6.12.12 Determining the size of the user logs that are output during execution of the adbunarchivechunk command (variable max_user_log)
The size of the user log data that is output when the adbunarchivechunk command is executed is the same as the size of user log data that is output in the following case:
-
When the adbimport command is executed with the -b option specified and the -d option omitted for an archivable multi-chunk table
The data in the chunk to be unarchived is used for input.
Determine the size of the user logs that are output during the execution of the adbimport command according to the explanation in 6.12.4 Determining the size of the user logs that are output during execution of the adbimport command (variable max_user_log).
Note that if you execute the adbunarchivechunk command for multiple chunks, determine the value based on the chunk that uses most segments among all chunks.
Also, if you determine the number of segments to be used, execute the adbdbstatus command with the -c archivechunk option specified to output the summary information about archived chunks. You can check the number of segments from the following output items:
-
Unarchive_table_size
Size of segments that were used to store a table in the chunk before being archived (bytes)
-
Unarchive_index_size
Size of segments that were used to store indexes in the chunk before being archived (bytes)