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Solve the problem of OID collisions by probing for duplicate OIDs

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whenever we generate a new OID.  This prevents occasional duplicate-OID
errors that can otherwise occur once the OID counter has wrapped around.
Duplicate relfilenode values are also checked for when creating new
physical files.  Per my recent proposal.
This commit is contained in:
Tom Lane
2005-08-12 01:36:05 +00:00
parent 9e4a2de844
commit 721e53785d
20 changed files with 416 additions and 268 deletions
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src/include/access/transam.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/transam.h,v 1.54 2005/04/13 18:54:57 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/transam.h,v 1.55 2005/08/12 01:36:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -126,6 +126,5 @@ extern TransactionId ReadNewTransactionId(void);
extern void SetTransactionIdLimit(TransactionId oldest_datfrozenxid,
Name oldest_datname);
extern Oid GetNewObjectId(void);
extern void CheckMaxObjectId(Oid assigned_oid);
#endif /* TRAMSAM_H */