Hi-
Cache : A memory area where frequently accessed data can be stored for rapid access.
SXI_CACHE: A memory area where the information about the design and configuration objects of the J2EE stack is stored in temporary ABAP data dictionary tables. The integration engine uses it at the run time for accessing the appropriate design and configuration objects of J2EE stack.
Two types of cache refresh:
1.Delta Cache Refresh: Any new objects that have been created/modified during the design/configuration activities are inserted into the temporary database tables when we use delta cache refresh option.
2.Full Cache Refresh: All entries in temporary cache tables are deleted and a background program for inserting the complete information about all the design/configuration objects.
Many actions require you to access System Landscape Directory content from the Integration Builder. To optimize performance, this content is loaded into a cache so that the System Landscape Directory does not have to be accessed directly each time that System Landscape Directory content is required.
However, this cache is not automatically updated if changes are made to the content of the System Landscape Directory. For this reason, SAP recommends that you delete the System Landscape Directory cache if changes have been made to content in the System Landscape Directory. The cache is then filled each time that the System Landscape Directory is accessed. If you log on to the Integration Builder after you have made a change in the SLD, you do not need to delete the SLD cache.
To clear the SLD cache, from the Integration Builder main menu, choose Environment --> Delete Cache for SLD Data
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