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标签归档:调整数据库scn
一键修改Oracle SCN工具升级(patch scn)
前段时间开发了基于内存修改的patch scn小程序(修改oracle scn小工具(patch scn)),用来修改oracle数据库scn,实现快速调整oracle scn的功能(特别是在一些恢复的时候很有用),最近对其功能进一步完善,扩展了通过修改oracle controlfile实现调整scn功能,简单测试如下
数据库当前scn情况
C:\Users\XFF>sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on 星期四 10月 6 21:50:32 2022 Copyright (c) 1982, 2013, Oracle. All rights reserved. 连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> set num 16 SQL> select checkpoint_change# from v$database; CHECKPOINT_CHANGE# ------------------ 141743308712 SQL> shutdown immediate; 数据库已经关闭。 已经卸载数据库。 ORACLE 例程已经关闭。
启动库查看修改之后scn值
SQL> startup mount; ORACLE 例程已经启动。 Total System Global Area 6413680640 bytes Fixed Size 2293216 bytes Variable Size 1275068960 bytes Database Buffers 5117050880 bytes Redo Buffers 19267584 bytes 数据库装载完毕。 SQL> set num 16 SQL> select checkpoint_change# from v$database; CHECKPOINT_CHANGE# ------------------ 141743339676 SQL> alter database open; 数据库已更改。 SQL> select checkpoint_change# from v$database; CHECKPOINT_CHANGE# ------------------ 151743339602
数据库启动过程中scn会被改变,在mount的时候未发生改变
Patch_SCN下载:Patch_SCN下载
Patch_SCN使用说明:Patch_SCN使用说明
OraRecovery下载:OraRecovery下载
OraRecovery使用说明:OraRecovery使用说明