NP, yeah I've used bulk binds and they're great but I wish they offered conditional logic within the forall statement. If I could perform conditional logic or assignment of values to variables within the forall it'd really make my life easier.
In my situation a merge select will perform as well if not better than a bulk bind. At least I think this is the case:) Thx for the links and help, Dave On Wed, Jun 11, 2003 at 05:29:42PM -0700, [EMAIL PROTECTED] wrote: > Sorry, guess I wasn't clear. > > Bulk loading is done with PL/SQL, not sql loader. > > I should have referred to 'bulk binds'. > > Here are some URL's that may help. > > http://download-east.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg10pck.htm#37506 > > http://download-east.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg10pck.htm#20419 > > http://download-east.oracle.com/docs/cd/B10501_01/appdev.920/a96624/05_colls.htm#28332 > > Jared > > > > > > > David Turner <[EMAIL PROTECTED]> > 06/11/2003 05:02 PM > > > To: [EMAIL PROTECTED] > cc: [EMAIL PROTECTED] > Subject: Re: applying transactions > > > Thx Jared, > > But I don't see how I could use loader to perform a delete. Sad to say but > this > isn't the typical load that I'm used to.. The load files contain inserts > and > deletes. I could set up a temporary table to load into which has a trigger > > fire on delete to remove rows from the destination table and on an insert > inserts > the row into the destination. But, I would think this would be about as > slow because > the trigger would have to find each record for deleting. > > I also needed to add that each insert and delete was an entire record with > a flag > showing the transaction type (I= insert O=out/delete). > > > I think I have a cool solution though. Here's an example : > > This is the table that contains the transactions > create table test1(id number(4),trans_no number(4), trans char(1), field > varchar2(8)); > > Here are some example transactions: > > insert into test1 values(1,101,'I','A'); > insert into test1 values(2,102,'I','A'); > insert into test1 values(3,103,'I','A'); > insert into test1 values(4,104,'I','A'); > insert into test1 values(5,105,'I','A'); > > insert into test1 values(1,106,'0','X'); > insert into test1 values(2,107,'O','X'); > insert into test1 values(3,108,'0','X'); > insert into test1 values(4,109,'I','B'); > insert into test1 values(5,110,'I','B'); > > insert into test1 values(5,115,'0','X'); > insert into test1 values(4,114,'I','C'); > insert into test1 values(3,113,'I','C'); > insert into test1 values(2,112,'I','C'); > insert into test1 values(1,111,'I','C'); > > Here is the select to get the last change performed on a row > > select a.id,a.trans_no, a.trans, a.field > from > test1 a, > (select id,max(trans_no) trans_no from test1 group by id) b > where > a.trans_no=b.trans_no; > > > Here would be the result: > > ID LINE_NO T FIELD > ---------- ---------- - -------- > 1 111 I C > 2 112 I C > 3 113 I C > 4 114 I C > 5 115 0 X > > > I then merge this result set with the destination table. I haven't found > any > problems yet and I'm fairly certain I'll hit around 900 trans per sec. > > Thanks, > Dave > > On Wed, Jun 11, 2003 at 04:43:32PM -0700, [EMAIL PROTECTED] wrote: > > If you're on 8i+ you can use bulk loading. It could save you a > > lot of time on large loads such as this. > > > > Jared > > > > > > > > > > > > > > David Turner <[EMAIL PROTECTED]> > > Sent by: [EMAIL PROTECTED] > > 06/11/2003 04:04 PM > > Please respond to ORACLE-L > > > > > > To: Multiple recipients of list ORACLE-L > <[EMAIL PROTECTED]> > > cc: > > Subject: applying transactions > > > > > > I've got a project where I get daily log files with inserts and deletes > to > > keep a > > table current. I've set up an external table which contains the logs and > a > > stored > > procedure reads from it and inserts or deletes from the table > accordingly. > > Note > > one insert or delete per iteration. They're not bulked. > > > > The problem is it is running way too slowly. I'm running about 300 > > transactions > > a second and believe the slow time has to do with context switching. > Merge > > won't > > work because it can't handle a record being changed multiple times in > the > > transaction log/external table. When I run inserts only I'm inserting > > about 5000 > > rows a second, but understand the deletes would slow it down > considerably. > > > > > > Keep in mind all the records have to be executed sequentially because > > we're just > > applying a log file. > > > > Right now I'm trying to figure out a scheme to perform all the inserts > > that don't > > exist in the destination table, then all deletes, and then the remaining > > > inserts > > but thought I should just send an email to see if someone had a better > way > > of > > getting me the transaction rate I need, about 1000 rec/s. > > > > Thanks, Dave > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.net > > -- > > Author: David Turner > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > San Diego, California -- Mailing list and web hosting services > > --------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB ORACLE-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > > > > > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: David Turner INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
