oracle课堂随笔--第十五天

racle管理

体系结构

上 内存     磁盘

SGA:

$ sqlplus / as sysdba

SQL> show sga

SQL> show parameter sga_max_size 显示容量

SQL> select * from V$SGAINFO;  系统内部组建

oem:浏览器中 服务器-->内存指导(https://192.168.0.1:1158/em)

shared pool:缓存    最近sql 语句的执行计划   在众多方案中选择最优)         共享池

SQL> show parameter shared_pool_size            参数自动调整

SQL> select component, current_size /1024/1024 from V$SGA_DYNAMIC_COMPONENTS where component='shared pool';

SQL> select * from v$SGAINFO;

db buffer cache:

SQL> show parameter db_block_size

SQL> show parameter db_cache_size

SQL> select * from v$SGAINFO; sga都在这

SQL> select component, current_size from V$SGA_DYNAMIC_COMPONENTS where component='DEFAULT buffer cache';

redo log buffer:

SQL> show parameter log_buffer

SQL> select * from v$sgainfo;

PGA:

SQL> show parameter pga_aggregate_target

SQL> select * from V$PGASTAT where NAME='total PGA allocated';

后台进程:

SQL> select name from v$bgprocess where paddr<>'00';

SQL> ! ps -ef | grep ora_

SQL> show parameter db_writer_processes

数据文件:

$ ll /u01/app/oracle/oradata/orcl/*.dbf

SQL> select name from v$datafile;

SQL> select name from v$tempfile;

控制文件:

$ find /u01 -name 'control0[12].ctl'

SQL> select name from v$controlfile;

SQL> select TYPE, RECORD_SIZE, RECORDS_TOTAL, RECORDS_USED from v$controlfile_record_section;

重做日志:

$ ll /u01/app/oracle/oradata/orcl/*.log

SQL> select group#, member from v$logfile;

参数文件:

$ ll $ORACLE_HOME/dbs/spfile*.ora

$ strings $ORACLE_HOME/dbs/spfileorcl.ora

SQL> show parameter spfile;

SQL> show parameter

密码文件:

$ ll $ORACLE_HOME/dbs/orapw*

归档日志:

SQL> select name from v$archived_log;

警告日志:

$ find /u01 -name 'alert_*.log

posted on 2017-08-04 18:18  看透ら不说透  阅读(87)  评论(0编辑  收藏  举报