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Part 2: The 32-Bit/64-Bit Drivers : The Oracle Wire Protocol Driver : Connection Option Descriptions : Describe at Prepare
  
Describe at Prepare
Attribute
DescribeAtPrepare (DAP)
Purpose
Determines whether the driver describes the SQL statement at prepare time.
This connection option can affect performance.
Valid Values
0 | 1
If set to 1 (Enabled), the driver describes the SQL statement at prepare time.
If set to 0 (Disabled), the driver does not describe the SQL statement at prepare time.
Notes
*This connection option can affect performance.
Default
0 (Disabled)
GUI Tab
Advanced tab
See also
Performance Considerations