{"id":6099,"date":"2026-09-14T07:00:00","date_gmt":"2026-09-14T04:00:00","guid":{"rendered":"https:\/\/www.dataplatform.gr\/?p=6099"},"modified":"2026-09-14T14:15:35","modified_gmt":"2026-09-14T11:15:35","slug":"pos-kanoyme-bulk-export-import-sti-postgresql-pg_dump","status":"publish","type":"post","link":"https:\/\/www.dataplatform.gr\/en\/pos-kanoyme-bulk-export-import-sti-postgresql-pg_dump\/","title":{"rendered":"How to do Bulk Export Import in PostgreSQL (pg_dump)"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u038c\u03c3\u03bf\u03b9 \u03c0\u03c1\u03bf\u03b5\u03c1\u03c7\u03cc\u03bc\u03b1\u03c3\u03c4\u03b5 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03ba\u03cc\u03c3\u03bc\u03bf \u03c4\u03b7\u03c2 Oracle \u03ba\u03b1\u03b9 \u03c4\u03bf Data Pump (<code>expdp<\/code>\/<code>impdp<\/code>), \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03ac\u03c1\u03b8\u03c1\u03bf \u03b8\u03b1 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03b1 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03c4\u03b7\u03c2 PostgreSQL <code>pg_dump<\/code> and <code>pg_restore<\/code>. \u03a4\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03b1\u03c5\u03c4\u03ac \u03bc\u03b1\u03c2 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03bd\u03b1 \u03c4\u03c1\u03ad\u03be\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2 \u03bc\u03b5 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 threads, \u03bc\u03b5\u03bc\u03bf\u03bd\u03bf\u03bc\u03ad\u03bd\u03b1 schemas \u03ba\u03b1\u03b9 \u03c0\u03af\u03bd\u03b1\u03ba\u03b5\u03c2 \u03b1\u03c0\u03bf\u03c6\u03b5\u03cd\u03b3\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b1\u03c5\u03c4\u03bf\u03c7\u03c1\u03bf\u03bd\u03b1 \u03c4\u03c5\u03c0\u03b9\u03ba\u03ad\u03c2 \u03c0\u03b1\u03b3\u03af\u03b4\u03b5\u03c2 \u03bf\u03c0\u03c9\u03c2 \u03c4\u03b1 Primary Key violations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0391\u03c2 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c0\u03c1\u03b1\u03ba\u03c4\u03b9\u03ba\u03ac \u03bc\u03b5\u03c1\u03b9\u03ba\u03ac \u03c3\u03b5\u03bd\u03ac\u03c1\u03b9\u03b1 \u03c3\u03b5 \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bulk Export (pg_dump)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0393\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03ac\u03c1\u03bf\u03c5\u03bc\u03b5 \u03b1\u03bd\u03c4\u03af\u03b3\u03c1\u03b1\u03c6\u03b1 \u03b1\u03c3\u03c6\u03b1\u03bb\u03b5\u03af\u03b1\u03c2, \u03b1\u03be\u03b9\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bc\u03b5 \u03c4\u03b9\u03c2 \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03b5\u03c2 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03c4\u03c1\u03bf\u03c5\u03c2 \u03b1\u03bd\u03ac\u03bb\u03bf\u03b3\u03b1 \u03bc\u03b5 \u03c4\u03bf \u03b1\u03bd \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03c0\u03b1\u03c1\u03b1\u03bb\u03bb\u03b7\u03bb\u03af\u03b1 \u03ae \u03c3\u03c4\u03bf\u03c7\u03b5\u03c5\u03bc\u03ad\u03bd\u03bf export.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u039f\u03bb\u03b9\u03ba\u03cc Export \u03bc\u03b5 \u03a0\u03b1\u03c1\u03b1\u03bb\u03bb\u03b7\u03bb\u03af\u03b1 (Directory)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u038c\u03c4\u03b1\u03bd \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03bd\u03b1 \u03b5\u03ba\u03bc\u03b5\u03c4\u03b1\u03bb\u03bb\u03b5\u03c5\u03c4\u03bf\u03cd\u03bc\u03b5 \u03c0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ac CPU threads <code>-j<\/code> \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03ac\u03c1\u03bf\u03c5\u03bc\u03b5 \u03b3\u03c1\u03ae\u03b3\u03bf\u03c1\u03b1 \u03bc\u03b9\u03b1 \u03bf\u03bb\u03cc\u03ba\u03bb\u03b7\u03c1\u03b7 \u03b2\u03ac\u03c3\u03b7, \u03b7 PostgreSQL \u03b1\u03c0\u03b1\u03b9\u03c4\u03b5\u03af \u03b1\u03c0\u03bf\u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03c4\u03bf directory format (<code>-F d<\/code>):<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_dump -U postgres -d db_test -F d -b -v -j 4 -f \/tmp\/backup_dir\/<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>-F d<\/code><\/strong>: \u0394\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03b5\u03af \u03ad\u03bd\u03b1\u03bd \u03c6\u03ac\u03ba\u03b5\u03bb\u03bf (\u03c0\u03c1\u03bf\u03c3\u03bf\u03c7\u03ae: \u03b4\u03b5\u03bd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03c5\u03bc\u03ad\u03bd\u03c9\u03c2) \u03cc\u03c0\u03bf\u03c5 \u03b3\u03c1\u03ac\u03c6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 \u03c4\u03b1 \u03ba\u03bf\u03bc\u03bc\u03ac\u03c4\u03b9\u03b1 \u03c4\u03bf\u03c5 backup.<\/li>\n\n\n\n<li><strong><code>-b<\/code><\/strong>: \u03a3\u03c5\u03bc\u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 \u03c4\u03b1 Large Objects (BLOB).<\/li>\n\n\n\n<li><strong><code>-v<\/code><\/strong>: \u0395\u03bd\u03b5\u03c1\u03b3\u03bf\u03c0\u03bf\u03b9\u03b5\u03af \u03c4\u03bf verbose mode \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03b6\u03c9\u03bd\u03c4\u03b1\u03bd\u03ac \u03c4\u03b7\u03bd \u03b5\u03be\u03ad\u03bb\u03b9\u03be\u03b7.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"658\" height=\"416\" src=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-01.png\" alt=\"\" class=\"wp-image-6100\" srcset=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-01.png 658w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-01-300x190.png 300w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-01-18x12.png 18w\" sizes=\"auto, (max-width: 658px) 100vw, 658px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Export \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 Schema<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0391\u03bd \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03bd\u03b1 \u03b1\u03c0\u03bf\u03bc\u03bf\u03bd\u03ce\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bf\u03bb\u03cc\u03ba\u03bb\u03b7\u03c1\u03bf \u03c4\u03bf schema <code>public<\/code> \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03c5\u03bc\u03c0\u03b9\u03b5\u03c3\u03bc\u03ad\u03bd\u03bf custom file (<code>-F c<\/code>):<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_dump -U postgres -d db_test -n public -F c -v -f \/tmp\/backup_dir\/public.dump<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>-n public<\/code><\/strong>: \u03a0\u03b5\u03c1\u03b9\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03bf export \u03b1\u03c0\u03bf\u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03c3\u03c4\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03b1 \u03c4\u03bf\u03c5 \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 schema.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Export \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03a0\u03af\u03bd\u03b1\u03ba\u03b1<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0393\u03b9\u03b1 \u03bd\u03b1 \u03b1\u03c0\u03bf\u03bc\u03bf\u03bd\u03ce\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bc\u03cc\u03bd\u03bf \u03ad\u03bd\u03b1\u03bd \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 (\u03c0.\u03c7. \u03c4\u03bf\u03bd <code>public.customers<\/code>):<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_dump -U postgres -d db_test -t public.customers -F c -v -f \/tmp\/backup_dir\/table_customers.dump<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>-t public.customers<\/code><\/strong>: \u03a3\u03c4\u03bf\u03c7\u03b5\u03cd\u03b5\u03b9 \u03b1\u03c0\u03bf\u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03c3\u03c4\u03bf\u03bd \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf \u03c0\u03af\u03bd\u03b1\u03ba\u03b1.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u0388\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03a0\u03b5\u03c1\u03b9\u03b5\u03c7\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd (Listing)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u03a0\u03c1\u03b9\u03bd \u03c0\u03c1\u03bf\u03c7\u03c9\u03c1\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03b5 \u03bf\u03c0\u03bf\u03b9\u03b1\u03b4\u03ae\u03c0\u03bf\u03c4\u03b5 \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03bf\u03c1\u03ac, \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03b5\u03bb\u03ad\u03b3\u03be\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b9 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03c2 \u03c0\u03b5\u03c1\u03b9\u03ad\u03c7\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03c3\u03c5\u03bc\u03c0\u03b9\u03b5\u03c3\u03bc\u03ad\u03bd\u03bf dump \u03b1\u03c1\u03c7\u03b5\u03af\u03bf \u03c7\u03c9\u03c1\u03af\u03c2 \u03bd\u03b1 \u03c4\u03bf \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03bf\u03c5\u03bc\u03b5, \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03ac\u03bc\u03b5\u03c4\u03c1\u03bf <code>-l<\/code> (list):<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_restore -l \/tmp\/backup_dir\/public.dump<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0391\u03c5\u03c4\u03ae \u03b7 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ae \u03bc\u03b1\u03c2 \u03c4\u03c5\u03c0\u03ce\u03bd\u03b5\u03b9 \u03cc\u03bb\u03bf \u03c4\u03bf Table of Contents (TOC) \u03bc\u03b5 \u03c4\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03b1, \u03c4\u03b1 indexes \u03ba\u03b1\u03b9 \u03c4\u03b1 views \u03c0\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03bf\u03b8\u03b7\u03ba\u03b5\u03c5\u03bc\u03ad\u03bd\u03b1 \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03b1\u03c1\u03c7\u03b5\u03af\u03bf.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"656\" height=\"415\" src=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-02.png\" alt=\"\" class=\"wp-image-6101\" srcset=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-02.png 656w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-02-300x190.png 300w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-02-18x12.png 18w\" sizes=\"auto, (max-width: 656px) 100vw, 656px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bulk Import (pg_restore)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u039a\u03b1\u03c4\u03ac \u03c4\u03bf import, \u03c4\u03bf \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b6\u03ae\u03c4\u03b7\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03c3\u03c5\u03bd\u03b1\u03bd\u03c4\u03ac\u03bc\u03b5 \u03c3\u03c5\u03c7\u03bd\u03ac \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf\u03b9 \u03b4\u03b9\u03c0\u03bb\u03cc\u03c4\u03c5\u03c0\u03b5\u03c2 \u03b5\u03b3\u03b3\u03c1\u03b1\u03c6\u03ad\u03c2 (<code>duplicate key value violates unique constraint<\/code>) \u03b1\u03bd \u03bf\u03b9 \u03c0\u03af\u03bd\u03b1\u03ba\u03b5\u03c2 \u03c0\u03c1\u03bf\u03bf\u03c1\u03b9\u03c3\u03bc\u03bf\u03cd \u03c0\u03b5\u03c1\u03b9\u03b5\u03c7\u03cc\u03bc\u03b5\u03bd\u03b1 \u03ae\u03b4\u03b7 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03b1. \u03a7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03c4\u03c1\u03bf\u03c5\u03c2 <code>--clean<\/code> and <code>--if-exists<\/code>, \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03c4\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03b1 \u03ba\u03b1\u03b8\u03b1\u03c1\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c0\u03c1\u03b9\u03bd \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03b7\u03b8\u03bf\u03cd\u03bd.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u039f\u03bb\u03b9\u03ba\u03cc Import \u03bc\u03b5 \u03a0\u03b1\u03c1\u03b1\u03bb\u03bb\u03b7\u03bb\u03af\u03b1 \u03b1\u03c0\u03cc Directory<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0397 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ae \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03b5\u03b9 \u03bf\u03bb\u03cc\u03ba\u03bb\u03b7\u03c1\u03bf \u03c4\u03bf\u03bd \u03c6\u03ac\u03ba\u03b5\u03bb\u03bf \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 (<code>-j 4<\/code>), \u03ba\u03ac\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03ba\u03b1\u03b8\u03b1\u03c1\u03b9\u03c3\u03bc\u03cc \u03c4\u03c9\u03bd \u03c0\u03b1\u03bb\u03b9\u03ce\u03bd \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03b9\u03bc\u03ad\u03bd\u03c9\u03bd (<code>--clean<\/code>):<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_restore -U postgres -d db_test -F d --clean --if-exists -v -j 4 \/tmp\/backup_dir\/<\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"657\" height=\"413\" src=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-03.png\" alt=\"\" class=\"wp-image-6102\" srcset=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-03.png 657w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-03-300x189.png 300w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2026\/08\/pgeid-03-18x12.png 18w\" sizes=\"auto, (max-width: 657px) 100vw, 657px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Import \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 Schema<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0397 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ae \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03b5\u03b9 \u03bc\u03b5 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1 \u03bc\u03cc\u03bd\u03bf \u03c4\u03bf schema <code>public<\/code>, \u03b4\u03b9\u03b1\u03b3\u03c1\u03ac\u03c6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03c5\u03c7\u03cc\u03bd \u03c3\u03c5\u03b3\u03ba\u03c1\u03bf\u03c5\u03cc\u03bc\u03b5\u03bd\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03b1 \u03c0\u03bf\u03c5 \u03c5\u03c0\u03ae\u03c1\u03c7\u03b1\u03bd \u03ae\u03b4\u03b7:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_restore -U postgres -d db_test -n public --clean --if-exists -v \/tmp\/backup_dir\/public.dump<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Import \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03a0\u03af\u03bd\u03b1\u03ba\u03b1 \u03b1\u03c0\u03cc Directory (-F d)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u038c\u03c4\u03b1\u03bd \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1 \u03c4\u03b5\u03c1\u03ac\u03c3\u03c4\u03b9\u03bf \u03bf\u03bb\u03b9\u03ba\u03cc backup \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03bd\u03b1 \u03b1\u03bd\u03b1\u03ba\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bc\u03cc\u03bd\u03bf \u03ad\u03bd\u03b1\u03bd \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 (<code>-t customers<\/code>), \u03ba\u03b1\u03b8\u03b1\u03c1\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf\u03bd \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03cd\u03bc\u03b5\u03bd\u03bf \u03b1\u03bd \u03c5\u03c0\u03ae\u03c1\u03c7\u03b5 \u03c4\u03c1\u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ae:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_restore -U postgres -d db_test -t customers -F d --clean --if-exists -v \/tmp\/backup_dir\/<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Import \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03a0\u03af\u03bd\u03b1\u03ba\u03b1 \u03b1\u03c0\u03cc Custom File (-F c)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0391\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1, \u03b1\u03bd \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c0\u03ac\u03c1\u03b5\u03b9 export \u03bc\u03cc\u03bd\u03bf \u03ad\u03bd\u03b1\u03bd \u03bc\u03b5\u03bc\u03bf\u03bd\u03c9\u03bc\u03ad\u03bd\u03bf \u03c0\u03af\u03bd\u03b1\u03ba\u03b1 \u03c3\u03b5 custom compressed \u03b1\u03c1\u03c7\u03b5\u03af\u03bf (<code>-F c<\/code>), \u03c4\u03bf\u03bd \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf\u03c7\u03b5\u03c5\u03bc\u03ad\u03bd\u03b1 \u03b4\u03b7\u03bb\u03ce\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf format \u03ba\u03b1\u03b9 \u03c6\u03c1\u03bf\u03bd\u03c4\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03bf\u03bd \u03ba\u03b1\u03b8\u03b1\u03c1\u03b9\u03c3\u03bc\u03cc (<code>--clean<\/code>) \u03ce\u03c3\u03c4\u03b5 \u03bd\u03b1 \u03b1\u03c0\u03bf\u03c6\u03cd\u03b3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c5\u03b3\u03ba\u03c1\u03bf\u03cd\u03c3\u03b5\u03b9\u03c2 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">pg_restore -U postgres -d db_test -t customers -F c --clean --if-exists -v \/tmp\/backup_dir\/table_customers.dump<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources:<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.postgresql.org\/docs\/current\/\" data-type=\"link\" data-id=\"https:\/\/www.postgresql.org\/docs\/current\/\">PostgreSQL 18.4 Documentation<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u038c\u03c3\u03bf\u03b9 \u03c0\u03c1\u03bf\u03b5\u03c1\u03c7\u03cc\u03bc\u03b1\u03c3\u03c4\u03b5 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03ba\u03cc\u03c3\u03bc\u03bf \u03c4\u03b7\u03c2 Oracle \u03ba\u03b1\u03b9 \u03c4\u03bf Data Pump (expdp\/impdp), \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03ac\u03c1\u03b8\u03c1\u03bf \u03b8\u03b1 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03b1 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03c4\u03b7\u03c2 PostgreSQL pg_dump \u03ba\u03b1\u03b9 pg_restore. \u03a4\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03b1\u03c5\u03c4\u03ac \u03bc\u03b1\u03c2 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03bd\u03b1 \u03c4\u03c1\u03ad\u03be\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2 \u03bc\u03b5 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 threads, \u03bc\u03b5\u03bc\u03bf\u03bd\u03bf\u03bc\u03ad\u03bd\u03b1 schemas \u03ba\u03b1\u03b9 \u03c0\u03af\u03bd\u03b1\u03ba\u03b5\u03c2 \u03b1\u03c0\u03bf\u03c6\u03b5\u03cd\u03b3\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b1\u03c5\u03c4\u03bf\u03c7\u03c1\u03bf\u03bd\u03b1 \u03c4\u03c5\u03c0\u03b9\u03ba\u03ad\u03c2 \u03c0\u03b1\u03b3\u03af\u03b4\u03b5\u03c2 \u03bf\u03c0\u03c9\u03c2 \u03c4\u03b1 Primary Key violations. \u0391\u03c2 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c0\u03c1\u03b1\u03ba\u03c4\u03b9\u03ba\u03ac [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2376,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,123],"tags":[110,29,124,30],"class_list":["post-6099","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-databases","category-postgresql","tag-bulk-operations","tag-databases","tag-postgresql","tag-rdbms"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u03a0\u03ce\u03c2 \u03ba\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 Bulk Export Import \u03c3\u03c4\u03b7 PostgreSQL (pg_dump) - DataPlatform.gr<\/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:\/\/www.dataplatform.gr\/en\/pos-kanoyme-bulk-export-import-sti-postgresql-pg_dump\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u03a0\u03ce\u03c2 \u03ba\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 Bulk Export Import \u03c3\u03c4\u03b7 PostgreSQL (pg_dump) - DataPlatform.gr\" \/>\n<meta property=\"og:description\" content=\"\u038c\u03c3\u03bf\u03b9 \u03c0\u03c1\u03bf\u03b5\u03c1\u03c7\u03cc\u03bc\u03b1\u03c3\u03c4\u03b5 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03ba\u03cc\u03c3\u03bc\u03bf \u03c4\u03b7\u03c2 Oracle \u03ba\u03b1\u03b9 \u03c4\u03bf Data Pump (expdp\/impdp), \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03ac\u03c1\u03b8\u03c1\u03bf \u03b8\u03b1 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03b1 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03c4\u03b7\u03c2 PostgreSQL pg_dump \u03ba\u03b1\u03b9 pg_restore. \u03a4\u03b1 \u03b5\u03c1\u03b3\u03b1\u03bb\u03b5\u03af\u03b1 \u03b1\u03c5\u03c4\u03ac \u03bc\u03b1\u03c2 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03bd\u03b1 \u03c4\u03c1\u03ad\u03be\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2 \u03bc\u03b5 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 threads, \u03bc\u03b5\u03bc\u03bf\u03bd\u03bf\u03bc\u03ad\u03bd\u03b1 schemas \u03ba\u03b1\u03b9 \u03c0\u03af\u03bd\u03b1\u03ba\u03b5\u03c2 \u03b1\u03c0\u03bf\u03c6\u03b5\u03cd\u03b3\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b1\u03c5\u03c4\u03bf\u03c7\u03c1\u03bf\u03bd\u03b1 \u03c4\u03c5\u03c0\u03b9\u03ba\u03ad\u03c2 \u03c0\u03b1\u03b3\u03af\u03b4\u03b5\u03c2 \u03bf\u03c0\u03c9\u03c2 \u03c4\u03b1 Primary Key violations. \u0391\u03c2 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c0\u03c1\u03b1\u03ba\u03c4\u03b9\u03ba\u03ac [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dataplatform.gr\/en\/pos-kanoyme-bulk-export-import-sti-postgresql-pg_dump\/\" \/>\n<meta property=\"og:site_name\" content=\"DataPlatform.gr\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/dataplatform.gr\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-14T04:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-14T11:15:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2020\/10\/db_postgresql.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Stratos Matzouranis\" 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