I'm not sure who is supposed to be able to read this sort of stuff: Latest checkpoint's NextXID: 0/7575 Latest checkpoint's NextOID: 49152 Latest checkpoint's NextMultiXactId: 7 Latest checkpoint's NextMultiOffset: 13 Latest checkpoint's oldestXID: 1265 Latest checkpoint's oldestXID's DB: 1 Latest checkpoint's oldestActiveXID: 0 Latest checkpoint's oldestMultiXid: 1 Latest checkpoint's oldestMulti's DB: 1
Note that these symbols don't even correspond to the actual symbols used in the source code in some cases. The comments in the pg_control.h header file use much more pleasant terms, which when put to use would lead to output similar to this: Latest checkpoint's next free transaction ID: 0/7575 Latest checkpoint's next free OID: 49152 Latest checkpoint's next free MultiXactId: 7 Latest checkpoint's next free MultiXact offset: 13 Latest checkpoint's cluster-wide minimum datfrozenxid: 1265 Latest checkpoint's database with cluster-wide minimum datfrozenxid: 1 Latest checkpoint's oldest transaction ID still running: 0 Latest checkpoint's cluster-wide minimum datminmxid: 1 Latest checkpoint's database with cluster-wide minimum datminmxid: 1 One could even rearrange the layout a little bit like this: Control data as of latest checkpoint: next free transaction ID: 0/7575 next free OID: 49152 etc. Comments? -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers