ORACLE體系結構
體系結構
SGA:
$ sqlplus / as sysdba
SQL> show sga
SQL> show parameter sga_max_size 顯示sga容量
SQL> select * from V$SGAINFO;
oem:瀏覽器中 服務器-->內存指導(https://192.168.0.1:1158/em)
shared pool:
SQL> show parameter shared_pool_size 參數
SQL> select component, current_size from V$SGA_DYNAMIC_COMPONENTS where component=‘shared pool‘;共享池詳細信息
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;
SQL> select component, current_size from V$SGA_DYNAMIC_COMPONENTS where component=‘DEFAULT buffer cache‘; 動態性能視圖
redo log buffer:
SQL> show parameter log_buffer
SQL> select * from v$sgainfo;
PGA:
SQL> show parameter pga_aggregate_target
SQL> select * from V$PGASTAT where NAME=‘total PGA allocated‘;
後臺進程:
SQL> select name from v$bgprocess where paddr<>‘00‘;
SQL> ! ps -ef | grep ora_
SQL> show parameter db_writer_processes
數據文件:
$ 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;
重做日誌:
$ ll /u01/app/oracle/oradata/orcl/*.log
SQL> select group#, member from v$logfile;
實例參數文件:
$ ll $ORACLE_HOME/dbs/spfile*.ora
$ strings $ORACLE_HOME/dbs/spfileorcl.ora 字符查看
SQL> show parameter spfile;
SQL> show parameter
密碼文件:
$ ll $ORACLE_HOME/dbs/orapw*
歸檔日誌:
SQL> select name from v$archived_log;
警告日誌:
$ find /u01 -name ‘alert_*.log‘
ORACLE體系結構