Hi,
am I right that an XID is global across the whole DB cluster
under the same $PGDATA? I am asking because in the WAL
record, the first thing sent is an XLogRecord which contains
TransactionId xl_xid;
and as the comment in access/xlog.h says:
/** The overall layout of an XLOG record is:* Fixed-size header (XLogRecord struct)*
rmgr-specificdata* BkpBlock* backup block data* BkpBlock* backup
blockdata* ...
And the BkpBlock structure contains the RelFileNode info,
the triplet for tablespace/database/relation.
Or is it completely backwards?
I am asking this because I need to check TransactionIdDidCommit(XLogRecord->xl_xid)
from the walreciver. Can I expect it to work on any
xl_xid that walreceiver encounters?
Best regards,
Zoltán Böszörményi
--
Bible has answers for everything. Proof:
"But let your communication be, Yea, yea; Nay, nay: for whatsoever is more
than these cometh of evil." (Matthew 5:37) - basics of digital technology.
"May your kingdom come" - superficial description of plate tectonics
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Zoltán Böszörményi
Cybertec Schönig & Schönig GmbH
http://www.postgresql.at/
