Updatable, holdable, and scrollable cursors on remote procedures are not supported.
在远程过程上不支持可更新、可持有和可滚动的游标。
This means it will use MRF for scrollable cursors only if the server supports it for T4 and T2u.
这意味着如果服务器在T4和T2u上支持它，将仅对可滚动游标使用MRF。
In addition, the new property is used for both forward only and scrollable cursors for T2zos.
另外，对于T2zos，新的属性可用于单进游标和可滚动游标。
Both the ibm_db2 and PDO_IBM drivers support two types of cursors: forward-only cursors and scrollable cursors.
ibm_db2和PDO_IBM驱动程序都支持两种类型的游标：只能前进(forward -only)的游标和可滚动游标。
The default value for this property is true, which means the driver will always try to use multi-row fetch (MRF) for scrollable cursors if the server supports it.
该属性的默认值是true，这意味着在服务器支持的情况下，驱动程序将尝试对可滚动游标使用多行获取(MRF)。
However, in some cases, you will need to read cursors both forward and backward, in which case you should use scrollable cursor.
但某些情况下，您需要游标既能向前又能向后，此时需要使用可滚动游标。
The reason for this performance issue is that Unified ODBC USES scrollable dynamic cursors to issue SELECT statements.
产生这种性能问题的原因是，统一odbc使用可滚动的键集驱动游标来发出SELECT语句。
The reason for this performance issue is that Unified ODBC USES scrollable dynamic cursors to issue SELECT statements.
产生这种性能问题的原因是，统一odbc使用可滚动的键集驱动游标来发出SELECT语句。
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