Oracle(block clean out)的块清除
2008-09-02 12:45:53 来源:WEB开发网提交成功
SQL>altersystemdumpdatafile8block36;--大于db_cache_size10%的块
系统已更改。
SQL>altersystemdumpdatafile8block1160;--小于db_cache_size10%的块
系统已更改。
Startdumpdatablockstsn:8file#:8minblk36maxblk36 buffertsn:8rdba:0x02000024(8/36) scn:0x0000.000b2b52seq:0x01flg:0x02tail:0x2b520601 frmt:0x02chkval:0x0000type:0x06=transdata Blockheaderdump:0x02000024 ObjectidonBlock?Y seg/obj:0x739dcsc:0x00.b21dbitc:2flg:Etyp:1-DATA brn:0bdba:0x2000021ver:0x01 inc:0exflg:0 ItlXidUbaFlagLckScn/Fsc 0x010x000a.02b.000001520x0080a0c5.002a.2aC---0scn0x0000.000b218f 0x020x0003.008.000001d60x0080129d.0043.01--U-1fsc0x0000.000b2b52 | |
----大于10%的块未被清除
data_block_dump,dataheaderat0x3321064 =============== tsiz:0x1f98 hsiz:0x14 pbl:0x03321064 bdba:0x02000024 76543210 flag=-------- ntab=1 nrow=1 frre=-1 fsbo=0x14 fseo=0x42d avsp=0x419 tosp=0x419 0xe:pti[0]nrow=1offs=0 0x12:pri[0]offs=0x42d block_row_dump: tab0,row0,@0x42d tl:7019fb:--H-FL--lb:0x2cc:5 col0:[3]c24c3c col1:[2000] 2f31303037366232335f4f7261437573746f6d446174756d43 6c6f7375722020202020202020202020202020202020202020 20202020202020202020202020202020202020202020202020 ...... 20202020202020202020202020202020202020202020202020 col2:[2000] 63202020202020202020202020202020202020202020202020 20202020202020202020202020202020202020202020202020 ...... 20202020202020202020202020202020202020202020202020 col3:[2000] 63202020202020202020202020202020202020202020202020 20202020202020202020202020202020202020202020202020 ,,,,,, 20202020202020202020202020202020202020202020202020 col4:[1000] 63202020202020202020202020202020202020202020202020 20202020202020202020202020202020202020202020202020 ...... 20202020202020202020202020202020202020202020202020 end_of_block_dump Enddumpdatablockstsn:8file#:8minblk36maxblk36 Startdumpdatablockstsn:8file#:8minblk1160maxblk1160 buffertsn:8rdba:0x02000488(8/1160) scn:0x0000.000b2b5dseq:0x01flg:0x00tail:0x2b5d0601 frmt:0x02chkval:0x0000type:0x06=transdata Blockheaderdump:0x02000488 ObjectidonBlock?Y seg/obj:0x739dcsc:0x00.b2b5ditc:2flg:Etyp:1-DATA brn:0bdba:0x200040aver:0x01 inc:0exflg:0 ItlXidUbaFlagLckScn/Fsc 0x010x000a.02b.000001520x0080a0ce.002a.6aC---0scn0x0000.000b218f 0x020x0003.008.000001d60x00801a84.004a.01C---0scn0x0000.000b2b52 | |
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