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Transaction Table

原创 Linux操作系统 作者:hrb_qiuyb 时间:2008-01-30 22:49:05 0 删除 编辑

Transaction Table

==> Transaction Table
==> state 0 = IDLE
1 = Collecting 2 = Prepared 3 = Committed
4 = Forced Abort 5 = Forced Commit 6 = Forced Mixed
7 = try again later
9 = No TX (Committed) 10= Active local TX
==> cflags 1 = TX has started storing collecting information

2 = TX has forced the collecting information
4 = Prepared TX needs distributed recovery
10= Rollback failed on this TX - mark SMON for recover
20= TX has rolled back its updates
==> wrap# is incremented TX slot reuse.
==> uel ?
==> scn SCN for the TX prepare / commit
==> dba is DBA of HEAD of the REDO - Ie: The MOST RECENT CHANG

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