static代码块只会在类中加载执行一次~
测试代码
public class TestStatic {{System.out.println("匿名代码块");}// static只加载一次static{System.out.println("静态代码块");}public TestStatic(){System.out.println("构造方法");}public …
1级变0级的原因:
1.explicit deletion of the level 0 backups , ignoring retention policy,不要手动delete backup,使用delete obsolete
2.deletion from disk followed by crossheck/delete expired 不要crosscheck expired 会删除字典
3.if a catalog is NO…