# 2751 Loading More Than One Instance of an External Module Can Cause Module Load Failure

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At application startup, I open a disk- and a memory database, and then copy the stored functions from the disk database to the memory database, so that I can use them later in the memory database context e.g. for a "create table as...".

That works fine with internal SQL/PSM functions.

But when using an external function, in this case flagset(value, flagno: Integer):Boolean, a simple function that just checks if a bit in a integer is set, I have some trouble.

When executing the query "select * from diskdb.table where flagset(flags, 2)=false" in the disk database context (DataBaseName := 'disk'), I get the correct result set.

But when executing the same query (with the diskdb qualifier) in the memory database context, I get an empty result set.