sqlstate 02000 while declaring cursor/freeing statement

I'm new to the PostgreSQL community so please pardon what is probably a
silly question ...

I'm in the process of porting Informix ESQL to PostgreSQL. I
occasionally get sqlcode = 100 and sqlstate = 02000 when declaring
cursors or freeing prepared statements. Is this normal? For example:

$declare loop1 cursor with hold for
select distinct ( tabname )
from meta ;

results in sqlca.sqlcode = 100 and sqlca.sqlstate = '02000'
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