2026-03-12 20:23:15

vg/redolog_remove_extra_member.sql

@@ -0,0 +1,62 @@
+
+/*
+*
+*  Author     : Vishal Gupta
+*  Purpose    : Remove extra online redolog members.
+*  Version    : 
+*  Parameters : None
+*               
+*
+*  Revision History:
+*  ===================
+*  Date       Author        Description
+*  ---------  ------------  -----------------------------------------
+*  17-DEC-15  Vishal Gupta  Created
+*
+*
+*/
+
+set serveroutput on
+BEGIN
+    -- Remove extra redo log member from non-current online redologs
+    FOR i in 
+    (SELECT 'alter database drop logfile member ''' 
+          || max(lf.member) 
+          || '''' sqltext
+      , l.status
+      FROM v$log l
+           JOIN v$logfile lf ON lf.group# = l.group#
+    WHERE l.members = 2
+      and l.status NOT IN ('CURRENT')
+    group by l.group#, l.status
+    ORDER BY l.group#
+    )
+    LOOP
+       dbms_output.put_line(i.sqltext || ';');
+     execute immediate i.sqltext;
+    END LOOP;
+    
+    -- Switch current online redo and remove extra member
+    FOR i in 
+    (SELECT 'alter database drop logfile member ''' 
+          || max(lf.member) 
+          || '''' sqltext
+      , 'alter system archive log instance ''' || i.instance_name || ''' current' sqltext2  
+          , l.status
+      FROM v$log l
+           JOIN v$logfile lf ON lf.group# = l.group#
+       JOIN gv$instance i ON i.inst_id = l.thread#
+    WHERE l.members = 2
+      and l.status = 'CURRENT'
+    group by l.group#, i.instance_name, l.status
+    ORDER BY l.group#, i.instance_name
+    )
+    LOOP
+       dbms_output.put_line(i.sqltext2 || ';');
+     execute immediate i.sqltext2;
+       dbms_output.put_line(i.sqltext || ';');
+     execute immediate i.sqltext;
+    END LOOP;
+END;
+/
+