DYNAMICRESOLUTION|NODYNAMICRESOLUTION



有时候开启OGG进程的时候较慢，可能是因为需要同步的表太多，OGG在开启进程之前会将需要同步的表建立一个记录并且存入到磁盘中，这样就需要耗费大量的时间。OGG同时也提供了DYNAMICRESOLUTION | NODYNAMICRESOLUTION参数来解决这个问题，看官方如何描述的：

有时候开启OGG进程的时候较慢，可能是因为需要同步的表太多，OGG在开启进程之前会将需要同步的表建立一个记录并且存入到磁盘中，这样就需要耗费大量的时间。OGG同时也提供了DYNAMICRESOLUTION | NODYNAMICRESOLUTION参数来解决这个问题，看官方如何描述的：

DYNAMICRESOLUTION | NODYNAMICRESOLUTION Valid for Extract and Replicat Use the DYNAMICRESOLUTION and NODYNAMICRESOLUTION parameters to control how table names are resolved. Use DYNAMICRESOLUTION to make processing start sooner when there is a large number of tables specified in TABLE or MAP statements. By default, whenever a process starts, Oracle GoldenGate queries the database for the attributes of the tables and then builds an object record for them. The record is maintained in memory and on disk, and the process of building it can be time-consuming if the database is large. DYNAMICRESOLUTION causes the object record to be built one table at a time, instead of all at once. A table’s attributes are added to the record the first time its object ID enters the transaction log, which occurs with the first extracted transaction on that table. Recordbuilding for other tables is deferred until activity occurs. DYNAMICRESOLUTION is the same as WILDCARDRESOLVE DYNAMIC. NODYNAMICRESOLUTION causes the object record to be built at startup. This option is not supported for Teradata. NODYNAMICRESOLUTION is the same as WILDCARDRESOLVE IMMEDIATE. For more information about WILDCARDRESOLVE, see page 389.