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    GoogleEarthEnging—可见光红外成像辐射套件(VIIRS)每日表面反射率(VNP09GA)产品提供了来自Suomi国家极地轨道合作伙伴(S-NPP)VIIRS传感器的土地表面反射率估计。

    The Visible Infrared Imaging Radiometer Suite (VIIRS) daily surface reflectance (VNP09GA) product provides an estimate of land surface reflectance from the Suomi National Polar-Orbiting Partnership (S-NPP) VIIRS sensor. Data are provided for three imagery bands (I1, I2, I3) at nominal 500 meter resolution (463 meter) and nine moderate-resolution bands (M1, M2, M3, M4, M5, M7, M8, M10, M11) at nominal 1 kilometer (926 meter) resolution. The 500 meter and 1 kilometer datasets are derived through resampling the native 375 meter and 750 meter VIIRS resolutions, respectively, in the L2 input product. These bands are corrected for atmospheric conditions to provide an estimate of the surface spectral reflectance as it would be measured at ground level.

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    oracle11g dataguard安装实施

    Oracle DataGuard 实施 1.环境准备 1.1 修改主备机hosts文件 vi /etc/hosts 128.160.11.84    wang 128.160.11.218  dg2 1.2 修改(添加)主备机listener.ora和tnsnames.ora文件 vi $ORACLE_HOME/network/admin/listener.ora SID_LIST_LISTENER =         (SID_LIST =           (SID_DESC =                 (SID_NAME = softdb)                 (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1/)           )         ) LISTENER =   (DESCRIPTION_LIST =     (DESCRIPTION =       (ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))     )   ) ADR_BASE_LISTENER = /u01/app/oracle vi $ORACLE_HOME/network/admin/tnsnames.ora SOFTPRI =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = softdb)     )   ) SOFTSTD =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = dg2)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = softdb)     )   ) 1.3 确定主备机parameter/control/data/log/archivelog file 的路径 audit_file_dest='/u01/app/oracle/admin/softdb/adump' 1.4 设置主库强制写日志 SQL> select force_logging from v$database; FOR --- NO SQL> alter database force logging; Database altered. SQL> select force_logging from v$database; FOR --- YES 1.5 设置主库归档模式 SQL> archive log list; SQL> shutdown immediate; SQL> startup mount; SQL> alter database archivelog; SQL> alter database open; SQL> archive log list; Database log mode              Archive Mode Automatic archival             Enabled Archive destination            /u01/app/oracle/product/11.2.0/db_1//dbs/arch Oldest online log sequence     175 Next log sequence to archive   177 Current log sequence           177 2. 产生用于建立Standby库的全备份集及控制文件 2.1 创建并修改主库参数文件pfile SQL> shutdown immediate; SQL> create pfile from spfile; 修改initsoftdb.ora vi $ORACLE_HOME/db

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