{"id":1003,"date":"2017-12-21T14:12:14","date_gmt":"2017-12-21T14:12:14","guid":{"rendered":"http:\/\/www.dbafox.com\/?p=1003"},"modified":"2017-12-21T14:12:14","modified_gmt":"2017-12-21T14:12:14","slug":"linux-close-file-descriptors-without-killing-process","status":"publish","type":"post","link":"https:\/\/dbafox.com\/?p=1003","title":{"rendered":"Linux &#8211; close file descriptors without killing process"},"content":{"rendered":"\n<pre class=\"toolbar-overlay:false lang:sh decode:true \" title=\"Close file descriptors without killing process\" >-- get list of file descriptors\r\n\r\n# lsof \/dev\/mapper\/XYZ_*\r\n\r\n-- example output\r\noracle    31814 oracle  256u   BLK  253,7      0t0 20968 \/dev\/mapper\/..\/dm-7\r\n\r\n-- above, fd 256 is open for update (could also be w (write))\r\n\r\n-- attach to process with gdb debugger\r\n# gdb -p 31814\r\n\r\n-- close file descriptor(s)\r\ngdb&gt; p close(256)\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8212; get list of file descriptors # lsof \/dev\/mapper\/XYZ_* &#8212; example output oracle 31814 oracle 256u BLK 253,7 0t0 20968 \/dev\/mapper\/..\/dm-7 &#8212; above, fd 256 is open for update (could also be w (write)) &#8212; attach to process with gdb debugger # gdb -p 31814 &#8212; close file descriptor(s) gdb&gt; p close(256)<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[19,49,43],"tags":[],"class_list":["post-1003","post","type-post","status-publish","format-standard","hentry","category-linux","category-oracle-asm","category-oracle-rac"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Linux - close file descriptors without killing process - dbafox<\/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:\/\/dbafox.com\/?p=1003\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux - close file descriptors without killing process - dbafox\" \/>\n<meta property=\"og:description\" content=\"-- get list of file descriptors # lsof \/dev\/mapper\/XYZ_* -- example output oracle 31814 oracle 256u BLK 253,7 0t0 20968 \/dev\/mapper\/..\/dm-7 -- above, fd 256 is open for update (could also be w (write)) -- attach to process with gdb debugger # gdb -p 31814 -- close file descriptor(s) gdb&gt; 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