ODI uses Goldengate for incremental data capture
Last month, oracle released odi the latest version 10.1.3.6_02, which increased for the adoption of goldengate get the Knowledge module of the increment of the source database, so that when the system needs the real-time data Warehouse, we extract the incremental data from the source database, we can take advantage of goldengate The is extracted from the log of the database, avoiding the effect on the source database system, previously using streams or logminer Extract the increment, you need to deploy stream in the source database, you need to dba permissions, many administrators have a resistance to emotions, fear of affecting production systems, when extracting increments in the source database, there is no need to deploy anything on the source database system, it requires only one ordinary user to fetch the metadata from the database, at least , resource , select Any table ,
- 1. We install the goldengateon the source system, please refer to the previous blogfor specific installation steps.
- 2. to import the appropriate knowledge module on the machine where the ODI resides, download the relevant software and documentation on the Oracle Support website.
- 3. like the CDC in other ODI , add Log table, configure the relevant parameters of knowledge module,ODI will automatically generate the relevant goldengate configuration file.
- 4. when Goldengate at the source, two data is stored in the temporary storage area of the ODI (stagingareas), and one is the exact same data as the source, Another is the temporary tables and views that were originally deployed on the source database, andgoldenate will extract the incremental data from the source-side logs and update the two sets of tables in the staging area, so that the extraction of the incremental data is complete.
5. ODI uses a mechanism that is consistent with other extraction methods to convert and load incremental data.
ODI uses Goldengate for incremental data capture