The innermost select query is in a loop that queries across multiple databases. And the query works for some databases and for some the prepare statement throws an error. The tablename is the same across databases For e.g 
select * from customers@db_01; <-- This will execute
...
...
select * from customers@db_08; <-- This one will throw a prepare fail.

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I am currently investigating if the way I open my local DB connection with AutoCommit has got anything to do with this.

In reply to Re^2: Oracle Db Link Error ORA-01001: invalid cursor by mediocremorsov
in thread Oracle Db Link Error ORA-01001: invalid cursor by mediocremorsov

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