By default, Embedded SQL/C connections, cursors, and dynamic statements cannot be shared by multiple threads. The namespace for each of these object types is limited to the currently executing thread; one thread cannot refer to objects that were created by another thread. Objects can be shared by setting the macro CONNECTIONS_ARE_SHARED_ACROSS_THREADS to 1 by using the -D compiler option when compiling the sybesql.c module.
WARNING! If Embedded SQL/C objects are shared by multiple threads, the application programmer must add thread serialization code to ensure that objects associated with a single connection are not used simultaneously by multiple threads.
Normally, Dynamic descriptors can be shared by multiple threads. To give each thread its own namespace for dynamic descriptors, when compiling the sybesql.c module, use the -D compiler option to set the macro DESCRIPTOR_SCOPE_IS_THREAD to 1 .
