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Startup Command and Parameter Reference
Startup Parameter Descriptions : Check Double-byte Enabled (-checkdbe)

Check Double-byte Enabled (-checkdbe)

Use Check Double-byte Enabled (-checkdbe) when you modify an OpenEdge application to support double-byte characters or extended character data.
Operating system and syntax
UNIX / Windows
Use with
Maximum value
Minimum value
Single-user default
Multi-user default
Client Session
The -checkdbe parameter specifies that ABL generate compile-time warning messages whenever it finds a LENGTH function, SUBSTRING function, SUBSTRING statement, or OVERLAY statement without a CHARACTER, COLUMN, RAW, or FIXED option.