Swapping synonyms between tow tables every week
Hi AIl,
I have two tables, A and B. I need to switch loading these tables. If we load A today, the following
week we would have to load B.
There is a public synonym "C" that sits on top of these two tables.
1) To Find out which table is in use right now..
SELECT *
FROM ALL_SYNONYMS
WHERE SYNONYM_NAME = "C"
2) Truncate opposite table/Drop opposite table
3) Load data into opposite table
4) Validate by doing a count * on the table to check the rows loaded.
5) Finally, switch synonym
Can this be achieved using shell script or PL/SQL?
Please advice.A little eheadstart would be great.
Message was edited by:
CrackerJack
Speaking about partition exchange googling with partition exchange will give you plenty of results and some of the first 10 even contain examples with syntax etc.
Speaking of possible gap after base table truncate and before finish of data loading - actually this is question to you - are you ready to accept the fact that there will be time gap (as long as your data load runs) without any data in your base table and without possibility to get correct results out of it? With partition exchange and synonym swap this gap decreases to absolute minimum and most probably is only theoretical. Also keep in mind that partition exchange needs licenced Enterprise Edition and Partitioning option. This could be quite $$$ consuming.
Speaking about another approaches it is not clear what you do not understand? Probably you can clarify.
Gints Plivna
http://www.gplivna.eu
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Initial load failing between identical tables. DEFGEN skewed and fixable?
Initial load failing between identical tables. DEFGEN skewed and fixable?
Error seen:
2013-01-28 15:23:46 WARNING OGG-00869 [SQL error 0 (0x0)][HP][ODBC/MX Driver] DATETIME FIELD OVERFLOW. Incorrect Format or Data. Row: 1 Column: 11.
Then compared the discard record against a select * on the key column.
Mapping problem with insert record (target format)...
**** Comparing Discard contents to Select * display
ABCHID = 3431100001357760616974974003012 = 3431100001357760616974974003012
*!!! ABCHSTEPCD = 909129785 <> 9 ???*
ABCHCREATEDDATE = 2013-01-09 13:43:36 = 2013-01-09 13:43:36
ABCHMODIFIEDDATE = 2013-01-09 13:43:36 =2013-01-09 13:43:36
ABCHNRTPUSHED = 0 = 0
ABCHPRISMRESULTISEVALUATED = 0 = 0
SABCHPSEUDOTERM = 005340 = 005340
ABCHTERMID = TERM05 = TERM05
ABCHTXNSEQNUM = 300911112224 = 300911112224
ABCHTIMERQSTRECVFROMACQR = 1357799914310 = 1357799914310
*!!! ABCTHDATE = 1357-61-24 00:43:34 <> 2013-01-09 13:43:34*
ABCHABCDATETIME = 2013-01-09 13:43:34.310000 = 2013-01-09 13:43:34.310000
ABCHACCOUNTABCBER =123ABC = 123ABC
ABCHMESSAGETYPECODE = 1210 = 1210
ABCHPROCCDETRANTYPE = 00 = 00
ABCHPROCCDEFROMACCT = 00 = 00
ABCHPROCCDETOACCT = 00 = 00
ABCHRESPONSECODE = 00 = 00
…. <snipped>
Defgen comes out same when run against either table.
Also have copied over and tried both outputs from DEFGEN.
+- Defgen version 2.0, Encoding ISO-8859-1
* Definitions created/modified 2013-01-28 15:00
* Field descriptions for each column entry:
* 1 Name
* 2 Data Type
* 3 External Length
* 4 Fetch Offset
* 5 Scale
* 6 Level
* 7 Null
* 8 Bump if Odd
* 9 Internal Length
* 10 Binary Length
* 11 Table Length
* 12 Most Significant DT
* 13 Least Significant DT
* 14 High Precision
* 15 Low Precision
* 16 Elementary Item
* 17 Occurs
* 18 Key Column
* 19 Sub Data Type
Database type: SQLMX
Character set ID: ISO-8859-1
National character set ID: UTF-16
Locale: en_EN_US
Case sensitivity: 14 14 14 14 14 14 14 14 14 14 14 14 11 14 14 14
Definition for table RT.ABC
Record length: 1311
Syskey: 0
Columns: 106
ABCHID 64 34 0 0 0 0 0 34 34 34 0 0 32 32 1 0 1 3
ABCHSTEPCD 132 4 39 0 0 0 0 4 4 4 0 0 0 0 1 0 0 0
ABCHCREATEDDATE 192 19 46 0 0 0 0 19 19 19 0 5 0 0 1 0 0 0
ABCHMODIFIEDDATE 192 19 68 0 0 0 0 19 19 19 0 5 0 0 1 0 0 0
ABCHNRTPUSHED 130 2 90 0 0 0 0 2 2 2 0 0 0 0 1 0 0 0
ABCHPRISMRESULTISEVALUATED 130 2 95 0 0 0 0 2 2 2 0 0 0 0 1 0 0 0
ABCHPSEUDOTERM 0 8 100 0 0 0 0 8 8 8 0 0 0 0 1 0 0 0
ABCTERMID 0 16 111 0 0 0 0 16 16 16 0 0 0 0 1 0 0 0
ABCHTXNSEQNUM 0 12 130 0 0 0 0 12 12 12 0 0 0 0 1 0 0 0
ABCHTIMERQSTRECVFROMACQR 64 24 145 0 0 0 0 24 24 24 0 0 22 22 1 0 0 3
ABCTHDATE 192 19 174 0 0 0 0 19 19 19 0 5 0 0 1 0 0 0
ABCHABCDATETIME 192 26 196 0 0 1 0 26 26 26 0 6 0 0 1 0 0 0
ABCHACCOUNTABCER 0 19 225 0 0 1 0 19 19 19 0 0 0 0 1 0 0 0
ABCHMESSAGETYPECODE 0 4 247 0 0 1 0 4 4 4 0 0 0 0 1 0 0 0
ABCHPROCCDETRANTYPE 0 2 254 0 0 1 0 2 2 2 0 0 0 0 1 0 0 0
ABCHPROCCDEFROMACCT 0 2 259 0 0 1 0 2 2 2 0 0 0 0 1 0 0 0
ABCHPROCCDETOACCT 0 2 264 0 0 1 0 2 2 2 0 0 0 0 1 0 0 0
ABCHRESPONSECODE 0 5 269 0 0 1 0 5 5 5 0 0 0 0 1 0 0 0
… <snipped>
The physical table shows a PACKED REC 1078
And table invoke is:
-- Definition of table ABC3.RT.ABC
-- Definition current Mon Jan 28 18:20:02 2013
ABCHID NUMERIC(32, 0) NO DEFAULT HEADING '' NOT
NULL NOT DROPPABLE
, ABCHSTEPCD INT NO DEFAULT HEADING '' NOT NULL NOT
DROPPABLE
, ABCHCREATEDDATE TIMESTAMP(0) NO DEFAULT HEADING '' NOT
NULL NOT DROPPABLE
, ABCHMODIFIEDDATE TIMESTAMP(0) NO DEFAULT HEADING '' NOT
NULL NOT DROPPABLE
, ABCHNRTPUSHED SMALLINT DEFAULT 0 HEADING '' NOT NULL NOT
DROPPABLE
, ABCHPRISMRESULTISEVALUATED SMALLINT DEFAULT 0 HEADING '' NOT NULL NOT
DROPPABLE
, ABCHPSEUDOTERM CHAR(8) CHARACTER SET ISO88591 COLLATE
DEFAULT NO DEFAULT HEADING '' NOT NULL NOT DROPPABLE
, ABCHTERMID CHAR(16) CHARACTER SET ISO88591 COLLATE
DEFAULT NO DEFAULT HEADING '' NOT NULL NOT DROPPABLE
, ABCHTXNSEQNUM CHAR(12) CHARACTER SET ISO88591 COLLATE
DEFAULT NO DEFAULT HEADING '' NOT NULL NOT DROPPABLE
, ABCHTIMERQSTRECVFROMACQR NUMERIC(22, 0) NO DEFAULT HEADING '' NOT
NULL NOT DROPPABLE
, ABCTHDATE TIMESTAMP(0) NO DEFAULT HEADING '' NOT
NULL NOT DROPPABLE
, ABCHABCDATETIME TIMESTAMP(6) DEFAULT NULL HEADING ''
, ABCHACCOUNTNABCBER CHAR(19) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
, ABCHMESSAGETYPECODE CHAR(4) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
, ABCHPROCCDETRANTYPE CHAR(2) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
, ABCHPROCCDEFROMACCT CHAR(2) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
, ABCHPROCCDETOACCT CHAR(2) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
, ABCHRESPONSECODE CHAR(5) CHARACTER SET ISO88591 COLLATE
DEFAULT DEFAULT NULL HEADING ''
…. Snipped
I suspect that the fields having subtype 3 just before the garbled columns is a clue, but not sure what to replace with or adjust.
Any and all help mighty appreciated.Worthwhile suggestion, just having difficulty applying.
I will tinker with it more. But still open to more suggestions.
=-=-=-=-
Oracle GoldenGate Delivery for SQL/MX
Version 11.2.1.0.1 14305084
NonStop H06 on Jul 11 2012 14:11:30
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
Starting at 2013-01-31 15:19:35
Operating System Version:
NONSTOP_KERNEL
Version 12, Release J06
Node: abc3
Machine: NSE-AB
Process id: 67895711
Description:
** Running with the following parameters **
2013-01-31 15:19:40 INFO OGG-03035 Operating system character set identified as ISO-8859-1. Locale: en_US_POSIX, LC_ALL:.
Comment
Comment
REPLICAT lodrepx
ASSUMETARGETDEFS
Source Context :
SourceModule : [er.init]
SourceID : [home/ecloud/sqlmx_mlr14305084/src/app/er/init.cpp]
SourceFunction : [get_infile_params]
SourceLine : [2418]
2013-01-31 15:19:40 ERROR OGG-00184 ASSUMETARGETDEFS is not supported for SQL/MX ODBC replicat.
2013-01-31 15:19:45 ERROR OGG-01668 PROCESS ABENDING. -
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