在非standalone環境中,asm執行個體啟動時，asm 的spfile的搜尋順序
參考自：
ASM spfile in a disk group (文檔 ID 1668455.1)
1.The location of the initialization parameter file specified in the Grid Plug and Play (GPnP) profile.
2.If the location has not been set in the GPnP profile, then the search order changes to:
SPFILE in the Oracle ASM instance home (e.g. $ORACLE_HOME/dbs/spfile+ASM.ora)
PFILE in the Oracle ASM instance home
大家可能有疑問，你為啥強調是在非standalone環境中？因為在standalone環境中，asm的spfile的位置是存儲于OLR中的,詳見：
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