删除归档出现ORA-15028错误

在10.2.0.4 RAC环境中使用RMAN删除归档报错ORA-15028。
错误信息如下:

RMAN> DELETE archivelog ALL completed BEFORE 'sysdate-3';
Do you really want TO DELETE the above objects (enter YES OR NO)? YES
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure OF DELETE command ON ORA_DISK_1 channel at 07/10/2012 07:24:27
ORA-15028: ASM file '+DATA/archive/orcl1/1_78034_751396292.dbf' NOT dropped; currently being accessed

Oracle的MOS上对应的具体描述为:Unable to Delete an ASM File From RMAN and at OS Level ( ORA-15028 ) [ID 1472178.1],根据文档的描述,导致这个问题的原因是部署了复制进程,而复制进程挂起,导致了文件无法删除。解决方法是停止并重启复制软件来释放文件的锁。
客户的环境中确实部署了DSG复制工具,不过客户当时为了解决问题,将整个数据库进行了重启,问题同样解决。不过这并不能说明问题就一定处在数据库实例上,因为一旦数据库重启,DSG复制对应的进程同样被释放,如果是复制工具HANG死导致的问题,那么数据库重启变相达到了复制软件进程重启的目的,所以问题同样的解决。

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