To extract userlogs from the same location on all instances, specify the extraction start point as follows:

1. Run the pgx_userlog_control command in init mode on the primary to initialize the userlog extraction control file. This will allow extraction to start from the userlog output on the next boot.

2. On all standbys, run the pgx_userlog_control command in set mode with the -l option to initialize the userlog extraction control file. In this case, for the -l option, specify the log location that was output to the standard output by the pgx_userlog_control command in step 1. This ensures that the primary and the extraction start point match.

For information about the pgx_userlog_control command, refer to "Appendix C pgx_userlog_control Command".