[20170401]11G Deprecated Attributes for LOG_ARCHIVE_DEST_n.txt --//前几天与itpub一个网友的交流,提到LOG_ARCHIVE_DEST_n参数提到如下参数已经废除了,做一个记录. http://docs.oracle.com/cd/E11882_01/server.112/e40402/initparams125.htm#REFRN10086 The following attributes are deprecated for the LOG_ARCHIVE_DEST_n parameter. They are retained for backward compatibility only. Table 1-2 Deprecated Attributes on the LOG_ARCHIVE_DEST_n Initialization Parameter Deprecated Attribute     Alternative ARCH     Specify SYNC or ASYNC. ASYNC is the default if neither attribute is specified. LGWR     Specify SYNC or ASYNC. ASYNC is the default if neither attribute is specified. OPTIONAL Destinations are optional by default. VERIFY   None. This attribute is only used with the deprecated ARCH attribute. In addition, note the following changes to the ASYNC and SYNC attributes: The BLOCKS keyword on the ASYNC attribute is no longer needed. It is no longer necessary to set this keyword because Data Guard dynamically adjusts the block count up or down to an appropriate number of blocks, as necessary. The PARALLEL and NOPARALLEL keywords on the SYNC attribute are no longer needed.