{"id":1015,"date":"2023-08-10T16:54:59","date_gmt":"2023-08-10T19:54:59","guid":{"rendered":"https:\/\/martafagundez.com\/codevolution\/?p=1015"},"modified":"2024-11-20T01:47:03","modified_gmt":"2024-11-20T04:47:03","slug":"problemas-y-soluciones-al-intentar-abrir-una-conexion-en-sql-developer","status":"publish","type":"post","link":"https:\/\/martafagundez.com\/codevolution\/problemas-y-soluciones-al-intentar-abrir-una-conexion-en-sql-developer\/","title":{"rendered":"Problemas (y soluciones) al intentar abrir una conexi\u00f3n en SQL Developer"},"content":{"rendered":"\n<p>Las conexiones con las bases de datos suelen ser fuente de algunos problemas cuando tenemos poca experiencia (y muchas horas de b\u00fasqueda desesperada en internet \ud83d\ude2c). <\/p>\n\n\n\n<p>Algunas veces probamos tantas cosas en el intento de solucionar un error, que una vez que logramos establecer la conexi\u00f3n sin problemas, no nos queda claro en qu\u00e9 radic\u00f3 la soluci\u00f3n exactamente.<\/p>\n\n\n\n<p>Pero una vez que entiendes el origen del error, puede que las soluciones sean muy sencillas.<\/p>\n\n\n\n<p>En este art\u00edculo ir\u00e9 compartiendo los errores que he experimentado y las soluciones que he encontrado.<\/p>\n\n\n\n<p>Todas estas soluciones parten del supuesto que tienes instalada la base de datos <strong>Oracle Database Express Edition<\/strong> y que est\u00e1s intentando abrir una conexi\u00f3n a dicha base de datos mediante la aplicaci\u00f3n <strong>SQL Developer<\/strong>.<\/p>\n\n\n\n<p><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"problema-1-oracleservicexe-esta-detenido\">Problema 1: OracleServiceXE est\u00e1 detenido<\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"mensaje-de-error\">Mensaje de error:<\/h3>\n\n\n<blockquote class=\"wp-block-quote is-style-plain is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Se ha producido un error al realizar la operaci\u00f3n solicitada:<\/p>\n\n\n\n<p>Listener refused the connection with the following error:<\/p>\n\n\n\n<p>ORA-12518, TNS:listener could not hand off client connection<\/p>\n\n\n\n<p>(CONNECTION_ID=rkeYeGZ0Q3q1rutL1bDR\/A==)<\/p>\n\n\n\n<p>C\u00f3digo de proveedor 12518<\/p>\n<\/blockquote>\n\n\n<h3 class=\"wp-block-heading\" id=\"solucion\">Soluci\u00f3n<\/h3>\n\n\n<p>En mi caso este mensaje de error se presenta cuando el <strong>servicio OracleServiceXE est\u00e1 detenido<\/strong>. As\u00ed que lo primero que hay que hacer es chequear su estatus:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Abrir el <strong>Administrador de Tareas<\/strong> (Ctrl + Alt + Supr)<\/li>\n\n\n\n<li>En la <strong>pesta\u00f1a Servicios<\/strong>, buscar el servicio llamado <strong>OracleServiceXE<\/strong><\/li>\n\n\n\n<li>Chequear si el <strong>estado <\/strong>de ese servicio es \u00ab<strong>En ejecuci\u00f3n<\/strong>\u00ab<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/OracleServiceXE_detenido.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"592\" data-id=\"863\" src=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/OracleServiceXE_detenido.jpg\" loading=\"lazy\" alt=\"\" class=\"wp-image-863\" srcset=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/OracleServiceXE_detenido.jpg 771w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/OracleServiceXE_detenido-300x230.jpg 300w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/OracleServiceXE_detenido-768x590.jpg 768w\" sizes=\"auto, (max-width: 771px) 100vw, 771px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Si el servicio est\u00e1 detenido: <strong>click derecho<\/strong> sobre el nombre del servicio \/ opci\u00f3n<strong> Iniciar<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>El servicio puede demorar algunos segundos en iniciarse completamente. <\/p>\n\n\n\n<p><span style=\"text-decoration: underline;\"><strong>S\u00f3lo cuando verifiques que el estado del servicio es \u00abEn ejecuci\u00f3n\u00bb<\/strong><\/span>, vuelve a intentar conectarte a la base de datos mediante SQL Developer.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"problema-2-listener-detenido\">Problema 2: listener detenido<\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"mensaje-de-error\">Mensaje de error:<\/h3>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Se ha producido un error al realizar la operaci\u00f3n solicitada:<\/p>\n\n\n\n<p>Error de E\/S: The Network Adapter could not establish the connection (CONNECTION_ID=ccN4yd\/PQyagHV74VcsZoA==)<\/p>\n\n\n\n<p>C\u00f3digo de proveedor 17002<\/p>\n<\/blockquote>\n\n\n<h3 class=\"wp-block-heading\" id=\"solucion\">Soluci\u00f3n:<\/h3>\n\n\n<p>Este error se me ha presentado cuando el listener de Oracle est\u00e1 detenido.<\/p>\n\n\n\n<p>Lo primero que hay que hacer es chequear el estatus del listener:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En la <strong>barra de b\u00fasqueda<\/strong> de Windows escribir <strong>cmd<\/strong>. <\/li>\n\n\n\n<li>Click derecho en <strong>S\u00edmbolo del sistema<\/strong> \/ <strong>Ejecutar como administrador<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"860\" height=\"681\" data-id=\"862\" src=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_ejecutar_como_administrador.jpg\" loading=\"lazy\" alt=\"\" class=\"wp-image-862\" srcset=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_ejecutar_como_administrador.jpg 860w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_ejecutar_como_administrador-300x238.jpg 300w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_ejecutar_como_administrador-768x608.jpg 768w\" sizes=\"auto, (max-width: 860px) 100vw, 860px\" \/><\/figure>\n<\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En la consola escribir <code>lsnrctl status<\/code> y dar <strong>enter<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_status-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"682\" height=\"506\" data-id=\"860\" src=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_status-1.jpg\" loading=\"lazy\" alt=\"\" class=\"wp-image-860\" srcset=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_status-1.jpg 682w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_status-1-300x223.jpg 300w\" sizes=\"auto, (max-width: 682px) 100vw, 682px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Si confirmamos que el listener est\u00e1 detenido (mensaje \u00abNo hay ning\u00fan listener\u00bb) debemos activarlo nuevamente:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En la consola escribir <code>lsnrctl<\/code> start y dar <strong>enter<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_start.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"854\" height=\"642\" data-id=\"859\" src=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_start.jpg\" loading=\"lazy\" alt=\"\" class=\"wp-image-859\" srcset=\"https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_start.jpg 854w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_start-300x226.jpg 300w, https:\/\/martafagundez.com\/codevolution\/wp-content\/uploads\/2023\/08\/cmd_listener_start-768x577.jpg 768w\" sizes=\"auto, (max-width: 854px) 100vw, 854px\" \/><\/a><\/figure>\n<\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Importante: <\/strong><br><strong>Una vez iniciado el listener,<\/strong> <span style=\"text-decoration: underline;\"><strong>si ten\u00edas abierta la aplicaci\u00f3n SQL Developer debes cerrarla y volver a abrirla antes de volver a intentar abrir la conexi\u00f3n<\/strong><\/span> (si no obtendr\u00e1s otro mensaje de error).<\/p>\n\n\n\n<p><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"otros-errores-al-intentar-abrir-una-conexion-desde-sql-developer\">Otros errores al intentar abrir una conexi\u00f3n desde SQL Developer<\/h2>\n\n\n<p>Si encuentro otros errores ir\u00e9 compartiendo en este art\u00edculo las soluciones que vaya descubriendo.<\/p>\n\n\n\n<p>Y t\u00fa, \u00bfhas experimentado alg\u00fan otro error al intentar abrir una conexi\u00f3n con la base de datos desde SQL Developer?, \u00bfqu\u00e9 soluci\u00f3n has encontrado para ese error?<\/p>\n\n\n\n<p>Te invito a compartir tu conocimiento en los comentarios. \ud83d\ude09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Las conexiones con las bases de datos suelen ser fuente de algunos problemas cuando tenemos poca experiencia (y muchas horas de b\u00fasqueda desesperada en internet&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[39,27,32,28],"tags":[35],"class_list":["post-1015","post","type-post","status-publish","format-standard","hentry","category-backend","category-bases-de-datos","category-herramientas","category-oracle","tag-back-end"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Problemas (y soluciones) al intentar abrir una conexi\u00f3n en SQL Developer - CODEvolution<\/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:\/\/martafagundez.com\/codevolution\/problemas-y-soluciones-al-intentar-abrir-una-conexion-en-sql-developer\/\" \/>\n<meta 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