\u76f4\u63a5\u5148\u628a\u7ed3\u8bba\u5199\u5728\u4e0b\u9762\uff1a<\/p>\n
create insert append append+nologging nologging\n---------- ---------- ---------- ---------------- ----------\n 110276 759944 2632 1004 752772<\/code><\/pre>\n\u7ed3\u8bba\uff1aappend+nologging \u7684\u65e5\u5fd7\u91cf\u6700\u5c0f\u3002<\/p>\n
2\u3001\u5f52\u6863\u6a21\u5f0f\u4e0b<\/h3>\n create insert append append+nologging nologging\n---------- ---------- ---------- ---------------- ----------\n 874812 760320 784092 782508 752816<\/code><\/pre>\n\u7ed3\u8bba\uff1a\u5dee\u522b\u4e0d\u5927\uff0cnologging \u6700\u5c0f\u3002\u7528\u4e0d\u7528\u5dee\u4e0d\u591a\u3002
\n(\u540e\u6765\u9a8c\u8bc1\uff0c\u5148alter table nologging \u7136\u540e\u518dinsert \/+ append<\/em>\/\uff0c\u80fd\u6709\u6548\u964d\u4f4eREDO\u5927\u5c0f\uff0c\u5fd8\u8bb0\u8bb0\u5f55\u4e86\uff0c\u5927\u5bb6\u53ef\u4ee5\u81ea\u5df1\u505a\u4e2a\u5b9e\u9a8c\u9a8c\u8bc1\u4e00\u4e0b<\/strong>)<\/p>\n\u4e8c\u3001\u521b\u5efa\u7d22\u5f15\uff08\u975e\u5f52\u6863\uff09<\/h2>\nSQL> select (930388-656600) nologging ,(625448-349940) logging from dual;\n\n NOLOGGING LOGGING\n---------- ----------\n 273788 275508<\/code><\/pre>\nnologging \u4f1a\u5feb\u4e00\u70b9\uff0c\u5e76\u4e0d\u591a\u3002\u65e5\u5fd7\u5dee\u4e0d\u591a\u3002<\/p>\n
\u4e09\u3001\u8868\u7a7a\u95f4nologging\uff08\u975e\u5f52\u6863\uff09<\/h2>\nSQL> select (886316-99060),(1699944-912444) from dual;\n\n(886316-99060) (1699944-912444)\n-------------- ----------------\n 787256 787500<\/code><\/pre>\nnologging\u6ca1\u6709\u4f5c\u7528<\/p>\n
\u5b9e\u9a8c\u5185\u5bb9\uff1a<\/h1>\nRelease 11.2.0.1.0 Production on Thu Jul 14 18:11:12 2016<\/code><\/pre>\n1\u3001\u975e\u5f52\u6863\u6a21\u5f0f<\/h2>\nSQL> select a.name,b.value\nfrom v$statname a,v$mystat b\nwhere a.statistic#=b.statistic# and a.name='redo size'; 2 3 \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 0\n\nSQL> create table testredo as select * from dba_tables;\n\n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 110276<\/code><\/pre>\ninsert into testredo select * from dba_tables;\ncommit;\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 870220\n<\/code><\/pre>\ninsert \/*+ append*\/ into testredo select * from dba_tables;\ncommit;\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 872852\n<\/code><\/pre>\ninsert \/*+ append nologging *\/ into testredo select * from dba_tables;\ncommit;\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 873856\n<\/code><\/pre>\ninsert \/*+ nologging *\/ into testredo select * from dba_tables;\ncommit;\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size'; \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 1626628<\/code><\/pre>\n\nselect (110276-0) "create" ,(870220-110276) "insert",(872852-870220) "append", (873856-872852) "append nologging",(1626628-873856) "nologging" from dual;\n\n create insert append append nologging nologging\n---------- ---------- ---------- ---------------- ----------\n 110276 759944 2632 1004 752772<\/code><\/pre>\n\u7ed3\u8bba\uff1aappend nologging \u6700\u5c0f\u3002<\/p>\n
2\u3001\u5f52\u6863\u6a21\u5f0f<\/h2>\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size'; \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 0\n\nSQL> create table testredo as select * from dba_tables;\n\n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size'; \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 874812<\/code><\/pre>\nSQL> insert into testredo select * from dba_tables;\ncommit;\n???2729??\n\nSQL> \n\n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size'; \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 1635132<\/code><\/pre>\nSQL> insert \/*+ append*\/ into testredo select * from dba_tables;\n\n???2729??\n\nSQL> commit;\n\n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 2419224<\/code><\/pre>\nSQL> insert \/*+ append nologging *\/ into testredo select * from dba_tables;\ncommit;\n\n???2729??\n\nSQL> \n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 3201732<\/code><\/pre>\nSQL> insert \/*+ nologging *\/ into testredo select * from dba_tables;\n\n???2729??\n\nSQL> commit;\n\n?????\n\nSQL> select a.name,b.value\n 2 from v$statname a,v$mystat b\n 3 where a.statistic#=b.statistic# and a.name='redo size'; \n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 3954548<\/code><\/pre>\n\nselect (874812-0) "create" ,(1635132-874812) "insert",(2419224-1635132) "append", (3201732-2419224) "append nologging",(3954548-3201732) "nologging",(6241544-5491240) "nologging append" from dual;\n6241544\n\n create insert append append nologging nologging\n---------- ---------- ---------- ---------------- ----------\n 874812 760320 784092 782508 752816<\/code><\/pre>\n\u7ed3\u8bba\uff1anologging \u6700\u5c0f\uff0c\u518d\u6b21\u6d4b\u8bd5\u7ed3\u679c\u5dee\u4e0d\u591a\u3002<\/code><\/pre>\n3\u3001\u7d22\u5f15\u7684nologging\u7684\u4f5c\u7528<\/h2>\n\u975e\u5f52\u6863\u6a21\u5f0f\u4e0b<\/h3>\nOracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production\nWith the Partitioning, OLAP, Data Mining and Real Application Testing options\n\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 0\n\nSQL> set timing on;\nSQL> create table testredo as select * from tt;\n\n?????\n\n????: 00: 00: 05.89\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 349940\n\n????: 00: 00: 00.01\n\nSQL> create index inx_t1 on testredo (OBJECT_ID);\n\n??????\n\n????: 00: 00: 07.46\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 625448\n\n????: 00: 00: 00.00\nSQL> drop index inx_t1;\n\n??????\n\n????: 00: 00: 00.07\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 656600\n\n????: 00: 00: 00.01\nSQL> create index inx_t1 on testredo (OBJECT_ID) nologging;\n\n??????\n\n????: 00: 00: 06.94\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------------------------------------------------------------- ----------\nredo size 930388\n\n????: 00: 00: 00.00\n\nSQL> select (930388-656600) nologging ,(625448-349940) logging from dual;\n\n NOLOGGING LOGGING\n---------- ----------\n 273788 275508<\/code><\/pre>\n\u521b\u5efa\u7d22\u5f15\u7528nologging \u53ea\u6709\u5f88\u5c0f\u7684\u6539\u5584\uff08\u5b9e\u4f8b\u662f\u7528460\u4e07\u7684\u6570\u636e\u8fdb\u884c\u7684\u5b9e\u9a8c\uff09\u3002<\/p>\n
\u4e09\u3001\u8868\u7a7a\u95f4nologging<\/h2>\n
\u8868\u7a7a\u95f4nologging <\/p>\n
SQL> alter tablespace users logging;\n\nTablespace altered.\n\nSQL> create table testredo tablespace users as select * from dba_tables where 1>3;\n\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------- ----------\nredo size 99060\n\nSQL> insert into testredo select * from dba_tables;\n\n2740 rows created.\n\nSQL> commit;\n\nCommit complete.\n\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------- ----------\nredo size 886316\n\nSQL> alter tablespace users nologging;\n\nTablespace altered.\n\nSQL> insert into testredo select * from dba_tables;\n\n2740 rows created.\n\nSQL> commit;\n\nCommit complete.\n\nSQL> select a.name,b.value from v$statname a,v$mystat b where a.statistic#=b.statistic# and a.name='redo size';\n\nNAME VALUE\n---------- ----------\nredo size 1699944\n\nSQL> select (886316-99060),(1699944-912444) from dual;\n\n(886316-99060) (1699944-912444)\n-------------- ----------------\n 787256 787500\n\nSQL> select log_mode from v$database;\n\nLOG_MODE\n------------------------------------\nNOARCHIVELOG<\/code><\/pre>\n\u7ed3\u8bba\uff0c\u6ca1\u6709\u4f5c\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7ed3\u8bba \u76f4\u63a5\u5148\u628a\u7ed3\u8bba\u5199\u5728\u4e0b\u9762\uff1a \u4e00\u3001\u63d2\u5165\u6570\u636e\uff1a 1\u3001<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-619","post","type-post","status-publish","format-standard","hentry","category-oracle-11g"],"_links":{"self":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=619"}],"version-history":[{"count":3,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/619\/revisions"}],"predecessor-version":[{"id":622,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/619\/revisions\/622"}],"wp:attachment":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=619"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=619"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}