<p>Normally NTP slews the time if it&#8217;s off by less than 128ms, and steps the time if it&#8217;s over that.  This can cause some serious problems with Oracle (especially 9i+).  The -x option in xntpd forces all time changes to be slewed instead of stepped.  You&#8217;ll want to run ntpdate if your time isn&#8217;t pretty close to being accurate already then make these changes:</p>
<pre><code>stopsrc -s xntpd
chssys -s xntpd -a "-x"
startsrc -s xntpd</code></pre>
{"id":90,"date":"2009-06-18T14:34:27","date_gmt":"2009-06-18T18:34:27","guid":{"rendered":"http:\/\/patrickv.info\/wordpress\/?p=90"},"modified":"2009-06-18T14:34:27","modified_gmt":"2009-06-18T18:34:27","slug":"disabling-ntp-stepping","status":"publish","type":"post","link":"https:\/\/rootuser.ninja\/index.php\/2009\/06\/18\/disabling-ntp-stepping\/","title":{"rendered":"Disabling NTP stepping"},"content":{"rendered":"<p>Normally NTP slews the time if it&#8217;s off by less than 128ms, and steps the time if it&#8217;s over that.  This can cause some serious problems with Oracle (especially 9i+).  The -x option in xntpd forces all time changes to be slewed instead of stepped.  You&#8217;ll want to run ntpdate if your time isn&#8217;t pretty close to being accurate already then make these changes:<\/p>\n<pre><code>stopsrc -s xntpd\nchssys -s xntpd -a \"-x\"\nstartsrc -s xntpd<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":null,"protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,1],"tags":[],"class_list":["post-90","post","type-post","status-publish","format-standard","hentry","category-aix-notes","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/posts\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/comments?post=90"}],"version-history":[{"count":0,"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/posts\/90\/revisions"}],"wp:attachment":[{"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/media?parent=90"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/categories?post=90"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rootuser.ninja\/index.php\/wp-json\/wp\/v2\/tags?post=90"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}