Re: ARC buffer strategy committed

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Jan Wieck <JanWieck(at)Yahoo(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: ARC buffer strategy committed
Date: 2003-11-13 03:24:40
Message-ID: 17428.1068693880@sss.pgh.pa.us
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Jan Wieck <JanWieck(at)Yahoo(dot)com> writes:
> That's strange, if I reverse apply my patch I have buffer leak's and all
> kinds of crap. Can't even initdb. Who else applied patches tonight?

FWIW, I can initdb --- that seems fine --- but the regression tests spew
lots of small fragments. What I suspect is that the bufmgr is
occasionally returning the wrong buffer :-(

regression.diffs attached. Also, "grep TRAP postmaster.log" shows
this is the cause of the coredump midway through:

TRAP: FailedAssertion("!(( (&(cdb_replace->buf_tag))->rnode.tblNode == (&(buf->tag))->rnode.tblNode && (&(cdb_replace->buf_tag))->rnode.relNode == (&(buf->tag))->rnode.relNode && (&(cdb_replace->buf_tag))->blockNum == (&(buf->tag))->blockNum ))", File: "freelist.c", Line: 610)

Note this is with a serial test (make installcheck). Chris' very
different-looking results may be because he was doing parallel tests;
or there might be something else involved.

regards, tom lane

*** ./expected/name.out Sun May 25 20:11:28 2003
--- ./results/name.out Wed Nov 12 22:16:27 2003
***************
*** 90,126 ****
(6 rows)

SELECT '' AS seven, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*';
! seven | f1
! -------+-----------------------------------------------------------------
! | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
! | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
! | asdfghjkl;
! | 343f%2a
! | d34aaasdf
! |
! | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
! (7 rows)
!
SELECT '' AS zero, c.f1 FROM NAME_TBL c WHERE c.f1 !~ '.*';
! zero | f1
! ------+----
! (0 rows)
!
SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '[0-9]';
! three | f1
! -------+-----------------------------------------------------------------
! | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
! | 1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopq
! | 343f%2a
! | d34aaasdf
! | 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890ABCDEFGHIJKLMNOPQ
! (5 rows)
!
SELECT '' AS two, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*asdf.*';
! two | f1
! -----+------------
! | asdfghjkl;
! | d34aaasdf
! (2 rows)
!
DROP TABLE NAME_TBL;
--- 90,104 ----
(6 rows)

SELECT '' AS seven, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*';
! ERROR: could not access status of transaction 2752512
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS zero, c.f1 FROM NAME_TBL c WHERE c.f1 !~ '.*';
! ERROR: could not access status of transaction 2752512
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '[0-9]';
! ERROR: could not access status of transaction 2752512
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS two, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*asdf.*';
! ERROR: could not access status of transaction 2752512
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
DROP TABLE NAME_TBL;

======================================================================

*** ./expected/varchar.out Mon May 21 12:54:46 2001
--- ./results/varchar.out Wed Nov 12 22:16:27 2003
***************
*** 2,111 ****
-- VARCHAR
--
CREATE TABLE VARCHAR_TBL(f1 varchar(1));
INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
INSERT INTO VARCHAR_TBL (f1) VALUES ('A');
-- any of the following three input formats are acceptable
INSERT INTO VARCHAR_TBL (f1) VALUES ('1');
INSERT INTO VARCHAR_TBL (f1) VALUES (2);
INSERT INTO VARCHAR_TBL (f1) VALUES ('3');
-- zero-length char
INSERT INTO VARCHAR_TBL (f1) VALUES ('');
-- try varchar's of greater than 1 length
INSERT INTO VARCHAR_TBL (f1) VALUES ('cd');
! ERROR: value too long for type character varying(1)
INSERT INTO VARCHAR_TBL (f1) VALUES ('c ');
SELECT '' AS seven, VARCHAR_TBL.*;
! seven | f1
! -------+----
! | a
! | A
! | 1
! | 2
! | 3
! |
! | c
! (7 rows)
!
SELECT '' AS six, c.*
FROM VARCHAR_TBL c
WHERE c.f1 <> 'a';
! six | f1
! -----+----
! | A
! | 1
! | 2
! | 3
! |
! | c
! (6 rows)
!
SELECT '' AS one, c.*
FROM VARCHAR_TBL c
WHERE c.f1 = 'a';
! one | f1
! -----+----
! | a
! (1 row)
!
SELECT '' AS five, c.*
FROM VARCHAR_TBL c
WHERE c.f1 < 'a';
! five | f1
! ------+----
! | A
! | 1
! | 2
! | 3
! |
! (5 rows)
!
SELECT '' AS six, c.*
FROM VARCHAR_TBL c
WHERE c.f1 <= 'a';
! six | f1
! -----+----
! | a
! | A
! | 1
! | 2
! | 3
! |
! (6 rows)
!
SELECT '' AS one, c.*
FROM VARCHAR_TBL c
WHERE c.f1 > 'a';
! one | f1
! -----+----
! | c
! (1 row)
!
SELECT '' AS two, c.*
FROM VARCHAR_TBL c
WHERE c.f1 >= 'a';
! two | f1
! -----+----
! | a
! | c
! (2 rows)
!
DROP TABLE VARCHAR_TBL;
--
-- Now test longer arrays of char
--
CREATE TABLE VARCHAR_TBL(f1 varchar(4));
INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
INSERT INTO VARCHAR_TBL (f1) VALUES ('ab');
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd');
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcde');
! ERROR: value too long for type character varying(4)
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd ');
SELECT '' AS four, VARCHAR_TBL.*;
! four | f1
! ------+------
! | a
! | ab
! | abcd
! | abcd
! (4 rows)
!
--- 2,70 ----
-- VARCHAR
--
CREATE TABLE VARCHAR_TBL(f1 varchar(1));
+ ERROR: could not access status of transaction 2752512
+ DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('A');
+ ERROR: relation "varchar_tbl" does not exist
-- any of the following three input formats are acceptable
INSERT INTO VARCHAR_TBL (f1) VALUES ('1');
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES (2);
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('3');
+ ERROR: relation "varchar_tbl" does not exist
-- zero-length char
INSERT INTO VARCHAR_TBL (f1) VALUES ('');
+ ERROR: relation "varchar_tbl" does not exist
-- try varchar's of greater than 1 length
INSERT INTO VARCHAR_TBL (f1) VALUES ('cd');
! ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('c ');
+ ERROR: relation "varchar_tbl" does not exist
SELECT '' AS seven, VARCHAR_TBL.*;
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS six, c.*
FROM VARCHAR_TBL c
WHERE c.f1 <> 'a';
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS one, c.*
FROM VARCHAR_TBL c
WHERE c.f1 = 'a';
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS five, c.*
FROM VARCHAR_TBL c
WHERE c.f1 < 'a';
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS six, c.*
FROM VARCHAR_TBL c
WHERE c.f1 <= 'a';
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS one, c.*
FROM VARCHAR_TBL c
WHERE c.f1 > 'a';
! ERROR: relation "varchar_tbl" does not exist
SELECT '' AS two, c.*
FROM VARCHAR_TBL c
WHERE c.f1 >= 'a';
! ERROR: relation "varchar_tbl" does not exist
DROP TABLE VARCHAR_TBL;
+ ERROR: table "varchar_tbl" does not exist
--
-- Now test longer arrays of char
--
CREATE TABLE VARCHAR_TBL(f1 varchar(4));
+ ERROR: type "pg_catalog.varchar" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('ab');
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd');
+ ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcde');
! ERROR: relation "varchar_tbl" does not exist
INSERT INTO VARCHAR_TBL (f1) VALUES ('abcd ');
+ ERROR: relation "varchar_tbl" does not exist
SELECT '' AS four, VARCHAR_TBL.*;
! ERROR: relation "varchar_tbl" does not exist

======================================================================

*** ./expected/text.out Tue Jan 4 11:19:34 2000
--- ./results/text.out Wed Nov 12 22:16:27 2003
***************
*** 2,25 ****
-- TEXT
--
SELECT text 'this is a text string' = text 'this is a text string' AS true;
! true
! ------
! t
! (1 row)
!
SELECT text 'this is a text string' = text 'this is a text strin' AS false;
! false
! -------
! f
! (1 row)
!
CREATE TABLE TEXT_TBL (f1 text);
INSERT INTO TEXT_TBL VALUES ('doh!');
INSERT INTO TEXT_TBL VALUES ('hi de ho neighbor');
SELECT '' AS two, * FROM TEXT_TBL;
! two | f1
! -----+-------------------
! | doh!
! | hi de ho neighbor
! (2 rows)
!
--- 2,15 ----
-- TEXT
--
SELECT text 'this is a text string' = text 'this is a text string' AS true;
! ERROR: type "text" does not exist
SELECT text 'this is a text string' = text 'this is a text strin' AS false;
! ERROR: type "text" does not exist
CREATE TABLE TEXT_TBL (f1 text);
+ ERROR: type "text" does not exist
INSERT INTO TEXT_TBL VALUES ('doh!');
+ ERROR: relation "text_tbl" does not exist
INSERT INTO TEXT_TBL VALUES ('hi de ho neighbor');
+ ERROR: relation "text_tbl" does not exist
SELECT '' AS two, * FROM TEXT_TBL;
! ERROR: relation "text_tbl" does not exist

======================================================================

*** ./expected/int8.out Thu Mar 27 11:35:31 2003
--- ./results/int8.out Wed Nov 12 22:16:27 2003
***************
*** 111,285 ****
--
SELECT '' AS to_char_1, to_char(q1, '9G999G999G999G999G999'), to_char(q2, '9,999,999,999,999,999')
FROM INT8_TBL;
! to_char_1 | to_char | to_char
! -----------+------------------------+------------------------
! | 123 | 456
! | 123 | 4,567,890,123,456,789
! | 4,567,890,123,456,789 | 123
! | 4,567,890,123,456,789 | 4,567,890,123,456,789
! | 4,567,890,123,456,789 | -4,567,890,123,456,789
! (5 rows)
!
SELECT '' AS to_char_2, to_char(q1, '9G999G999G999G999G999D999G999'), to_char(q2, '9,999,999,999,999,999.999,999')
FROM INT8_TBL;
! to_char_2 | to_char | to_char
! -----------+--------------------------------+--------------------------------
! | 123.000,000 | 456.000,000
! | 123.000,000 | 4,567,890,123,456,789.000,000
! | 4,567,890,123,456,789.000,000 | 123.000,000
! | 4,567,890,123,456,789.000,000 | 4,567,890,123,456,789.000,000
! | 4,567,890,123,456,789.000,000 | -4,567,890,123,456,789.000,000
! (5 rows)
!
SELECT '' AS to_char_3, to_char( (q1 * -1), '9999999999999999PR'), to_char( (q2 * -1), '9999999999999999.999PR')
FROM INT8_TBL;
! to_char_3 | to_char | to_char
! -----------+--------------------+------------------------
! | <123> | <456.000>
! | <123> | <4567890123456789.000>
! | <4567890123456789> | <123.000>
! | <4567890123456789> | <4567890123456789.000>
! | <4567890123456789> | 4567890123456789.000
! (5 rows)
!
SELECT '' AS to_char_4, to_char( (q1 * -1), '9999999999999999S'), to_char( (q2 * -1), 'S9999999999999999')
FROM INT8_TBL;
! to_char_4 | to_char | to_char
! -----------+-------------------+-------------------
! | 123- | -456
! | 123- | -4567890123456789
! | 4567890123456789- | -123
! | 4567890123456789- | -4567890123456789
! | 4567890123456789- | +4567890123456789
! (5 rows)
!
SELECT '' AS to_char_5, to_char(q2, 'MI9999999999999999') FROM INT8_TBL;
! to_char_5 | to_char
! -----------+-------------------
! | 456
! | 4567890123456789
! | 123
! | 4567890123456789
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_6, to_char(q2, 'FMS9999999999999999') FROM INT8_TBL;
! to_char_6 | to_char
! -----------+-------------------
! | +456
! | +4567890123456789
! | +123
! | +4567890123456789
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_7, to_char(q2, 'FM9999999999999999THPR') FROM INT8_TBL;
! to_char_7 | to_char
! -----------+--------------------
! | 456TH
! | 4567890123456789TH
! | 123RD
! | 4567890123456789TH
! | <4567890123456789>
! (5 rows)
!
SELECT '' AS to_char_8, to_char(q2, 'SG9999999999999999th') FROM INT8_TBL;
! to_char_8 | to_char
! -----------+---------------------
! | + 456th
! | +4567890123456789th
! | + 123rd
! | +4567890123456789th
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_9, to_char(q2, '0999999999999999') FROM INT8_TBL;
! to_char_9 | to_char
! -----------+-------------------
! | 0000000000000456
! | 4567890123456789
! | 0000000000000123
! | 4567890123456789
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_10, to_char(q2, 'S0999999999999999') FROM INT8_TBL;
! to_char_10 | to_char
! ------------+-------------------
! | +0000000000000456
! | +4567890123456789
! | +0000000000000123
! | +4567890123456789
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_11, to_char(q2, 'FM0999999999999999') FROM INT8_TBL;
! to_char_11 | to_char
! ------------+-------------------
! | 0000000000000456
! | 4567890123456789
! | 0000000000000123
! | 4567890123456789
! | -4567890123456789
! (5 rows)
!
SELECT '' AS to_char_12, to_char(q2, 'FM9999999999999999.000') FROM INT8_TBL;
! to_char_12 | to_char
! ------------+-----------------------
! | 456.000
! | 4567890123456789.000
! | 123.000
! | 4567890123456789.000
! | -4567890123456789.000
! (5 rows)
!
SELECT '' AS to_char_13, to_char(q2, 'L9999999999999999.000') FROM INT8_TBL;
! to_char_13 | to_char
! ------------+------------------------
! | 456.000
! | 4567890123456789.000
! | 123.000
! | 4567890123456789.000
! | -4567890123456789.000
! (5 rows)
!
SELECT '' AS to_char_14, to_char(q2, 'FM9999999999999999.999') FROM INT8_TBL;
! to_char_14 | to_char
! ------------+--------------------
! | 456.
! | 4567890123456789.
! | 123.
! | 4567890123456789.
! | -4567890123456789.
! (5 rows)
!
SELECT '' AS to_char_15, to_char(q2, 'S 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 . 9 9 9') FROM INT8_TBL;
! to_char_15 | to_char
! ------------+-------------------------------------------
! | +4 5 6 . 0 0 0
! | +4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 . 0 0 0
! | +1 2 3 . 0 0 0
! | +4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 . 0 0 0
! | -4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 . 0 0 0
! (5 rows)
!
SELECT '' AS to_char_16, to_char(q2, '99999 "text" 9999 "9999" 999 "\\"text between quote marks\\"" 9999') FROM INT8_TBL;
! to_char_16 | to_char
! ------------+-----------------------------------------------------------
! | text 9999 "text between quote marks" 456
! | 45678 text 9012 9999 345 "text between quote marks" 6789
! | text 9999 "text between quote marks" 123
! | 45678 text 9012 9999 345 "text between quote marks" 6789
! | -45678 text 9012 9999 345 "text between quote marks" 6789
! (5 rows)
!
SELECT '' AS to_char_17, to_char(q2, '999999SG9999999999') FROM INT8_TBL;
! to_char_17 | to_char
! ------------+-------------------
! | + 456
! | 456789+0123456789
! | + 123
! | 456789+0123456789
! | 456789-0123456789
! (5 rows)
!
--- 111,166 ----
--
SELECT '' AS to_char_1, to_char(q1, '9G999G999G999G999G999'), to_char(q2, '9,999,999,999,999,999')
FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_2, to_char(q1, '9G999G999G999G999G999D999G999'), to_char(q2, '9,999,999,999,999,999.999,999')
FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_3, to_char( (q1 * -1), '9999999999999999PR'), to_char( (q2 * -1), '9999999999999999.999PR')
FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_4, to_char( (q1 * -1), '9999999999999999S'), to_char( (q2 * -1), 'S9999999999999999')
FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_5, to_char(q2, 'MI9999999999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_6, to_char(q2, 'FMS9999999999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_7, to_char(q2, 'FM9999999999999999THPR') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_8, to_char(q2, 'SG9999999999999999th') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_9, to_char(q2, '0999999999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_10, to_char(q2, 'S0999999999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_11, to_char(q2, 'FM0999999999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_12, to_char(q2, 'FM9999999999999999.000') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_13, to_char(q2, 'L9999999999999999.000') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_14, to_char(q2, 'FM9999999999999999.999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_15, to_char(q2, 'S 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 . 9 9 9') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_16, to_char(q2, '99999 "text" 9999 "9999" 999 "\\"text between quote marks\\"" 9999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory
SELECT '' AS to_char_17, to_char(q2, '999999SG9999999999') FROM INT8_TBL;
! ERROR: could not access status of transaction 2686976
! DETAIL: could not open file "/home/tgl/testversion/data/pg_clog/0002": No such file or directory

======================================================================

*** ./expected/oid.out Thu Sep 25 02:58:06 2003
--- ./results/oid.out Wed Nov 12 22:16:27 2003
***************
*** 41,75 ****
(5 rows)

SELECT '' AS three, o.* FROM OID_TBL o WHERE o.f1 <= '1234';
! three | f1
! -------+------
! | 1234
! | 987
! | 0
! (3 rows)
!
! SELECT '' AS two, o.* FROM OID_TBL o WHERE o.f1 < '1234';
! two | f1
! -----+-----
! | 987
! | 0
! (2 rows)
!
! SELECT '' AS four, o.* FROM OID_TBL o WHERE o.f1 >= '1234';
! four | f1
! ------+------------
! | 1234
! | 1235
! | 4294966256
! | 99999999
! (4 rows)
!
! SELECT '' AS three, o.* FROM OID_TBL o WHERE o.f1 > '1234';
! three | f1
! -------+------------
! | 1235
! | 4294966256
! | 99999999
! (3 rows)
!
! DROP TABLE OID_TBL;
--- 41,47 ----
(5 rows)

SELECT '' AS three, o.* FROM OID_TBL o WHERE o.f1 <= '1234';
! server closed the connection unexpectedly
! This probably means the server terminated abnormally
! before or while processing the request.
! connection to server was lost

... from here down they all fail with
! psql: FATAL: the database system is starting up

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