A colleague came up with the idea to use a no_merge hint. Then everything
works again. Very strange.
CURSOR get_fks(par_target_table user_tables.table_name%TYPE)
IS
WITH
user_constr AS
(
SELECT /*+ no_merge */ *
FROM all_constraints
WHERE owner = sys_context('USERENV', 'CURRENT_SCHEMA')
)
SELECT r.constraint_name,
r.table_name
FROM user_constr r,
user_constr t
WHERE t.table_name = par_target_table
AND t.constraint_type = 'P'
AND t.constraint_name = r.r_constraint_name
;
Regards
Ahmed Fikri
Am Di., 29. Jan. 2019 um 10:33 Uhr schrieb Ahmed <gherrami@xxxxxxxxx>:
Yes the schema running the code is the same as the schema owning the tables
That's what I did:
CREATE USER tester IDENTIFIED BY tester QUOTA 10M ON USERS;
GRANT CREATE SESSION TO tester;
GRANT CREATE TABLE TO tester;
-- after loggon as tester
CREATE TABLE PARENT(ID NUMBER PRIMARY KEY);
CREATE TABLE PARENT(ID NUMBER PRIMARY KEY);
CREATE TABLE CHILD(ID NUMBER, parent_id NUMBER ,CONSTRAINT FOREIGN KEY
REFERENCES PARENT(ID));
DECLARE
-- table that has Foreignkey pointing on it
v_tbl_name VARCHAR2(30) := 'PARENT';
CURSOR get_massdata_tableinfo
IS
SELECT v_tbl_name table_name FROM dual
;
CURSOR get_fks(par_target_table user_tables.table_name%TYPE)
IS
WITH
user_constr AS
(
SELECT *
FROM all_constraints
WHERE owner = sys_context('USERENV', 'CURRENT_SCHEMA')
)
SELECT r.constraint_name,
r.table_name
FROM user_constr r,
user_constr t
WHERE t.table_name = par_target_table
AND t.constraint_type = 'P'
AND t.constraint_name = r.r_constraint_name
;
BEGIN
FOR crec IN get_massdata_tableinfo
LOOP
--
dbms_output.put_line('Table Name ' || crec.table_name);
-- disable FK´s pointing to table
FOR rec IN get_fks(crec.table_name) --no rows in 12.2.0.1 (but it
works in 11.2.0.4 and 12.1.0.2)
LOOP
dbms_output.put_line('ALTER TABLE ' || rec.table_name ||
' DISABLE CONSTRAINT ' || rec.constraint_name);
END LOOP;
END LOOP;
END;
I get AS Output:
Table Name PARENT
But on 11.2.0.4 or 12.1.0.2-- the same steps I get as Output:
Table Name PARENT
ALTER TABLE CHILD DISABLE CONSTRAINT SYS_C00444321
This confuses me
The context of these error is an attempt to upgrade our software from
11.2.0.4 to 12.2.0.1.
Everything works fine on 11.2.0.4. In the example block above I try to
summarize only the error here in this list.
we have patched the following patch.
ARU platform id: 226
ARU platform description:: Linux x86-64
Installed Top-level Products (1):
Oracle Database 12c
12.2.0.1.0
There are 1 products installed in this Oracle Home.
Interim patches (1) :
Patch 28662603 : applied on Sat Nov 24 14:07:07 CET 2018
Unique Patch ID: 22485591
Patch description: "Database Oct 2018 Release Update : 12.2.0.1.181016
(28662603)"
Created on 5 Oct 2018, 03:26:32 hrs PST8PDT
Regards
Ahmed Fikri
Am Di., 29. Jan. 2019 um 10:05 Uhr schrieb Jonathan Lewis <
jonathan@xxxxxxxxxxxxxxxxxx>:
It works for me on an unpatched 12.2.0.1
In my case I log in, create a parent and child table, then run your
code. Is the schema running your code the same as the schema owning the
tables ?
Could there be a difference in privileges rather than a bug.
Regards
Jonathan Lewis
________________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx> on
behalf of Ahmed <gherrami@xxxxxxxxx>
Sent: 28 January 2019 14:57
To: ORACLE-L
Subject: a strange behavior in Oracle 12.2.0.1 by nested PLSQL cursor
Hi,
The following block should provide the commands to disable the foreign
key pointing on a table. It works wonderfully in 11.2.0.4 and 12.1.0.2 but
not on 12.2.0.1. Does not trigger an error but also no results. You can
test it, just replace 'MYTABLE' with a table that has foreign key pointing
on it.
DECLARE
-- table that has Foreignkey pointing on it
v_tbl_name VARCHAR2(30) := 'MYTABLE';
CURSOR get_massdata_tableinfo
IS
SELECT v_tbl_name table_name FROM dual
;
CURSOR get_fks(par_target_table user_tables.table_name%TYPE)
IS
WITH
user_constr AS
(
SELECT *
FROM all_constraints
WHERE owner = sys_context('USERENV', 'CURRENT_SCHEMA')
)
SELECT r.constraint_name,
r.table_name
FROM user_constr r,
user_constr t
WHERE t.table_name = par_target_table
AND t.constraint_type = 'P'
AND t.constraint_name = r.r_constraint_name
;
BEGIN
FOR crec IN get_massdata_tableinfo
LOOP
--
dbms_output.put_line('Table Name ' || crec.table_name);
-- disable FK´s pointing to table
FOR rec IN get_fks(crec.table_name) --no rows in 12.2.0.1 (but it
works in 11.2.0.4 and 12.1.0.2)
LOOP
dbms_output.put_line('ALTER TABLE ' || rec.table_name ||
' DISABLE CONSTRAINT ' || rec.constraint_name);
END LOOP;
END LOOP;
END;
If I call the SQL directly, then I get records:
WITH
user_constr AS
(
SELECT *
FROM all_constraints
WHERE owner = sys_context('USERENV', 'CURRENT_SCHEMA')
)
SELECT r.constraint_name,
r.table_name
FROM user_constr r,
user_constr t
WHERE t.table_name = 'MY_TABLE'
AND t.constraint_type = 'P'
AND t.constraint_name = r.r_constraint_name
Is this a bug or have I just missed something?
Regards
Ahmed Fikri
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