Tcl creates a single interpreter for each Apply task or InitialSync thread. For example, if you have four Apply task threads, Tcl uses four independent interpreters.

If you configured the replication job to use multiple subtask threads for an Apply task, Tcl creates a single interpreter for each subtask thread. You enable subtask threads by setting the apply.subtasks_enabled parameter to 1 on the

Runtime Settings

tab >

Advanced Settings

view.

For Teradata, Netezza,

PostgreSQL,

and Greenplum targets, Data Replication can use either a native load utility or the appropriate ODBC driver for initial materialization of target tables. For Microsoft SQL Server

and DB2

targets, InitialSync cannot use the native load utility with Tcl expressions that calculate column values for the target tables. For these targets, set the initial.enforce_odbc_load parameter to 1.