{"id":5443,"date":"2015-09-03T08:50:11","date_gmt":"2015-09-03T06:50:11","guid":{"rendered":"https:\/\/www.dbi-services.com\/blog\/oracle-12c-duplicate-in-cluster-fails-with-ora-65500\/"},"modified":"2015-09-03T08:50:11","modified_gmt":"2015-09-03T06:50:11","slug":"oracle-12c-duplicate-in-cluster-fails-with-ora-65500","status":"publish","type":"post","link":"https:\/\/www.dbi-services.com\/blog\/oracle-12c-duplicate-in-cluster-fails-with-ora-65500\/","title":{"rendered":"Oracle 12c duplicate in cluster fails with ORA-65500"},"content":{"rendered":"<p>I had to perform a duplicate database between 2 ODAs and was always facing an ORA-65500 at the begin of the RMAN operation. Looking a bit deeper in the log outputs pointed me out that it was due to some changes in the way RMAN makes the duplicate in 12c and cluster resources management.<\/p>\n<p><!--more--><\/p>\n<p>Basically up to 12c when RMAN was doing a duplicate, it was changing the auxiliary spfile to set the DB_NAME at the value of the target database. This is required as after restoring a copy of the control file, RMAN needs to MOUNT the database. If the DB_NAME does not match between the spfile and the control files it won&#8217;t be possible to MOUNT the database. At the end of the duplicate RMAN changes the DB_NAME back in the spfile and uses NID principle to change it in the control files.<\/p>\n<p>In version 12c now RMAN doesn&#8217;t change only the DB_NAME, but also the DB_UNIQUE_NAME and here is the trick!<\/p>\n<p>While working in a cluster environment (Oracle Restart, RAC One Node, RAC, ODA&#8230;) the database is defined as a cluster resource based on its DB_UNIQUE_NAME<\/p>\n<pre class=\"brush: bash; gutter: true; first-line: 1\">[root@dbioda1 bin]# .\/crsctl stat res ora.dbtest_site1.db -t\n--------------------------------------------------------------------------------\nName           Target  State        Server                   State details\n--------------------------------------------------------------------------------\nCluster Resources\n--------------------------------------------------------------------------------\nora.dbtest_site1.db\n      1        ONLINE  ONLINE       dbioda1              Open,STABLE\n--------------------------------------------------------------------------------<\/pre>\n<p>&nbsp;<\/p>\n<p>At the beginning of the duplicate process RMAN runs following SQL:<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1\">sql statement: alter system set  db_name =  ''DBPROD'' comment= ''Modified by RMAN duplicate'' scope=spfile\n\nsql statement: alter system set  db_unique_name =  ''DBTEST_SITE1'' comment= ''Modified by RMAN duplicate'' scope=spfile<\/pre>\n<p>&nbsp;<\/p>\n<p>Unfortunately changing the DB_UNIQUE_NAME is NOT allowed on a database defined as a cluster resource and that&#8217;s why we get the following error:<\/p>\n<pre class=\"brush: bash; gutter: false; first-line: 1\">RMAN-00571: ===========================================================\nRMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============\nRMAN-00571: ===========================================================\nRMAN-03002: failure of Duplicate Db command at 09\/03\/2015 10:11:00\nRMAN-04014: startup failed: ORA-00304: requested INSTANCE_NUMBER is busy\nRMAN-03015: error occurred in stored script Memory Script\nRMAN-03009: failure of sql command on clone_default channel at 09\/03\/2015 10:10:36\nRMAN-11003: failure during parse\/execution of SQL statement: alter system set  db_unique_name =  'DBTEST_SITE1' comment= 'Modified by RMAN duplicate' scope=spfile\nORA-32017: failure in updating SPFILE\nORA-65500: could not modify DB_UNIQUE_NAME, resource exists<\/pre>\n<p>&nbsp;<\/p>\n<p>The most frustrating is that after this failure, you won&#8217;t be able to start anymore your auxiliary database using your spfile. The only solution is to generate it again from a pfile<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1\">Connected to an idle instance.\n\nSQL&gt; startup nomount\nORA-00304: requested INSTANCE_NUMBER is busy\n\nSQL&gt; create spfile='\/u02\/app\/oracle\/oradata\/datastore\/.ACFS\/snaps\/DBTEST\/DBTEST_SITE1\/spfileDBTEST.ora' from pfile='\/home\/oracle\/initDBTEST.ora';\n\nFile created.\n\nSQL&gt; startup nomount\nORACLE instance started.\n\nTotal System Global Area 1.7180E+10 bytes\nFixed Size\t\t    3731384 bytes\nVariable Size\t\t 2550136904 bytes\nDatabase Buffers\t 1.4563E+10 bytes\nRedo Buffers\t\t   63377408 bytes<\/pre>\n<p>&nbsp;<\/p>\n<p>Indeed you can even validate this behaviour after setting your database in NOMOUNT and trying manually to change the DB_UNIQUE_NAME.<\/p>\n<p>Therefore I tried some workarounds:<\/p>\n<ol>\n<li>Stopping the database using srvctl before setting it in NOMOUNT and changing the DB_UNIQUE_NAME<\/li>\n<li>Disabling the database in the cluster before setting it in NOMOUNT and changing the DB_UNIQUE_NAME<\/li>\n<\/ol>\n<p>Of course the solution 1 doesn&#8217;t work as after starting the database in NOMOUNT, cluster resource is up again<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1\">oracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl status database -db DBTEST_SITE1\nInstance DBTEST is running on node dbioda1\noracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl stop database -db DBTEST_SITE1\noracle@dbioda1:\/home\/oracle\/ [DBTEST] sqh\nSQL*Plus: Release 12.1.0.2.0 Production on Thu Sep 3 10:25:46 2015\n\nCopyright (c) 1982, 2014, Oracle.  All rights reserved.\nConnected to an idle instance.\n\nSQL&gt; startup nomount\nORACLE instance started.\n\nTotal System Global Area 1.7180E+10 bytes\n...\n\nSQL&gt; alter system set db_unique_name='TOTO' scope=spfile;\nalter system set db_unique_name='TOTO' scope=spfile\n*\nERROR at line 1:\nORA-32017: failure in updating SPFILE\n<strong>ORA-65500: could not modify DB_UNIQUE_NAME, resource exists<\/strong>\n\nSQL&gt; exit\n\noracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl status database -db DBTEST_SITE1\nInstance DBTEST is running on node dbioda1<\/pre>\n<p>&nbsp;<\/p>\n<p>I was a bit more confident in the workaround 2 by disabling the resource in the cluster before doing the changes. Unfortunately we still face the same issue:<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1\">oracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl status database -db DBTEST_SITE1\nInstance DBTEST is running on node dbioda1\noracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl stop database -db DBTEST_SITE1\noracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl disable database -db DBTEST_SITE1\noracle@dbioda1:\/home\/oracle\/ [DBTEST] sqh\nSQL*Plus: Release 12.1.0.2.0 Production on Thu Sep 3 10:32:50 2015\nCopyright (c) 1982, 2014, Oracle.  All rights reserved.\n\nConnected to an idle instance.\n\nSQL&gt; startup nomount\nORACLE instance started.\n\nTotal System Global Area 1.7180E+10 bytes\n...\nSQL&gt; alter system set db_unique_name='TOTO' scope=spfile;\nalter system set db_unique_name='TOTO' scope=spfile\n*\nERROR at line 1:\nORA-32017: failure in updating SPFILE\n<strong>ORA-65500: could not modify DB_UNIQUE_NAME, resource exists<\/strong>\n\nSQL&gt; exit\n\noracle@dbioda1:\/home\/oracle\/ [DBTEST] srvctl status database -db DBTEST_SITE1\n<strong>Instance DBTEST is not running on node dbioda1<\/strong><\/pre>\n<p>As we can see\u00a0 after setting the database in NOMOUNT, the cluster resource remains stopped as it is disabled. But even so we are not allowed to change the DB_UNIQUE_NAME<\/p>\n<p>Thefore the only solution I could found so far is first to remove the resource from the cluster, run the duplicate and then add the resource back in the cluster with a command like:<\/p>\n<pre class=\"brush: bash; gutter: true; first-line: 1\">srvctl add database -db DBTEST_SITE1 -oraclehome $ORACLE_HOME -dbtype SINGLE -role PRIMARY -spfile \/u02\/app\/oracle\/oradata\/datastore\/.ACFS\/snaps\/DBTEST\/DBTEST_SITE1\/spfileDBTEST.ora -pwfile \/u01\/app\/oracle\/product\/12.1.0.2\/dbhome_1\/dbs\/orapwDBTEST -dbname DBTEST -startoption mount -stopoption immediate -instance DBTEST -node dbioda1 -acfspath \"\/u01\/app\/oracle\/oradata\/datastore,\/u02\/app\/oracle\/oradata\/datastore,\/u01\/app\/oracle\/fast_recovery_area\/datastore\"<\/pre>\n<p>&nbsp;<\/p>\n<p>As a conclusion, we can say the following:<\/p>\n<ul>\n<li>\u00a0Oracle 11g database duplicate in cluster or ODA environments works straight forward<\/li>\n<li>Oracle 12c database duplicate in cluster or ODA environmentsrequries first to remove the database resource from the cluster and to add it back afterwards.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Hope it helps! \ud83d\ude00<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I had to perform a duplicate database between 2 ODAs and was always facing an ORA-65500 at the begin of the RMAN operation. Looking a bit deeper in the log outputs pointed me out that it was due to some changes in the way RMAN makes the duplicate in 12c and cluster resources management.<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[229,198],"tags":[38,280,23,311,258,209,270],"type_dbi":[],"class_list":["post-5443","post","type-post","status-publish","format-standard","hentry","category-database-administration-monitoring","category-database-management","tag-cluster","tag-database","tag-dba","tag-duplicate","tag-grid","tag-oracle-12c","tag-rman"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Oracle 12c duplicate in cluster fails with ORA-65500 - dbi Blog<\/title>\n<meta name=\"description\" content=\"Blog about Oracle 12c duplicate issue in cluster and ODA environments while facing ORA-65500 error. 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