CREATE TABLE NEW_TABLE (
    F1  INTEGER,
    F2  INTEGER
);

SET TERM ^ ;

CREATE OR ALTER TRIGGER NEW_TABLE_AIUD0 FOR NEW_TABLE
ACTIVE AFTER INSERT OR UPDATE OR DELETE POSITION 0
as
begin

end
^

execute block
returns(ID int)
as
begin
  in autonomous transaction do
    execute statement 'drop trigger NEW_TABLE_AIUD0';

  suspend; --different errors

  execute statement 'alter table NEW_TABLE alter F2 position 1';
end
^

/* without suspend;

Undefined name.
unsuccessful metadata update.
ALTER TABLE NEW_TABLE failed.
SQL error code = -204.
Table unknown.
NEW_TABLE.
<Missing arg #1 - possibly status vector overflow>.
---------------------------------------------------
SQLCODE: -204
SQLSTATE: 42S02
GDSCODE: 335544351*/


/* with suspend;

This operation is not defined for system tables.
unsuccessful metadata update.
ALTER TABLE NEW_TABLE failed.
deadlock.
update conflicts with concurrent update.
concurrent transaction number is 215649.
At block line: 10, col: 3.*/