以pfile或者spfile启动时showparameterpfile的不同结果
普通启动:
SQL> show parameter pfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string /u01/app/oracle/product/11.2.0
/dbhome_1/dbs/spfilesingle1.or a
以pfile启动
SQL> startup nomount pfile=/home/oracle/pfile.ora
ORACLE instance started.
Total System Global Area 413372416 bytes
Fixed Size 2253784 bytes
Variable Size 314575912 bytes
Database Buffers 92274688 bytes
Redo Buffers 4268032 bytes
SQL> alter database mount;
Database altered.
SQL> alter database open;
Database altered.
SQL> show parameter pfile;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string
SQL>
that's the difference.
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