logminer | An object oriented logger for more organised log tracking
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kandi X-RAY | logminer Summary
An object oriented logger for more organised log tracking.
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QUESTION
We recently started the process of continuous migration (initial load + CDC) from an Oracle database on RDS to S3 using AWS DMS. The DB is using LogMiner.
the problem that we have detected is that the CDC records of type Update only contain the data that was updated, leaving the rest of the fields empty, so the possibility of simply taking as valid the record with the maximum timestamp value is lost.
Does anyone know if this can be changed or in what part of the DMS or RDS configuration to touch so that the update contains the information of all the fields of the record?
Thanks in advance.
...ANSWER
Answered 2020-Nov-23 at 23:27Supplemental Logging at table level may increase what is logged, but that will also increase total volume of log data written for a given workload.
Many Log Based Data Replication products from various vendors require additional supplemental logging at the table level to ensure the full row data for updates with before and after change data is written to the database logs.
re: https://docs.oracle.com/database/121/SUTIL/GUID-D857AF96-AC24-4CA1-B620-8EA3DF30D72E.htm#SUTIL1582
Pulling data through LogMiner may be possible, but you will need to evaluate if it will scale with the data volumes you need.
QUESTION
Sorry if this has been asked before. I am hoping to win some time this way :)
What would be the best way to unload delta data from a DB2 source database that has been optimized for OLTP? E.g. by analyzing the redo files, as with Oracle Logminer?
Background: we want near-realtime ETL, and a full table unload every 5 minutes is not feasible.
this is more about the actual technology behind accessing DB2 than about determining the deltas to load into the (Teradata) target.
Ie, we want to unload all records since last unload timestamp.
many many thanks!
...ANSWER
Answered 2019-Nov-10 at 16:39Check out IBM InfoSphere Data Replication.
Briefly:
There are 3 replication solutions: CDC, SQL & Q replication.
All 3 solutions read Db2 transaction logs using the same db2ReadLog API, which anyone may use for custom implementation. All other things like staging & transformation of the data changes got from logs, transportation and target application of data are different for each method.
QUESTION
I have extracted data from Oracle Logminor and u need convert it into useful sql. below is data
...ANSWER
Answered 2019-Aug-28 at 19:08I'm not sure why you're extracting the raw values, but those are the binary representation of the Oracle number datatype, which does not correspond to any data type in Java.
You can see where this value is coming from by using the UTL_RAW package:
QUESTION
I'm trying migrate a Oracle database to AWS RDS using AWS DMS, however the task is failing:
...ANSWER
Answered 2018-May-23 at 04:542018-05-18T13:58:09 [SOURCE_CAPTURE ]E: Minimal database supplemental logging level is not enabled [1020418] (oracle_endpoint_imp.c:1009)
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