Question:
I started the GoldenGate
replicat in target then I get the OGG-01296 error below:
OGG-01296 Error mapping from
xxx to yyy
How do I fix the OGG-01296 error?
Answer:
The OGG-01296 error is caused my several things:
- Missing indexes:
We have created all the indexes on the target side (Replicat
database) for the table.
- Non matching table columns:
The columns must match in both tables (source and target)
- Missing PK constraints:
All constraints must match on target and source.
In sum, the OGG-01296 is when
there is a mismatch between the structure of the tables in
source and target, making the mapping fail. The
OGG-01296 is also fixed by adding TRANDATA for the table for
the keycols. You can also fix the OGG-01296 by the source
for primary key or unique columns and add the same to
replicat param file and restart it
GoldenGate builds a pseudo key out of
the entire row in the absence of a declared PK or UI, so for
the source, the key is all the table columns.
For the target, the key becomes all
of the target columns, including the ones that are only in
the target and not in the source. So when an Update or
Delete DML comes through GoldenGate from the source, there's
no values for those last few columns in the target to
satisfy the WHERE condition because those columns don't
exist on the source.
If your source and target tables are
different structures, you should use SOURCEDEFS instead of
ASSUMETARGETDEFS, and you will need a DEFSFILE from the
source and placed in the target
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