备份与恢复（Parameter 文件恢复篇）
备份与恢复（Parameter 文件恢复篇）
环境：oracle 版本10.2.0.1
系统：contes 5.6
实验（一），parameter文件损坏之利用alert.log日志编写恢复。
1、 实验环境，直接删除参数文件。
[ora@dg-pp dbs]$ rm -rf initoracle.ora
2、关闭数据库（shutdown immediate），并开启数据库报错信息
SQL> startup
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/opt/oracle/product/10.2.0/db_1/dbs/initoracle.ora'
恢复：
1、 查看alert日志，截取开启数据库日志
processes = 150
sga_target = 457179136
control_files = /opt/oracle/oradata/oracle/control01.ctl, /opt/oracle/oradata/oracle/control02.ctl, /opt/oracle/oradata/oracle/control03.ctl
db_block_size = 8192
compatible = 10.2.0.1.0
db_file_multiblock_read_count= 16
db_recovery_file_dest = /opt/oracle/flash_recovery_area
db_recovery_file_dest_size= 2147483648
undo_management = AUTO
undo_tablespace = UNDOTBS1
remote_login_passwordfile= EXCLUSIVE
db_domain =
dispatchers = (PROTOCOL=TCP) (SERVICE=oracleXDB)
job_queue_processes = 10
background_dump_dest = /opt/oracle/admin/oracle/bdump
user_dump_dest = /opt/oracle/admin/oracle/udump
core_dump_dest = /opt/oracle/admin/oracle/cdump
audit_file_dest = /opt/oracle/admin/oracle/adump
db_name = oracle
open_cursors = 300
pga_aggregate_target = 150994944
2、vi initoracle.ora
processes = 150
sga_target = 457179136
control_files = /opt/oracle/oradata/oracle/control01.ctl, /opt/oracle/oradata/oracle/control02.ctl, /opt/oracle/oradata/oracle/control03.ctl
db_block_size = 8192
compatible = 10.2.0.1.0
db_file_multiblock_read_count= 16
db_recovery_file_dest = /opt/oracle/flash_recovery_area
db_recovery_file_dest_size= 2147483648
undo_management = AUTO
undo_tablespace = UNDOTBS1
remote_login_passwordfile= EXCLUSIVE
db_domain =
dispatchers = (PROTOCOL=TCP) (SERVICE=oracleXDB)
job_queue_processes = 10
background_dump_dest = /opt/oracle/admin/oracle/bdump
user_dump_dest = /opt/oracle/admin/oracle/udump
core_dump_dest = /opt/oracle/admin/oracle/cdump
audit_file_dest = /opt/oracle/admin/oracle/adump
db_name = oracle
open_cursors = 300
pga_aggregate_target = 150994944
3、开启数据库
SQL> startup
ORA-01078: failure in processing system parameters
LRM-00116: syntax error at 'dispatchers' following '='
进行vi initoracle.ora以下修改
#db_domain =
dispatchers ='(PROTOCOL=TCP) (SERVICE=oracleXDB)'
添加’’，就OK了。
再次开启数据库
SQL> startup
ORACLE instance started.
Total System Global Area 457179136 bytes
Fixed Size 1219976 bytes
Variable Size 134218360 bytes
Database Buffers 318767104 bytes
Redo Buffers 2973696 bytes
Database mounted.
Database opened.
总结：从alert日志里copy过来的一般可能会少’’，所以在编辑initoracle.ora文件的时候，如果提示错误，可以添加’’。