Archive for 十二月, 2010

十二月 1st, 2010

ORACLE 数据库日志操作查看

2 Comments, 数据库问题解决方案, by 小哥.

事件编号：20101131002

SQL>sqlplus “/as sysdba”

#查询系统使用的是哪一组日志文件
SQL>select * from v$log;

#查询正在使用的组所对应的日志文件
SQL>select * from v$logfile

#查看最近所作的操作
SQL>select * from v$sql

#查看最近所作的操作
SQL>select * from v$sqlarea

#查询历史日志
SQL>select * from v$log_history;

#查询日志的归档模式
SQL>select dbid,name,created,log_mode from v$database;

#强制日志切换
SQL>alter system switch logfile;

十二月 1st, 2010

ORALCE 数据库如何查看并修改当前数据库编码格式的方法

2 Comments, 数据库问题解决方案, by 小哥.

事件编号：20101131001

–查看oracle数据库字符集：
select userenv(‘language’) from dual;

–查询结果：
SIMPLIFIED CHINESE_CHINA.AL32UTF8

–修改oracle数据库字符集：（在SQL Plus中）
sql> conn / as sysdba;
sql> shutdown immediate;

database closed.
database dismounted.
oracle instance shut down.
sql> startup mount;
oracle instance started.

total system global area 135337420 bytes
fixed size 452044 bytes
variable size 109051904 bytes
database buffers 25165824 bytes
redo buffers 667648 bytes
database mounted.

sql> alter system enable restricted session;
system altered.

sql> alter system set job_queue_processes=0;
system altered.

sql> alter system set aq_tm_processes=0;
system altered.

sql> alter database open;
database altered.

sql> alter database character set internal_use JA16SJIS;
sql> shutdown immediate;
sql> startup;