Firebird DB - verkleinern ohne Backup/Restore

[Gruber_Hans_12345]

20000

Es handelt sich hier um eine logging DB wo sehr sehr viele einträge reinkommen, die dann periodisch um 24:00 wieder gelöscht werden (abhängig von der priorität)
nur eben wächst die DB dermassen an, das es schon problematisch ist ...

Code:

Service started at 10.01.2013 17:20:53
 
Database "d:\DB\logging.fdb" 
Database header page information: 
   Flags         0 
   Checksum      12345 
   Generation      71323419 
   Page size      8192 
   ODS version      11.2 
   Oldest transaction   71319978 
   Oldest active      71319979 
   Oldest snapshot      71319979 
   Next transaction   71322417 
   Bumped transaction   1 
   Sequence number      0 
   Next attachment ID   990 
   Implementation ID   26 
   Shadow count      0 
   Page buffers      4000 
   Next header page   0 
   Database dialect   3 
   Creation date      Dec 4, 2011 16:35:43 
   Attributes      force write 
 
    Variable header data: 
   Sweep interval:      20000 
   *END* 
 
 
Database file sequence: 
File d:\interbase\system.fdb is the only file 
 
Analyzing database pages ... 
CLIENT_LOG (135) 
    Primary pointer page: 164, Index root page: 165 
    Data pages: 207, data page slots: 207, average fill: 77% 
    Fill distribution: 
    0 - 19% = 1 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 206 
   80 - 99% = 0 
 
    Index RDB$PRIMARY7 (0) 
   Depth: 2, leaf buckets: 10, nodes: 16150 
   Average data length: 1.00, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 0 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 10 
 
LOG_ITEM (128) 
    Primary pointer page: 150, Index root page: 151 
    Data pages: 82804, data page slots: 184513, average fill: 80% 
    Fill distribution: 
    0 - 19% = 6270 
   20 - 39% = 98 
   40 - 59% = 89 
   60 - 79% = 4932 
   80 - 99% = 71415 
 
    Index LOG_ITEM_DATUM (2) 
   Depth: 3, leaf buckets: 3383, nodes: 3404270 
   Average data length: 2.01, total dup: 18823, max dup: 1 
   Fill distribution: 
        0 - 19% = 3 
       20 - 39% = 10 
       40 - 59% = 15 
       60 - 79% = 16 
       80 - 99% = 3339 
 
    Index LOG_ITEM_MODUL (1) 
   Depth: 3, leaf buckets: 3850, nodes: 3404270 
   Average data length: 0.00, total dup: 3404022, max dup: 2882862 
   Fill distribution: 
        0 - 19% = 34 
       20 - 39% = 677 
       40 - 59% = 1965 
       60 - 79% = 797 
       80 - 99% = 377 
 
    Index RDB$PRIMARY1 (0) 
   Depth: 3, leaf buckets: 2563, nodes: 3404270 
   Average data length: 1.02, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 3 
       20 - 39% = 16 
       40 - 59% = 8 
       60 - 79% = 11 
       80 - 99% = 2525 
 
LOG_MODUL (129) 
    Primary pointer page: 152, Index root page: 153 
    Data pages: 8, data page slots: 22, average fill: 49% 
    Fill distribution: 
    0 - 19% = 3 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 5 
   80 - 99% = 0 
 
LOG_PRIORITY (130) 
    Primary pointer page: 154, Index root page: 155 
    Data pages: 0, data page slots: 0, average fill: 0% 
    Fill distribution: 
    0 - 19% = 0 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 0 
   80 - 99% = 0 
 
    Index RDB$PRIMARY2 (0) 
   Depth: 1, leaf buckets: 1, nodes: 0 
   Average data length: 0.00, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 1 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 0 
 
LOG_PRUNE (132) 
    Primary pointer page: 158, Index root page: 159 
    Data pages: 1, data page slots: 1, average fill: 9% 
    Fill distribution: 
    0 - 19% = 1 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 0 
   80 - 99% = 0 
 
    Index RDB$PRIMARY3 (0) 
   Depth: 1, leaf buckets: 1, nodes: 13 
   Average data length: 1.08, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 1 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 0 
 
LOG_SEND_SUPPORT (133) 
    Primary pointer page: 160, Index root page: 161 
    Data pages: 1, data page slots: 1, average fill: 3% 
    Fill distribution: 
    0 - 19% = 1 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 0 
   80 - 99% = 0 
 
    Index RDB$PRIMARY5 (0) 
   Depth: 1, leaf buckets: 1, nodes: 5 
   Average data length: 1.20, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 1 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 0 
 
LOG_SETTINGS (131) 
    Primary pointer page: 156, Index root page: 157 
    Data pages: 1, data page slots: 1, average fill: 2% 
    Fill distribution: 
    0 - 19% = 1 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 0 
   80 - 99% = 0 
 
    Index RDB$PRIMARY4 (0) 
   Depth: 1, leaf buckets: 1, nodes: 3 
   Average data length: 7.67, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 1 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 0 
 
SETTINGS (134) 
    Primary pointer page: 162, Index root page: 163 
    Data pages: 1, data page slots: 1, average fill: 4% 
    Fill distribution: 
    0 - 19% = 1 
   20 - 39% = 0 
   40 - 59% = 0 
   60 - 79% = 0 
   80 - 99% = 0 
 
    Index RDB$PRIMARY6 (0) 
   Depth: 1, leaf buckets: 1, nodes: 5 
   Average data length: 10.00, total dup: 0, max dup: 0 
   Fill distribution: 
        0 - 19% = 1 
       20 - 39% = 0 
       40 - 59% = 0 
       60 - 79% = 0 
       80 - 99% = 0 
 

Service ended at 10.01.2013 17:29:10