NBU异机还原oracle，用户不同问题

今天在执行nbu恢复oracle的问题，发现总是出现问题 恢复脚本是没问题的 RMAN> run { allocate channel c1 type 'sbt_tape'; send 'NB_ORA_CLIENT=mytest1'; restore controlfile from '/cntrl_6255_1_880381344'; release channel c1; }

using target database control file instead of recovery catalog allocated channel: c1 channel c1: SID=59 device type=SBT_TAPE channel c1: Veritas NetBackup for Oracle - Release 7.6 (2013111313)

sent command to channel: c1

Starting restore at 22-MAY-15

channel c1: restoring control file released channel: c1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 05/22/2015 14:45:16 ORA-19870: error while restoring backup piece /cntrl_6255_1_880381344 ORA-19507: failed to retrieve sequential file, handle="/cntrl_6255_1_880381344", parms="" ORA-27029: skgfrtrv: sbtrestore returned error ORA-19511: Error received from media manager layer, error text:    Backup file not found in NetBackup catalog    但通过bplist从nbu备份服务器上查看也是可以看到的，但就是报这个错，经过分析，感觉可能是用户的问题，原来备份时的用户是oracle，而现在的恢复环境是oratest。所以新建新建一个oracle用户来，建好后对oracle用户授好权后，再恢复报如下错误： RMAN> run { allocate channel c1 type 'sbt_tape'; send 'NB_ORA_CLIENT=mytest1'; restore controlfile from '/cntrl_6255_1_880381344'; release channel c1; }

using target database control file instead of recovery catalog allocated channel: c1 channel c1: SID=59 device type=SBT_TAPE channel c1: Veritas NetBackup for Oracle - Release 7.6 (2013111313)

sent command to channel: c1

Starting restore at 25-MAY-15

released channel: c1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 05/25/2015 17:23:18 RMAN-06172: no AUTOBACKUP found or specified handle is not a valid copy or piece

后来经过咨询nbu的工程师，得到了答案！

原因是： 1、ORACLE_HOME的属主，要与原环境相同。也就是说原环境中是oracle用户，那么新环境也必须是oracle 2、在使用oracle_link链接时，必须是使用与原环境相同的用户进行执行 2、恢复时，使用的执行用户，必须与原环境相同的用户。

这些是nbu没有公布的，真坑！