Oracle spfile在线修改时损坏的经验分享
前些天,刚接触Oracle,知道数据库一定要运行在归档模式下: 好手多把它改为归档模式了:先查询 SQLgt; select name,log_mode f
前些天,刚接触Oracle,知道数据库一定要运行在归档模式下:
好手多把它改为归档模式了:先查询
SQL> select name,log_mode from v$database;
NAME LOG_MODE
--------- ------------
IPTVBMS ARCHIVELOG
SQL> archive log list
Database log mode Archive Mode--表示已经改为归档了
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 7517
Next log sequence to archive 7523
Current log sequence 7523
1. SQL> alter system set log_archive_dest_1=’location=/oracle/oracle10g/log/archive_log’;
该语句含义是确定归档日志的路径,实际上Oracle 10g可以生成多份一样的日志,,保存多个位置,以防不测
例如再添加一个日志位置可使用以下语句
SQL>alter system set log_archive_dest_2=’location=/oracle/oracle10g/log2/archive_log’;
2.关闭数据库
SQL> shutdown immediate
3.启动数据mount状态:
SQL> startup mount;
4、修改数据库为归档模式:
SQL> alter database archivelog;
5、打开数据库,查询:
SQL> alter database open;
有一天学到参数文件怎么玩,手多也就备份了
SQL> create pfile='/opt/oracle//app/oracle/product/11.1/db/dbs/orabak/initiptvbms.ora' from spfile;
今天改SGA_TARGET SGA_MAX_SIZE时搞错单,没有加M等单位,启动时报错了
SQL> shutdown immediate
一致性关闭时,报错如下
ORA-00851:SGA_MAX_SIZE 1577058304 cannot be set to more than MEMORY_TARGET
按网上的方法解决不了?
为了使数据库启动则使用pfile启动:
Sql代码
1.SQL> startup pfile=/opt/oracle/app/oracle/admin/iptvbms/pfile/init.ora.4272011104615
SQL> startup pfile='/opt/oracle/app/oracle/admin/iptvbms/pfile/init.ora.4272011104615' 通过pfile创建spfile:
Sql代码
1.create spfile='/opt/oracle/app/oracle/product/11.1/db/dbs/spfileiptvbms.ora' from pfile='/opt/oracle/app/oracle/admin/iptvbms/pfile/init.ora.4272011104615';

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