title: RMAN-06172: no AUTOBACKUP found or specified handle is not a valid copy or piece
body: <p>I'm trying to restore an spfile as the first step in a cloning procedure from a Simpana backup of a 12c DB (TEST44) to it's duplicate (TEST15). The Source DB has been successfully backed up using Simpana. Autobackup has been set:</p>
  
  <pre><code>CONFIGURE CONTROLFILE AUTOBACKUP ON;
  CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
  </code></pre>
  
  <p>I can list the backup set that the restore is using:</p>
  
  <pre><code>    BS Key  Type LV Size       Device Type Elapsed Time Completion Time
  ------- ---- -- ---------- ----------- ------------ ---------------
  30      Full    128.50M    SBT_TAPE    00:00:04     18-JUN-18
          `BP Key: 30   Status`: AVAILABLE  Compressed: NO  Tag: TAG20180618T164547
          Handle: c-958109427-20180618-03   Media: V_453862_1340469
    SPFILE Included: Modification time: 18-JUN-18
    SPFILE db_unique_name: TEST44
    Control File Included: Ckp SCN: 975546       Ckp time: 18-JUN-18
  </code></pre>
  
  <p>The target DB is mounted. I need to restore the spfile before I can restore the controlfiles but I'm hitting the following error:</p>
  
  <pre><code>RMAN&gt; 2&gt; 3&gt; 4&gt; 5&gt; 6&gt; 7&gt; 8&gt; 9&gt; 10&gt; 11&gt; 12&gt; 13&gt; 14&gt; 15&gt; 16&gt; 
  executing command: SET DBID
  database name is "TEST44" and DBID is 958109427
  
  allocated channel: a1
  channel a1: SID=254 device type=SBT_TAPE
  channel a1: CommVault Systems for Oracle: Version 10.0.0(BUILD116)
  
  allocated channel: a2
  channel a2: SID=317 device type=SBT_TAPE
  channel a2: CommVault Systems for Oracle: Version 10.0.0(BUILD116)
  
  allocated channel: a3
  channel a3: SID=380 device type=SBT_TAPE
  channel a3: CommVault Systems for Oracle: Version 10.0.0(BUILD116)
  
  allocated channel: a4
  channel a4: SID=442 device type=SBT_TAPE
  channel a4: CommVault Systems for Oracle: Version 10.0.0(BUILD116)
  
  Starting restore at 18-JUN-18
  
  channel a1: no AUTOBACKUP in 7 days found
  channel a2: no AUTOBACKUP in 7 days found
  channel a3: no AUTOBACKUP in 7 days found
  channel a4: no AUTOBACKUP in 7 days found
  released channel: a1
  released channel: a2
  released channel: a3
  released channel: a4
  RMAN-00571: ===========================================================
  RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
  RMAN-00571: ===========================================================
  RMAN-03002: failure of restore command at 06/18/2018 17:48:39
  RMAN-06172: no AUTOBACKUP found or specified handle is not a valid copy or piece
  
  RMAN&gt; 
  
  Recovery Manager complete.
  
  
  Running: restore spfile to '/u01/app/oracle/product/12.1.0.2/dbs/spfileTEST15.ora' from 'c-958109427-20180618-03
  </code></pre>
  
  <p>Any pointers on what I should be looking at in order to resolve this? Many thanks.</p>