本人已经尝试,的确可以成功。
更改sga_max_size的时候不小心少加了单位'M',结果遇到了ORA-00823导致数据库起不来。
1.根据pfile创建spfiel后,修改pfile中的sga_max_size参数
2.用pfile启动数据库,测试正常。
3.根据pfiel创建spfile
4.用spfile启动数据库。
SQL>ALTER SYSTEM SET sga_max_size = 4096 SCOPE=SPFILE; -- 少写了一个M,害得数据库起不来
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount
ORA-00823: Specified value of sga_target greater than sga_max_size
SQL> CREATE PFILE='/opt/ora11g/product/11.2.3/db_1/dbs/pfile01.ora' FROM SPFILE;
File created.
SQL> !
[oracle@oradb01 emd]$ vi /opt/ora11g/product/11.2.3/db_1/dbs/pfile01.ora
*.sga_max_size=4096 改为
*.sga_max_size=4096M
SQL> startup PFILE='/opt/ora11g/product/11.2.3/db_1/dbs/pfile01.ora'
ORACLE instance started.
Total System Global Area 4275781632 bytes
Fixed Size 2266024 bytes
Variable Size 1681919064 bytes
Database Buffers 2583691264 bytes
Redo Buffers 7905280 bytes
Database mounted.
Database opened.
SQL> !
[oracle@oradb01 emd]$ cd /opt/ora11g/product/11.2.3/db_1/dbs/
[oracle@oradb01 dbs]$ cp spfileorcl.ora spfileorcl.ora_bak01
[oracle@oradb01 dbs]$ exit
exit
SQL> CREATE SPFILE='/opt/ora11g/product/11.2.3/db_1/dbs/spfileorcl.ora' FROM PFILE='/opt/ora11g/product/11.2.3/db_1/dbs/pfile01.ora';
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 4275781632 bytes
Fixed Size 2235208 bytes
Variable Size 1677722808 bytes
Database Buffers 2583691264 bytes
Redo Buffers 12132352 bytes
Database mounted.
Database opened.