threads listlengths 1 2.99k |
|---|
[
{
"msg_contents": "Oops I screwed up again. :) \n\nI was actually right the first time my postgresql 7.0.3 was running with\nfsync off. Due to my weird results I searched more thoroughly and found my\n7.0.3's pg_options had a nofsync=1.\n\nSo 7.0.3 is twice as fast only with fsync off.\n\n7.1beta4 snapshot - fs... |
[
{
"msg_contents": "\n\nhi i'm re-sending this mail again to seek more help since i haven't got\nany solution as yet. Additionaly , could it be an oracle taking up so much \nresource so that i postgres can't get any of them? \n\nKatsu\n\n---------- Forwarded message ----------\nDate: Sun, 18 Feb 2001 15:27:47 +1... |
[
{
"msg_contents": "\nI am having some problems with our proxy server (wget times out on header)\nand would like to know whether it would be possible to install http access\nto the snapshots and other download files ?\n\nThis would probably also benefit others, no ?\n\nThanks\nAndreas\n",
"msg_date": "Mon, 2... |
[
{
"msg_contents": "\ntest/bench/{create|runtest}.sh uses switch '-Q' for\npostgres, but postgres gives error on it. Otherwise\nseems working, only lots of debug output is seen.\n\n-- \nmarko\n\n",
"msg_date": "Mon, 26 Feb 2001 12:15:42 +0200",
"msg_from": "Marko Kreen <marko@l-t.ee>",
"msg_from_op"... |
[
{
"msg_contents": "\n> Regardless of whether this particular behavior is fixable, this brings\n> up something that I think we *must* do before 7.1 release: create a\n> utility that blows away a corrupted logfile to allow the system to\n> restart with whatever is in the datafiles. Otherwise, there is no\n> reco... |
[
{
"msg_contents": "\n> > I am having some problems with our proxy server (wget times out on header)\n> > and would like to know whether it would be possible to install http access\n> > to the snapshots and other download files ?\n> >\n> > This would probably also benefit others, no ?\n> \n> See if this works: ... |
[
{
"msg_contents": "> So 7.0.3 is twice as fast only with fsync off.\n\nAre there FK updates/deletes in pgbench' tests?\nRemember how SELECT FOR UPDATE in FK triggers\naffects performance...\nAlso, 5 clients is small number.\n\nVadim\nP.S. Sorry for delays with my replies -\ninternet connection is pain here: it ... |
[
{
"msg_contents": ">> Regardless of whether this particular behavior is fixable,\n>> this brings up something that I think we *must* do before\n>> 7.1 release: create a utility that blows away a corrupted\n>> logfile to allow the system to restart with whatever is in\n>> the datafiles. Otherwise, there is no r... |
[
{
"msg_contents": "\n> > Imho this write at logfile init time adds a substantial amount of IO,\n> > that would better be avoided. If we really need this, it would imho \n> > be better to preallocate N logfiles and reuse them after checkpoint.\n> \n> Already done. See the WAL_FILES parameter.\n\nI meant somethi... |
[
{
"msg_contents": "\n> \tAre there any major outstandings that ppl have on their plates,\n> that should prevent a release?\n\nImho startup after a failing WAL recovery is a 'must do' before release,\nas Tom pointed out. Remember that you can currently run into this situation\nwith as easy a mistake as running o... |
[
{
"msg_contents": "\nOne thing that I remember from a performance test we once did is, that the results\nare a lot more realistic, better and more stable, if you try to decouple the startup of \nthe different clients a little bit, so they are not all in the same section of code at the same time.\n\nWe inserted ... |
[
{
"msg_contents": "Can anyone tell me what is going on, when I get a stuck spinlock?\nIs there a data corruption or anything else to worry about ?\nI've found some references about spinlocks in the -hackers list,\nso is that fixed with a later version than beta4 already?\n\nActually I was running a stack of pgb... |
[
{
"msg_contents": "\nI just put the regress test tool online. It's just a simple form, I'll\nadd the borders and stuff later. No reporting tool yet, but I'm working\non that now.\n\nhttp://www.postgresql.org/~vev/regress/\n\nBe prepared, it's gonna ask you for your regression.out and\nregression.diff files. ... |
[
{
"msg_contents": "\nis regression.out and/or regression.diff deleted if the tests pass? I've\nnever seen all tests pass so I don't know but I just had someone tell me\nthat it does.\n\nVince.\n-- \n==========================================================================\nVince Vielhaber -- KA8CSH email: ... |
[
{
"msg_contents": "vacuum analyze on pg_type fails if bogus entries remain in pg_operator.\nHere is a sample script to reproduce the problem.\n\ndrop table t1;\ncreate table t1(i int);\ndrop function foo(t1,t1);\ncreate function foo(t1,t1) returns bool as 'select true' language 'sql';\ncreate operator = (\n\tle... |
[
{
"msg_contents": "\n> > I agree that 30k looks like the magic delay, and probably 30/5 would be a\n> > good conservative choice. But now I think about the choice of number, I\n> > think it must vary with the speed of the machine and length of the\n> > transactions; at 20tps, each TX is completing in around 50m... |
[
{
"msg_contents": "At 10:56 27/02/01 +0100, Zeugswetter Andreas SB wrote:\n>\n>> > I agree that 30k looks like the magic delay, and probably 30/5 would be a\n>> > good conservative choice. But now I think about the choice of number, I\n>> > think it must vary with the speed of the machine and length of the\n>> ... |
[
{
"msg_contents": "Hi,\n\nI have an application which has an queue of data it has to insert into\na table in a local database. the insert-queries syntax is all the same,\nand the values are the only thing that differs. The insert-query looks\nlike this:\n\n INSERT INTO \"table\" VALUES(a, b, c, d, e, f, g, h)\n... |
[
{
"msg_contents": "Hi all,\n\nI've been trying to play with beta5 today on unixware 711. I have 2\nproblems:\n\n1) enabling --with-tcl yields to link errors on bin/pgtclsh and\ninterfaces/pl/tcl because Makefile insists on linking with libtcl7.6.0\ninstead on libtcl7.6\n\n2) enabling --with-openssl causes a co... |
[
{
"msg_contents": "I have completed a database internals presentation. The PDF is at:\n\n\thttp://candle.pha.pa.us/main/writings/internals.pdf\n\nI am interested in any comments. I need to add text to it. FYI, you\nwill find a system catalog chart in the presentation.\n\n-- \n Bruce Momjian ... |
[
{
"msg_contents": "\n\nAny suggestion why postmaster/postgres would think it had been compiled\nwith BLCKSZ 0? :\n\nroot@blue:/usr/local/pgsql# su postgres -c \"bin/postmaster -D\n/usr/local/pgsql/data \"\nDEBUG: Data Base System is starting up at Tue Feb 27 22:31:51 2001\nFATAL 2: database was initialized wi... |
[
{
"msg_contents": "hi, \ni have relation with 3 int's and 1 text :\n\\d newstexts\n Table \"newstexts\"\n Attribute | Type | Modifier\n-----------+---------+-------------------------------------------------\n id | integer | not null default nextval('newstex... |
[
{
"msg_contents": "Hi,\n\nI want to import from a .txt file, I usually use:\n\nCOPY noticies FROM '/home/teixi/_6tm_/_elbulli/premsai.txt' USING\nDELIMITERS '|' \\g\n\na) If table 'noticies' has a date row and is null on data file it claims:\n\tUnable to import date filed ''\n\nso how to admit date fields null?... |
[
{
"msg_contents": "Hi,\n\nTesting beta5 on unixware7 gives an error on int8 test while beta4 (I've\njust retested it) works ok regressions.diff follows:\n\nAlso, compiling with openssl give a compile error on\nsrc/backend/libpq/crypt.c; this error CAN be avoided by commenting out the\ndefinition of des_encrypt ... |
[
{
"msg_contents": "I've been looking at the WAL code and trying to figure out what the\n\"backup block\" mechanism is for. It appears that that can attach\nup to two disk pages of info to a WAL log record. If there are any\ncases where more than one page is really attached to a record, then\nWAL will crash an... |
[
{
"msg_contents": "I just took a close look at the COMP_CRC64 macro in xlog.c.\n\nThis isn't a 64-bit CRC. It's two independent 32-bit CRCs, one done\non just the odd-numbered bytes and one on just the even-numbered bytes\nof the datastream. That's hardly any stronger than a single 32-bit CRC;\nit's certainly... |
[
{
"msg_contents": "\n> I just took a close look at the COMP_CRC64 macro in xlog.c.\n> \n> This isn't a 64-bit CRC. It's two independent 32-bit CRCs, one done\n> on just the odd-numbered bytes and one on just the even-numbered bytes\n> of the datastream. That's hardly any stronger than a single \n> 32-bit CRC;... |
[
{
"msg_contents": "\n\n> -----Original Message-----\n> From: Hiroshi Inoue [mailto:Inoue@tpf.co.jp]\n> Sent: 01 March 2001 02:05\n> To: Patrick Welche\n> Cc: Tom Lane; charpent@bacbuc.dyndns.org; \n> pgsql-hackers@postgresql.org; pgsql-odbc@postgresql.org; \n> pam1001@cus.cam.ac.uk\n> Subject: Re: [ODBC] Re: [H... |
[
{
"msg_contents": "As the WAL stuff is currently constructed, the system will refuse to\nstart up unless the checkPoint field of pg_control points at a valid\ncheckpoint record in the WAL log.\n\nNow I know we write and fsync the checkpoint record before we rewrite\npg_control, but this still leaves me feeling ... |
[
{
"msg_contents": "7.1beta5 in contrib/retep:\n\nImplementation and README are both empty.\n\n-- \nOliver Elphick Oliver.Elphick@lfix.co.uk\nIsle of Wight http://www.lfix.co.uk/oliver\nPGP: 1024R/32B8FAA1: 97 EA 1D 47 72 3F 28 47 6B 7E 39 CC 56 E4 C1 ... |
[
{
"msg_contents": "The following files are empty:\n\n./src/test/bench/query21\n./src/test/bench/query22\n./src/test/bench/query24\n./src/test/bench/query25\n\nIs that intentional?\n\n(I see they have been that way for 4 years.)\n\n-- \nOliver Elphick Oliver.Elphick@lfix.co.uk\nIsl... |
[
{
"msg_contents": "On Fri, 2 Mar 2001, Jaruwan Laongmal wrote:\n\n> I had deleted a very large number of records out of my SQL table in order to\n> decrease the harddisk space. But after I use command 'ls -l\n> /usr/local/pgsql/data/base/', it is found that the size of concerning files\n> do not reduce due to ... |
[
{
"msg_contents": "I am *not* feeling good about pushing out an RC1 release candidate\ntoday.\n\nI've been going through the WAL code, trying to understand it and\ndocument it. I've found a number of minor problems and several major\nones (\"major\" meaning \"can't really fix without an incompatible file\nform... |
[
{
"msg_contents": "\n\n> From:\tBruce Momjian [SMTP:pgman@candle.pha.pa.us]\n> Sent:\tFriday, March 02, 2001 9:54 AM\n> To:\tTom Lane\n> Cc:\tpgsql-core@postgresql.org; pgsql-hackers@postgresql.org\n> Subject:\tRe: [HACKERS] WAL & RC1 status\n> \n> > Bruce Momjian <pgman@candle.pha.pa.us> writes:\n> > > Is ther... |
[
{
"msg_contents": "All,\n\nWe're pleased to announce the availablity of binary packaged versions of \nPostgreSQL 7.0.3 for Solaris 7.\n\nWe've set up a project on the GreatBridge.org open source project \nhosting site called \"PgSol,\" which we hope will be a focal point for \nSolaris packaging work. We're lo... |
[
{
"msg_contents": "Hello,\n\nWe noticed that after upgrading to 7.1beta[245] the execution time for\nsome often used queries went up by a factor of 2 or more. Considering\nthe early beta state I was not alarmed. But since I noticed that\nyesterday's snapshot still has the problem, I'd really like to tell you\na... |
[
{
"msg_contents": "> I've reported the major problems to the mailing lists\n> but gotten almost no feedback about what to do.\n\nI can't comment without access to code -:(\n\n> commit: 2001-02-26 17:19:57\n> 0/0059996C: prv 0/00599948; xprv 0/00000000; xid 0;\n> RM 0 info 00 len 32\n> checkpoint: redo 0/005999... |
[
{
"msg_contents": "Hi,\n\nDid I read allegations here a while ago that someone\nhad a multi-process version of pgbench? I've poked\naround the website and mail archives, but couldn't\nfind it.\n\nI have access to a couple of 4-CPU boxes, and reckon\nthat a single-process benching tool could well prove\na bottl... |
[
{
"msg_contents": "I posted about this some time back.\n\nMS have published an article on their website\nhttp://support.microsoft.com/support/kb/articles/Q128/8/09.asp\n\nreading\n\nACC: \"#Deleted\" Errors with Linked ODBC Tables\n\n----------------------------------------------------------------------------\n... |
[
{
"msg_contents": "Hi,\n\nI sometimes encountered SEGV errors in my test case\nwhen I canceled the execution.\nProbably it's due to the almost simultaneous arrival\nof multiple signals and the following patch seems to\nfix the bug. However I'm afraid that the change should\ncause another bug.\n\nComments ?\n\nR... |
[
{
"msg_contents": "Hello,all\n\nI use your a example of PL/pgSQL, but I found some errors when I execute \nthese codes. The details are followings,\n\nFirst, I create a exam.sql that includes these codes as followings,\n\nCREATE TABLE emp (\n empname text,\n salary int4,\n last_date datetime,\n last_use... |
[
{
"msg_contents": "People will have seen my post on problems with PostgreSQL ODBC driver and MS\nAccess 97.\n\nAccess 97 has some problems when a record is added that contains a primary\nkey field of type SERIAL. This has something to do with the fact that the\nvalue of the primary key is not actually generated... |
[
{
"msg_contents": "Hello,\n\nWe noticed that after upgrading to 7.1beta[245] the execution time for\nsome often used queries went up by a factor of 2 or more. Considering\nthe early beta state I was not alarmed. But since I noticed that\nyesterday's snapshot still has the problem, I'd really like to tell you\na... |
[
{
"msg_contents": " Hi\n I try this \"construction\" : select myfield from mytable where\nmyfield=-1\nAnd get this:\nERROR: Unable to identify an operator '=-' for types 'numeric' and\n'int4'\n You will have to retype this query using an explicit cast\n I don't lik this!\nVic\n\n",
"msg_date"... |
[
{
"msg_contents": "\n> Since there is not a separate WAL version stamp, introducing one now\n> would certainly force an initdb. I don't mind adding one if you think\n> it's useful; another 4 bytes in pg_control won't hurt anything. But\n> it's not going to save anyone's bacon on this cycle.\n\nYes, if initdb,... |
[
{
"msg_contents": "\n> Here is one of the queries, it takes about half a second on our computer\n> (PII 233 with 256MB RAM) to execute and returns typically 1-4 rows via\n> two index scans with high selectivity. So it looks to me that planning\n> time outwages execution time by far. 7.0 took about 0.15 \n> seco... |
[
{
"msg_contents": "> > One issue about too many checkpoints in pg_control, is that you then\n> > need to keep more logs, and in my pgbench tests the log space was a\n> > real issue, even for the one checkpoint case. I think a utility to\n> > recreate a busted pg_control would add a lot more stability, than one\... |
[
{
"msg_contents": "Consider the following scenario:\n\n1. A new transaction inserts a tuple. The tuple is entered into its\nheap file with the new transaction's XID, and an associated WAL log\nentry is made. Neither one of these are on disk yet --- the heap tuple\nis in a shmem disk buffer, and the WAL entry ... |
[
{
"msg_contents": "Sounds good.\n\n\n> Could we use some other letter for the pg_restore '-U' option? psql and\n> wrapper scripts use -U to select the user name to connect as (different\n> from -u), and I'd like to implement this sometime for the pg_dump tools as\n> well. How does -L (\"list\") sound?\n> \n> ... |
[
{
"msg_contents": "Trying example from:\n\nhttp://www.postgresql.org/devel-corner/docs/user/functions-datetime.html\n\npatrimoine=# SELECT EXTRACT(EPOCH FROM TIMESTAMP '2001-02-16 20:38:40');\nERROR: parser: parse error at or near \"epoch\"\npatrimoine=# select version();\n v... |
[
{
"msg_contents": "I guess these stubs are for accessing PG as a corba server...\n\nI'm trying to look to see if I can store CORBA objects inside PG, any\nideas...\n\nFranck Martin\nNetwork and Database Development Officer\nSOPAC South Pacific Applied Geoscience Commission\nFiji\nE-mail: franck@sopac.org <mailt... |
[
{
"msg_contents": "I have spent several days now puzzling over the corrupted WAL logfile\nthat Scott Parish was kind enough to send me from a 7.1beta4 crash.\nIt looks a lot like two different series of transactions were getting\nwritten into the same logfile. I'd been digging like mad in the WAL\ncode to try ... |
[
{
"msg_contents": "It used to be that if you had a pg_dump file without ACL checks, you\ncould load it as an unprivileged user. Now you get a ton of complaints\nabout those handy little \"update pg_class\" commands.\n\nI suppose this is only a cosmetic issue, but we're going to get\nquestions/complaints about ... |
[
{
"msg_contents": "I wonder if the new Tips at the bottom of email messages can be enabled\nfor users during their first 30 days of mailing list subscription, then\nnot appear?\n\n-- \n Bruce Momjian | http://candle.pha.pa.us\n pgman@candle.pha.pa.us | (610) 853-3000\n ... |
[
{
"msg_contents": "I have just sent to the pgsql-patches list a rather large set of\nproposed diffs for the WAL code. These changes:\n\n* Store two past checkpoint locations, not just one, in pg_control.\n On startup, we fall back to the older checkpoint if the newer one\n is unreadable. Also, a physical co... |
[
{
"msg_contents": "\n> 1. A new transaction inserts a tuple. The tuple is entered into its\n> heap file with the new transaction's XID, and an associated WAL log\n> entry is made. Neither one of these are on disk yet --- the heap tuple\n> is in a shmem disk buffer, and the WAL entry is in the shmem \n> WAL bu... |
[
{
"msg_contents": "\nThis just came to the webmaster mailbox:\n\n-------\nMost of the top banner links on http://jdbc.postgresql.org (like\nDocumentation, Tutorials, Resources, Development) throw up 404s if\nfollowed. Thought you ought to know.\n\nStill trying to find the correct driverClass/connectString for t... |
[
{
"msg_contents": "\n> > > 5. We will now run a new transaction with the same XID that was in use\n> > > before the crash. If that transaction commits, then we have a tuple on\n> > > disk that will be considered valid --- and should not be.\n> > \n> > I do not think this is true. Before any modification to a p... |
[
{
"msg_contents": "\n> >> 5. We will now run a new transaction with the same XID that was in use\n> >> before the crash. If that transaction commits, then we have a tuple on\n> >> disk that will be considered valid --- and should not be.\n> \n> > I do not think this is true. Before any modification to a page t... |
[
{
"msg_contents": "\n> >> Remove archdir from pg_control; it ought to be a GUC\n> >> parameter, not a special case (not that it's implemented \n> yet anyway).\n> \n> > Is archdir really a GUC parameter ?\n> \n> Why shouldn't it be? I see nothing wrong with changing it on-the-fly.\n\nYes, I think this is a good... |
[
{
"msg_contents": "\n> >> Hmm. Actually, what is written to the log is the *modified* page not\n> >> its original contents.\n> > Well, that sure is not what was discussed on the list for implementation !!\n> > I thus really doubt above statement.\n> \n> Read the code.\n\nOk, sad.\n\n> \n> > Each page about to ... |
[
{
"msg_contents": "\n> After thinking about this a little, I believe I see why Vadim did it\n> the way he did. Suppose we tried to make the code sequence be\n> \n> \tobtain write lock on buffer;\n> \tXLogOriginalPage(buffer); // copy page to xlog if first since ckpt\n> \tmodify buffer;\n> \tXLogInsert(xlog e... |
[
{
"msg_contents": "Why do I get a message about COBOL when doing a gmake install and what\nam I supposed to do about it?\n\nThis is on a Solaris 2.7 system.\n\nThanks,\n\nJarom\n\nP.S. The make was successful.\n\ngmake[3]: `SUBSYS.o' is up to date.\ngmake[3]: Leaving directory\n`/data/postgresql-7.0.3/src/back... |
[
{
"msg_contents": "I like this idea too. How about TIP #1: Don't 'kill -9' the postmaster ;-)\n\nMike Mascari\nmascarm@mascari.com\n\n-----Original Message-----\nFrom:\tThe Hermit Hacker [SMTP:scrappy@hub.org]\nSent:\tTuesday, March 06, 2001 1:57 PM\nTo:\tAndrew McMillan\nCc:\tPostgreSQL-development\nSubject:\t... |
[
{
"msg_contents": "I was trying to add a column to a table and fill it but ran into a big\nerror. Apparently now Postgres can't open this table to vacuum or to\nselect although it does show up when I ask psql to describe the table\n(i.e. db01=# /d center_out_analog_proc).\n\nI'm using Postgres 7.0.3 on a PII/40... |
[
{
"msg_contents": "Greetings,\n\nI wrote a few simple programs to log Apache access_log entries to pg. If \nthis is something anyone would be interested in or if there is someplace I \ncan submit these to, please let me know.\n\nThanks,\nMatthew\n\n",
"msg_date": "Tue, 06 Mar 2001 17:52:21 -0500",
"msg... |
[
{
"msg_contents": "\nWhat about (optionally) printing the type of the column data?\n\ni.e:\n\n\n\n io | tu | tipo | data \n int | int | int2 | date \n--------+-------+------+------------\n 102242 | 26404 | 1203 | 2000-11-22 \n(1 row)\n\n\n",
"msg_date": "Wed, 7 Mar 2001 01:15:49 +010... |
[
{
"msg_contents": "\nI am writing an Emacs based navigation/editing tool. I would like to have the\nbackend parse a query, EXPLAIN VERBOSE it .... I want to know for every non\nfunctional column the source (table/attribute). How to interpret the parse tree?\n\n",
"msg_date": "Wed, 7 Mar 2001 06:23:03 +0100"... |
[
{
"msg_contents": "Hi!\n\nSnow in New York -> I'm arrived only today.\nReading mail...\n\nVadim\n\n\n",
"msg_date": "Tue, 6 Mar 2001 21:57:24 -0800",
"msg_from": "\"Vadim Mikheev\" <vmikheev@sectorbase.com>",
"msg_from_op": true,
"msg_subject": "I'm back"
}
] |
[
{
"msg_contents": "> This isn't a 64-bit CRC. It's two independent 32-bit CRCs, one done\n> on just the odd-numbered bytes and one on just the even-numbered bytes\n> of the datastream. That's hardly any stronger than a single 32-bit CRC;\n\nI believe that the longer data the more chance to get same CRC/hash\n... |
[
{
"msg_contents": "\n> Could GUC parameters be changed permanently e.g. by SET command ?\n> \n> For example,\n> 1) start postmaster\n> 2) set archdir to '....'\n> 3) shutdown postmaster\n\nI thought the intended way to change a GUC parameter permanently was to \nedit data/postgresql.conf . No ?\n\nAndreas\n",
... |
[
{
"msg_contents": "\n> > I do not however see how the current solution fixes the original problem,\n> > that we don't have a rollback for index modifications.\n> > The index would potentially point to an empty heaptuple slot.\n> \n> How? There will be an XLOG entry inserting the heap tuple before the\n> XLOG e... |
[
{
"msg_contents": "\n> > Before commit or rollback the xlog is not flushed to disk, thus you can loose\n> > those xlog entries, but the index page might already be on disk because of\n> > LRU buffer reuse, no ?\n> \n> No. Buffer page is written to disk *only after corresponding records are flushed\n> to log* (W... |
[
{
"msg_contents": "> I have just sent to the pgsql-patches list a rather large set of\n\nPlease send it to me directly - pgsql-patches' archieve is dated by Feb -:(\n\n> proposed diffs for the WAL code. These changes:\n> \n> * Store two past checkpoint locations, not just one, in pg_control.\n> On startup, w... |
[
{
"msg_contents": "> I have spent several days now puzzling over the corrupted WAL logfile\n> that Scott Parish was kind enough to send me from a 7.1beta4 crash.\n> It looks a lot like two different series of transactions were getting\n> written into the same logfile. I'd been digging like mad in the WAL\n> co... |
[
{
"msg_contents": "\n> Nevertheless, subj is rised. BTW, does anybody know results of kill -9\n> in Oracle/Informix/etc? Just curious -:)\n\nInformix has no problem with it. Oracle dba's fear it, to say the least.\n\nAndreas \n",
"msg_date": "Wed, 7 Mar 2001 11:25:20 +0100 ",
"msg_from": "Zeugswetter A... |
[
{
"msg_contents": "> Consider the following scenario:\n> \n> 1. A new transaction inserts a tuple. The tuple is entered into its\n> heap file with the new transaction's XID, and an associated WAL log\n> entry is made. Neither one of these are on disk yet --- the heap tuple\n> is in a shmem disk buffer, and th... |
[
{
"msg_contents": "> The point is to make the allocation of XIDs and OIDs work the same way.\n> In particular, if we are forced to reset the XLOG using what's stored in\n> pg_control, it would be good if what's stored in pg_control is a value\n> beyond the last-used XID/OID, not a value less than the last-used ... |
[
{
"msg_contents": "Zeugswetter Andreas SB <ZeugswetterA@wien.spardat.at> wrote:\n>\n> In short I do not think that the current implementation of\n> \"physical log\" does what it was intended to do :-(\n\nHm, wasn't it handling non-atomic disk writes, Andreas?\nAnd for what else \"physical log\" could be used?\n... |
[
{
"msg_contents": "> On third thought --- we could still log the original page contents and\n> the modification log record atomically, if what were logged in the xlog\n> record were (essentially) the parameters to the operation being logged,\n> not its results. That is, make the log entry before you start doing... |
[
{
"msg_contents": "\n> > In short I do not think that the current implementation of\n> > \"physical log\" does what it was intended to do :-(\n> \n> Hm, wasn't it handling non-atomic disk writes, Andreas?\n\nYes, but for me, that was only one (for me rather minor) issue.\nI still think that the layout of Postgr... |
[
{
"msg_contents": "Is anyone on this list in Hannover for CeBit? Maybe we could arrange a\nmeeting.\n\nMichael\n-- \nMichael Meskes\nMichael@Fam-Meskes.De\nGo SF 49ers! Go Rhein Fire!\nUse Debian GNU/Linux! Use PostgreSQL!\n",
"msg_date": "Wed, 7 Mar 2001 13:20:02 +0100",
"msg_from": "Michael Meskes <me... |
[
{
"msg_contents": "hey friends can u give me a master password so that i can create user in the postgresql.\nthanx\nShailendra Kumar\n\n\n\n\n\n\n\n\nhey friends can u give me a master password so that \ni can create user in the postgresql.\nthanx\nShailendra Kumar",
"msg_date": "Wed, 7 Mar 2001 18:44:24 +0... |
[
{
"msg_contents": "\n> > > Hm, wasn't it handling non-atomic disk writes, Andreas?\n> > \n> > Yes, but for me, that was only one (for me rather minor) issue.\n> > I still think that the layout of PostgreSQL pages was designed to\n> > reduce the risc of a (heap) page beeing inconsistent because it is \n> > only ... |
[
{
"msg_contents": "I have started coding a PostgreSQL performance monitor. It will be like\ntop, but allow you to click on a backend to see additional information.\n\nIt will be written in Tcl/Tk. I may ask to add something to 7.1 so when\na backend receives a special signal, it dumps a file in /tmp with some... |
[
{
"msg_contents": "> > > What I've thought is to implement a new command to\n> > > change archdir under WAL's control.\n> > > If it's different from Vadim's plan I don't object.\n> > \n> > Actually, I have no concrete plans for archdir yet - this\n> > one is for WAL based BAR we should discuss in future.\n> > S... |
[
{
"msg_contents": "> > > I have just sent to the pgsql-patches list a rather large set of\n> >\n> > Please send it to me directly - pgsql-patches' archieve is \n> dated by Feb -:(\n> \n> Huh?\n> \n> http://www.postgresql.org/mhonarc/pgsql-patches/2001-03/index.html\n\nBut there was nothing there yesterday -:)\n... |
[
{
"msg_contents": "> > I feel that the fact that\n> > \n> > WAL can't help in the event of disk errors\n> > \n> > is often overlooked.\n> \n> This is true in general. But, nevertheless, WAL can be written to\n> protect against predictable disk errors, when possible. Failing to\n> write a couple of disk blocks... |
[
{
"msg_contents": "> > But what can be done if fsync returns before pages flushed?\n> No, it won't. When fsync returns, data is promised by the OS to be on\n> disk.\n\nSeems you didn't follow discussions about this issue.\n\nVadim\n",
"msg_date": "Wed, 7 Mar 2001 13:04:20 -0800 ",
"msg_from": "\"Mikheev... |
[
{
"msg_contents": "> It is possible to build a logging system so that you mostly don't care\n> when the data blocks get written; a particular data block on disk is \n> considered garbage until the next checkpoint, so that you \n\nHow to know if a particular data page was modified if there is no\nlog record for ... |
[
{
"msg_contents": "I was going to implement the signal handler like we do with Cancel,\nwhere the signal sets a flag and we check the status of the flag in\nvarious _safe_ places.\n\nCan anyone think of a better way to get information out of a backend?\n\n-- \n Bruce Momjian | http://ca... |
[
{
"msg_contents": "Hi:\n\nWhen trying to pg_dump a database as the postgres user or as any other user I got this error:\n\ndumpProcLangs(): handler procedure for language plpgsql not found\n\nwhat's going on ?\n\nthe command to dump this is: pg_dump -x alyma > alyma.dat.sql\n\nThank you in advanced.\n\n\n--\nI... |
[
{
"msg_contents": "I like the idea of updating shared memory with the performance statistics, \ncurrent query execution information, etc., providing a function to fetch \nthose statistics, and perhaps providing a system view (i.e. pg_performance) \nbased upon such functions which can be queried by the administr... |
[
{
"msg_contents": "> > But what can be done if fsync returns before pages flushed?\n> \n> When you write out critical information, you keep earlier versions of\n> it. On startup, if the critical information is corrupt, you use the\n> earlier versions of it. This helps protect against the scenario I\n> mention... |
[
{
"msg_contents": "> >> * Store two past checkpoint locations, not just one, in pg_control.\n> >> On startup, we fall back to the older checkpoint if the newer one\n> >> is unreadable. Also, a physical copy of the newest \n> >> checkpoint record\n> \n> > And what to do if older one is unreadable too?\n> > (Isn... |
[
{
"msg_contents": "> > If there is no pg_control or it's corrupted or points to\n> > unexistent/corrupted checkpoint record then scan logs from\n> > newest to oldest one till we find last valid checkpoint record\n> > or oldest valid log record and than redo from there.\n> \n> And how well will that approach wor... |
[
{
"msg_contents": "> 1) WAL\n> We have buffer manager, ok. So why not to use WAL as part of \n> it and don't log INSERT/UPDATE/DELETE xlog records but directly\n> changes into buffer pages ? When someone dirties page it has to\n> inform bmgr about dirty region and bmgr would formulate xlog record.\n> The record... |
[
{
"msg_contents": "Hi!\n\nI am student of system engineering and I carried out a work with\nPostgreSQL in which I should implement inclusion dependencies using\nrules. \n\nDuring the development of this work, I met with a problem that I solved\nadding the Postgres the possibility to disable (deactivate) a rule\... |
[
{
"msg_contents": "Hi guys,\n\nI've been looking through the memory management system today.\n\nWhen a request is made for a memory memory chunk larger than\nALLOC_CHUNK_LIMIT, AllocSetAlloc() uses malloc() to give the request its\nown block. The result is tested by AllocSetAlloc() to see if the memory\nwas all... |
[
{
"msg_contents": "I am looking to beef up a PostgreSQL database by moving it to a Sun\nEnterprise or an Alpha ES-40 or some other multi-CPU platform. My\nquestions are;\n\n - What suggestions do people have for a good PostgreSQL platform.\n - How well does PostgreSQLtake advantage of multiple CPUs?\n\nThank... |
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