备份归档日志--查看第一个归档位置过去一天以来生成的归档日志,dest_id代表归档日志存放位置,对应到v$archive_dest中1~10的des
备份归档日志
--查看第一个归档位置过去一天以来生成的归档日志,dest_id代表归档日志存放位置,对应到v$archive_dest中1~10的destination字段值,0代表不可用
SQL> select name from v$archived_log where dest_id=1 and first_time>=sysdate-1;
NAME
------------------------------------------------------------------------------------------------------------------------
/Oracle/10g/oracle/log/archive_log/archive_1_23_757801926.arclog
/oracle/10g/oracle/log/archive_log/archive_1_24_757801926.arclog
SQL> select name from v$archived_log where dest_id=10 and first_time>=sysdate-1;
NAME
------------------------------------------------------------------------------------------------------------------------
/oracle/10g/oracle/product/10.2.0/db_1/flash_recovery_area/ORALIFE/archivelog/2011_08_01/o1_mf_1_23_73fljh3f_.arc
/oracle/10g/oracle/product/10.2.0/db_1/flash_recovery_area/ORALIFE/archivelog/2011_08_02/o1_mf_1_24_73hwlry6_.arc
SQL> select destination from v$archive_dest;
DESTINATION
------------------------------------------------------------------------------------------------------------------------
/oracle/10g/oracle/log/archive_log
/oracle/10g/oracle/log/archive_log2
USE_DB_RECOVERY_FILE_DEST
10 rows selected.
--拷贝归档日志到指定的备份目录cp
备份参数文件
1)如果使用文本参数文件(pfile),使用OS命令拷贝到备份目录
2)如果使用spfile,使用create pfile 进行备份
3)如果使用pfile,使用create spfile进行备份
SQL> show parameter spfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string /oracle/10g/oracle/product/10.
2.0/db_1/dbs/spfileoralife.ora
--创建pfile,相当于备份spfile为pfileSQL> create pfile = '/oracle/10g/oracle/bakup/database/pfileoralife.ora'
2 from spfile;
File created.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
--使用pfile启动数据库到nomount状态,,也可以直接startup pfile='pfile全路径名'SQL> startup nomount pfile='/oracle/10g/oracle/bakup/database/pfileoralife.ora';
ORACLE instance started.
Total System Global Area 528482304 bytes
Fixed Size 1220360 bytes
Variable Size 146800888 bytes
Database Buffers 373293056 bytes
Redo Buffers 7168000 bytes
SQL> show parameter pfile;
--当用pfile启动数据库时,spfile参数为空NAME TYPE VALUE
------------------------------------ ---------------------- ------------------------------
spfile string
SQL> show parameter spfile;
NAME TYPE VALUE
------------------------------------ ---------------------- ------------------------------
spfile string
SQL> alter database mount;
Database altered.
SQL> alter database open;
Database altered.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.