x529.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-300x155.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-768x397.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-18x9.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-24x12.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-36x19.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47-48x25.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-47.png 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Schritt 3: \u00dcberpr\u00fcfen Sie den Fortschritt\/die Fertigstellung jedes Teils der Aufgabe<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Aus dem obigen Ergebnis k\u00f6nnen Sie ersehen, dass STATUS in PROCESSED ge\u00e4ndert wird und START_TS (Startzeit) und END_TS (Endzeit) verwaltet werden.<\/p>\n\n\n\n<p>Um den Fortschritt nach Chunk-Status zu \u00fcberpr\u00fcfen, f\u00fchren Sie die folgende SQL aus.<\/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=\"\">-- Chunk\uc758 \uc0c1\ud0dc\ubcc4 \uc9c4\ud589\uc0c1\ud669\nSELECT STATUS, COUNT(*)\n  FROM USER_PARALLEL_EXECUTE_CHUNKS\n WHERE TASK_NAME = 'DPE_TEST(BY ROWID)'\nGROUP BY STATUS;<\/pre>\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-48.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-1024x529.png\" alt=\"3\ub2e8\uacc4: Chunk\uc758 \uc0c1\ud0dc\ubcc4 \uc9c4\ud589\uc0c1\ud669 \ud655\uc778\" class=\"wp-image-11858\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-1024x529.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-300x155.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-768x397.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-18x9.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-24x12.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-36x19.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48-48x25.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-48.png 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Schritt 3: \u00dcberpr\u00fcfen Sie den Chunk-Fortschritt nach Status<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Aus dem obigen Ergebnis kann best\u00e4tigt werden, dass 172 Chunks im PROCESSED-Status abgeschlossen wurden. Da das Bild aufgenommen wurde, nachdem der Auftrag abgeschlossen war, wurde nur ein Status aufgezeichnet. Wenn der Vorgang lange dauert, k\u00f6nnen Sie die Anzahl der Chunks f\u00fcr jeden Status \u00fcberpr\u00fcfen.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2.4._\uc791\uc5c5_\uc644\ub8cc_\ud655\uc778_\ubc0f_\uc0ad\uc81c\"><span class=\"ez-toc-section\" id=\"24_%EC%9E%91%EC%97%85_%EC%99%84%EB%A3%8C_%ED%99%95%EC%9D%B8_%EB%B0%8F_%EC%82%AD%EC%A0%9C\"><\/span>2.4. Aufgabenabschluss best\u00e4tigen und l\u00f6schen<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>DROP_TASK( ), um den Auftrag zu l\u00f6schen.<\/p>\n\n\n\n<p>Als Referenz: Wenn Sie ihn nicht l\u00f6schen, tritt der Fehler ORA-29497: Doppelter Aufgabenname (DUPLICATE_TASK_NAME) auf, wenn sp\u00e4ter eine Aufgabe mit demselben TASK_NAME erstellt wird.<\/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=\"\">-- \uc791\uc5c5 \uc644\ub8cc \ud655\uc778\nSELECT *\n  FROM USER_PARALLEL_EXECUTE_TASKS;<\/pre>\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-49.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-1024x529.png\" alt=\"\uc791\uc5c5 \uc644\ub8cc \ud655\uc778\" class=\"wp-image-11859\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-1024x529.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-300x155.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-768x397.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-18x9.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-24x12.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-36x19.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49-48x25.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-49.png 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Best\u00e4tigen Sie den Abschluss der Aufgabe<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Aus dem obigen Ergebnis kann best\u00e4tigt werden, dass der STATUS der Aufgabe mit FINISHED abgeschlossen wurde.<\/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=\"\">-- 4\ub2e8\uacc4: \uc791\uc5c5 \uc644\ub8cc \ud655\uc778 \ubc0f \uc791\uc5c5 \uc0ad\uc81c\nBEGIN\n  DBMS_PARALLEL_EXECUTE.DROP_TASK(TASK_NAME => 'DPE_TEST(BY ROWID)');\nEND;\n\/<\/pre>\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-50.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"529\" src=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-1024x529.png\" alt=\"4 \ub2e8\uacc4: \uc791\uc5c5 \uc644\ub8cc \ud655\uc778 \ubc0f \uc791\uc5c5 \uc0ad\uc81c\" class=\"wp-image-11860\" srcset=\"https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-1024x529.png 1024w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-300x155.png 300w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-768x397.png 768w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-18x9.png 18w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-24x12.png 24w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-36x19.png 36w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50-48x25.png 48w, https:\/\/prodskill.com\/wp-content\/uploads\/2022\/10\/image-50.png 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Schritt 4: Auftragsabschluss pr\u00fcfen und Auftrag l\u00f6schen<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Wenn Sie die Ansicht USER_PARALLEL_EXECUTE_TASKS erneut \u00fcberpr\u00fcfen, nachdem Sie DROP_TASK ausgef\u00fchrt haben, k\u00f6nnen Sie sehen, dass die Aufgabe gel\u00f6scht wurde.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<p>Bisher haben wir uns einen einfachen Fall der parallelen Verarbeitung der ROWID-Partitionierungsmethode angesehen.<\/p>\n\n\n\n<p>Als n\u00e4chstes schauen wir uns an, wie einheitlich die durch ROWID geteilten Arbeitseinheiten sind, ob es keine Auslassungen gibt und wie die Korrelation zwischen der Anzahl der Chunks und der Anzahl der Jobs (Parallelit\u00e4t) ist.<\/p>","protected":false},"excerpt":{"rendered":"<p>Werfen wir einen Blick auf den Fall der parallelen Verarbeitung der ROWID-Partitionierungsmethode mit Oracle DBMS_PARALLEL_EXECUTE. Dies ist eine Fortsetzung des vorherigen Artikels. 1. \u00dcberblick \u00fcber die Parallelverarbeitung von DML-Aufgaben (DBMS_PARALLEL_EXECUTE) 2. Beispiel f\u00fcr die ROWID-Partitionierung Parallelverarbeitung 2.1. Erstellen Sie eine ROWID-Partitionierungsaufgabe f\u00fcr die parallele Verarbeitung CREATE_TASK( ), um die Aufgabe zu erstellen. Das Ergebnis der Auftragserstellung kann wie folgt \u00fcberpr\u00fcft werden. Aus dem obigen Ergebnis kann best\u00e4tigt werden, dass die Aufgabe erstellt wurde und der STATUS ERSTELLT ist. Beachten Sie, dass,...<\/p>","protected":false},"author":1,"featured_media":11853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[242,243,244,245,246],"class_list":["post-11852","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oracle","tag-oracle","tag-dbms_parallel_execute","tag-244","tag-dml-parallel-processing","tag-dml-"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2. 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