Nevertheless, to change a DB CFG parameter online, a connection to the database is mandatory, and the UPDATE DB CFG command must include the option IMMEDIATE, as shown in Listing 15.
尽管如此，要在线改变DB CFG参数，对数据库的连接是强制性的，而且UPDATE DB CFG命令必须包含IMMEDIATE选项，如清单15所示。
2
The factory default setting is for a null of –15 (dB).
工厂默认设置为空为摄氏-15 （分贝） 。
3
The 15 "low frequency driver combines 96 dB sensitivity with 1000 Watts (continuous) power handling, to deliver LF sound pressure levels well beyond those typical of systems its size."