{"id":4167,"date":"2025-06-08T02:50:00","date_gmt":"2025-06-08T02:50:00","guid":{"rendered":"https:\/\/w3buddy.com\/?post_type=cposts&#038;p=4167"},"modified":"2025-06-09T15:43:42","modified_gmt":"2025-06-09T15:43:42","slug":"disable-oracle-scheduler-jobs-job-queue-memory-spfile-rac-non-sys-jobs","status":"publish","type":"cposts","link":"https:\/\/w3buddy.com\/blog\/notes\/oracle-dba-d2d-tasks\/disable-oracle-scheduler-jobs-job-queue-memory-spfile-rac-non-sys-jobs\/","title":{"rendered":"Disable Oracle Scheduler Jobs: Job Queue, Memory, SPFILE, RAC, Non-SYS Jobs"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Oracle Scheduler automates job execution. Sometimes, you need to disable jobs temporarily or permanently \u2014 for maintenance, troubleshooting, or performance reasons. This guide covers disabling job queue processes via MEMORY, SPFILE, RAC, and selectively disabling non-SYS jobs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Disable Job Queue Processes in MEMORY (Temporary)<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code><code>ALTER SYSTEM SET job_queue_processes = 0 SCOPE = MEMORY;<\/code><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Effective immediately on current instance only<\/li>\n\n\n\n<li>Resets on instance restart<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Disable Job Queue Processes in SPFILE + MEMORY (Persistent)<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code><code>ALTER SYSTEM SET job_queue_processes = 0 SCOPE = BOTH;<\/code><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Changes saved to SPFILE<\/li>\n\n\n\n<li>Survives instance restarts<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Disable Job Queue Processes in RAC (All Instances)<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code><code>ALTER SYSTEM SET job_queue_processes = 0 SCOPE = BOTH SID='*';<\/code><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Applies change to all RAC instances<\/li>\n\n\n\n<li>Ensures cluster-wide consistency<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. Disable Non-SYS Scheduler Jobs Only<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Generate disable commands for all non-SYS jobs:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><code>SET LINESIZE 123 PAGESIZE 234\nSET HEADING OFF\nSPOOL job_disable.sql\nSELECT 'EXECUTE DBMS_SCHEDULER.DISABLE(''' || owner || '.' || job_name || ''');'\nFROM dba_scheduler_jobs\nWHERE owner != 'SYS';\nSPOOL OFF;<\/code><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Runs query to create a script disabling all non-SYS jobs<\/li>\n\n\n\n<li>Execute generated <code>job_disable.sql<\/code> script to disable jobs<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Notes<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>job_queue_processes = 0<\/code> stops <strong>all<\/strong> scheduler jobs<\/li>\n\n\n\n<li>Use MEMORY scope for <strong>temporary<\/strong> changes<\/li>\n\n\n\n<li>Use SPFILE scope for <strong>persistent<\/strong> changes<\/li>\n\n\n\n<li>RAC requires SID=&#8217;*&#8217; to target all nodes<\/li>\n\n\n\n<li>Disabling non-SYS jobs avoids impacting Oracle internal jobs<\/li>\n\n\n\n<li>Always check job status with: <code>SELECT owner, job_name, enabled FROM dba_scheduler_jobs ORDER BY owner;<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Summary<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Temporary disable:<\/strong> MEMORY scope<\/li>\n\n\n\n<li><strong>Permanent disable:<\/strong> SPFILE (or BOTH) scope<\/li>\n\n\n\n<li><strong>RAC environment:<\/strong> SID=&#8217;*&#8217; to apply cluster-wide<\/li>\n\n\n\n<li><strong>Selective disable:<\/strong> Generate disable commands for non-SYS jobs<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Oracle Scheduler automates job execution. Sometimes, you need to disable jobs temporarily or permanently \u2014 for maintenance, troubleshooting, or performance reasons. This guide covers disabling job queue processes via MEMORY, SPFILE, RAC, and selectively disabling non-SYS jobs. 1. Disable Job Queue Processes in MEMORY (Temporary) 2. Disable Job Queue Processes in SPFILE + MEMORY (Persistent) [&hellip;]<\/p>\n","protected":false},"template":"","meta":{"googlesitekit_rrm_CAowu461DA:productID":""},"categories":[952,984],"class_list":["post-4167","cposts","type-cposts","status-publish","hentry","category-notes","category-oracle-dba-d2d-tasks"],"_links":{"self":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/cposts\/4167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/cposts"}],"about":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/types\/cposts"}],"wp:attachment":[{"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/media?parent=4167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w3buddy.com\/blog\/wp-json\/wp\/v2\/categories?post=4167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}