Maximum Number of Page Buffers in Cache
---------------------------------------

                 Key: CORE-5135
                 URL: http://tracker.firebirdsql.org/browse/CORE-5135
             Project: Firebird Core
          Issue Type: Bug
    Affects Versions: 3.0 RC2
         Environment: SuperServer x64  LI-V6.3.0.32372 Firebird 3.0 Release 
Candidate 2
            Reporter: Sascha Michel
            Priority: Minor


In the FIle "Firebird-3.0.0_RC2-ReleaseNotes.pdf" i read this:

The maximum number of pages that can be configured for the database cache 
depends on whether the database
is running under 64-bit or 32-bit Firebird:
• 64-bit :: 2 31 -1 (2,147,483,647) pages
• 32-bit :: 128,000 pages, i.e., unchanged from V.2.5

On a 64-bit system i can't set values greater then  65535 !

Command:
root@FB30:/opt/firebird/bin# ./gfix -b 65536 -user sysdba -pa masterkey 
127.0.0.1:KM
I/O error during "re open() for SYNC/DIRECT" operation for file "/DB/KM.fdb"
-Error while trying to open file
-Invalid argument

The database becomes unavailable.

When i set:
root@FB30:/opt/firebird/bin# ./gfix -b 65535 -user sysdba -pa masterkey 
127.0.0.1:KM

All is OK.






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