标签：oracle _external_scn_reject 11.2.0.4 12.1.0.1 scn headroom
关于oracle db 11gR2版本上的_external_scn_rejection_threshold_hours参数和scn headroom补丁问题Please note that there are no SCN hardening fixes for the following versions. The recommendation for these versions is to upgrade to a newer release: All versions up to and including 9.2.0.7 Versions 10.1.0.2 to 10.1.0.4 inclusive Versions 10.2.0.1 and 10.2.0.2 Version 11.1.0.6 Version 11.2.0.1从这句话可以看出：以上版本的oracle数据库软件没有修复scn headroom 的补丁。请升级到更新的版本。这一招够狠的。
Versions 11.2.0.4 and 12.1.0.1 onwards already include the main SCN fixes but the "scnhealthcheck" script described above can still be used on those releases to check the current headroom.从这句话可以看出，在11.2.0.4及其12.1.0.1版本上，已经包括了对scn问题的修复（fixes）,说白了，11.2.0.4及其12.1.0.1的程序版本已经修复了scn headroom问题。
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关于oracle db 11gR2版本上的_external_scn_rejection_threshold_hours参数和scn headroom补丁问题
标签：oracle _external_scn_reject 11.2.0.4 12.1.0.1 scn headroom
原文地址：http://blog.csdn.net/msdnchina/article/details/38409589
