SQL info; Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 using D:\oracleinstantclient_11_2\oci.dll (OCI version 11.1) Connected as SYS SQL select * from v$log; /////此视图包含需要归档的重做日志文件的信息 GROUP# THRE
SQL> info;
Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0
using D:\oracleinstantclient_11_2\oci.dll (OCI version 11.1)
Connected as SYS
SQL> select * from v$log; /////此视图包含需要归档的重做日志文件的信息
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARCHIVED STATUS FIRST_CHANGE# FIRST_TIME NEXT_CHANGE# NEXT_TIME
---------- ---------- ---------- ---------- ---------- ---------- -------- ---------------- ------------- ----------- ------------ -----------
1 1 25 52428800 512 1 NO INACTIVE 1649914 2012-10-22 1666515 2012-10-22
2 1 26 52428800 512 1 NO CURRENT 1666515 2012-10-22 281474976710
3 1 24 52428800 512 1 NO INACTIVE 1611653 2012-10-21 1649914 2012-10-22
SQL> select * from V$BACKUP; ////此视图显示所有联机数据文件的备份状态。
FILE# STATUS CHANGE# TIME
---------- ------------------ ---------- -----------
1 NOT ACTIVE 0
2 NOT ACTIVE 0
3 NOT ACTIVE 0
4 NOT ACTIVE 0
5 NOT ACTIVE 0
6 NOT ACTIVE 0
6 rows selected
SQL> select * from V$BACKUP_ASYNC_IO; ///此视图显示控制文件中的备份集信息。在成功地完成备份集时，插入一个备份集记录。
SID SERIAL USE_COUNT RMAN_STATUS_RECID RMAN_STATUS_STAMP DEVICE_TYPE TYPE STATUS FILENAME SET_COUNT SET_STAMP BUFFER_SIZE BUFFER_COUNT TOTAL_BYTES OPEN_TIME
CLOSE_TIME ELAPSED_TIME MAXOPENFILES BYTES EFFECTIVE_BYTES_PER_SECOND IO_COUNT READY SHORT_WAITS SHORT_WAIT_TIME_TOTAL SHORT_WAIT_TIME_MAX LONG_WAITS LONG_WAIT_TIME_TOTAL LONG_WAIT_TIME_MAX
---------- ---------- ---------- ----------------- ----------------- ----------------- --------- ----------- -------------------------------------------------------------------------------- ---------- ---------- ----------- ------------ ----------- -----------
----------- ------------ ------------ ---------- -------------------------- ---------- ---------- ----------- --------------------- ------------------- ---------- -------------------- ------------------
SQL> select * from V$BACKUP_CORRUPTION; ///此视图显示来自控制文件的数据文件备份中出错的相关信息。注意，在控制文件和归
////档日志备份中是不容许出错的。
RECID STAMP SET_STAMP SET_COUNT PIECE# FILE# BLOCK# BLOCKS CORRUPTION_CHANGE# MARKED_CORRUPT CORRUPTION_TYPE
---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ------------------ -------------- ---------------
SQL> select * from V$BACKUP_DATAFILE; ////此视图显示来自控制文件的备份数据文件和备份控制文件。
RECID STAMP SET_STAMP SET_COUNT FILE# CREATION_CHANGE# CREATION_TIME RESETLOGS_CHANGE# RESETLOGS_TIME INCREMENTAL_LEVEL INCREMENTAL_CHANGE# CHECKPOINT_CHANGE# CHECKPOINT_TIME ABSOLUTE_FUZZY_CHANGE# MARKED_CORRUPT MEDIA_CORRUPT LOGICALLY_CORRUPT
DATAFILE_BLOCKS BLOCKS BLOCK_SIZE OLDEST_OFFLINE_RANGE COMPLETION_TIME CONTROLFILE_TYPE USED_CHANGE_TRACKING BLOCKS_READ USED_OPTIMIZATION FOREIGN_DBID PLUGGED_READONLY PLUGIN_CHANGE# PLUGIN_RESETLOGS_CHANGE# PLUGIN_RESETLOGS_TIME div_SIZE UNDO_OPTIMIZED
BLOCKS_SKIPPED_IN_CELL
---------- ---------- ---------- ---------- ---------- ---------------- ------------- ----------------- -------------- ----------------- ------------------- ------------------ --------------- ---------------------- -------------- ------------- -----------------
--------------- ---------- ---------- -------------------- --------------- ---------------- -------------------- ----------- ----------------- ------------ ---------------- -------------- ------------------------ --------------------- ------------ --------------
----------------------
SQL>
SQL> select * from V$BACKUP_DEVICE; (注释：这个视图显示支持设备的设备的有关信息。如果某种设备类型不支持指定的设备，则返
回该设备的一个带设备类型和空设备的行。如果某种设备类型支持指定的设备，则为该类型
的每个可用设备返回一行。这个视图不返回特殊的设备类型DISK，因为它总是可用的。)
DEVICE_TYPE DEVICE_NAME
----------------- --------------------------------------------------------------------------------
SBT_TAPE
SQL>
SQL> select * from V$INSTANCE; ////这个视图显示当前实例的状态。
INSTANCE_NUMBER INSTANCE_NAME HOST_NAME VERSION STARTUP_TIME STATUS PARALLEL THREAD# ARCHIVER LOG_SWITCH_WAIT LOGINS SHUTDOWN_PENDING DATABASE_STATUS INSTANCE_ROLE ACTIVE_STATE
BLOCKED
--------------- ---------------- ---------------------------------------------------------------- ----------------- ------------ ------------ -------- ---------- -------- --------------- ---------- ---------------- ----------------- ------------------ ------------
-------
1 orcl zhangshibo 11.2.0.1.0 2012-10-17 1 OPEN NO 1 STOPPED ALLOWED NO ACTIVE PRIMARY_INSTANCE NORMAL
NO
SQL>
SQL> select * from V$LOCK; ////这个视图列出Oracle 服务器当前拥有的锁以及未完成的锁或栓锁请求。
ADDR KADDR SID TYPE ID1 ID2 LMODE REQUEST CTIME BLOCK
---------------- ---------------- ---------- ---- ---------- ---------- ---------- ---------- ---------- ----------
00000000C6C891A8 00000000C6C89200 209 XR 4 0 1 0 443625 0
00000000C6C89278 00000000C6C892D0 209 RD 1 0 1 0 443625 0
00000000C6C89348 00000000C6C893A0 209 CF 0 0 2 0 443625 0
00000000C6C894E8 00000000C6C89540 209 RS 25 1 2 0 443621 0
00000000C6C895B8 00000000C6C89610 99 AE 100 0 4 0 3425 0
00000000C6C89688 00000000C6C896E0 193 RT 1 0 6 0 443621 0
00000000C6C89758 00000000C6C897B0 161 PW 1 0 3 0 443301 0
00000000C6C89828 00000000C6C89880 225 TS 3 1 3 0 443304 0
00000000C6C898F8 00000000C6C89950 1 AE 100 0 4 0 443303 0
00000000C6C899C8 00000000C6C89A20 161 MR 1 0 4 0 443304 0
00000000C6C89A98 00000000C6C89AF0 161 MR 2 0 4 0 443304 0
00000000C6C89B68 00000000C6C89BC0 161 MR 3 0 4 0 443304 0
00000000C6C89C38 00000000C6C89C90 161 MR 4 0 4 0 443304 0
00000000C6C89D08 00000000C6C89D60 161 MR 5 0 4 0 443304 0
00000000C6C89DD8 00000000C6C89E30 161 MR 6 0 4 0 443304 0
00000000C6C89EC0 00000000C6C89F18 161 MR 201 0 4 0 443304 0
00000000C6C89F90 00000000C6C89FE8 114 AE 100 0 4 0 3507 0
00000000C6C8A060 00000000C6C8A0B8 130 AE 100 0 4 0 408 0
00000000C6C8A130 00000000C6C8A188 146 AE 100 0 4 0 3409 0
00000000C6C8A200 00000000C6C8A258 162 AE 100 0 4 0 3367 0
ADDR KADDR SID TYPE ID1 ID2 LMODE REQUEST CTIME BLOCK
---------------- ---------------- ---------- ---- ---------- ---------- ---------- ---------- ---------- ----------
00000000C6C8A2D0 00000000C6C8A328 178 AE 100 0 4 0 1067 0
21 rows selected
SQL>
SQL> select * from V$OPTION; ////这个视图列出与 Oracle 一道安装的选项。
PARAMETER VALUE
---------------------------------------------------------------- ----------------------------------------------------------------
Partitioning TRUE
Objects TRUE
Real Application Clusters FALSE
Advanced replication TRUE
Bit-mapped indexes TRUE
Connection multiplexing TRUE
Connection pooling TRUE
Database queuing TRUE
Incremental backup and recovery TRUE
Instead-of triggers TRUE
Parallel backup and recovery TRUE
Parallel execution TRUE
Parallel load TRUE
Point-in-time tablespace recovery TRUE
Fine-grained access control TRUE
Proxy authentication/authorization TRUE
Change Data Capture TRUE
Plan Stability TRUE
Online Index Build TRUE
Coalesce Index TRUE
PARAMETER VALUE
---------------------------------------------------------------- ----------------------------------------------------------------
Managed Standby TRUE
Materialized view rewrite TRUE
Materialized view warehouse refresh TRUE
Database resource manager TRUE
Spatial TRUE
Automatic Storage Management FALSE
Export transportable tablespaces TRUE
Transparent Application Failover TRUE
Fast-Start Fault Recovery TRUE
Sample Scan TRUE
Duplexed backups TRUE
Java TRUE
OLAP Window Functions TRUE
Block Media Recovery TRUE
Fine-grained Auditing TRUE
Application Role TRUE
Enterprise User Security TRUE
Oracle Data Guard TRUE
Oracle Label Security FALSE
OLAP TRUE
Basic Compression TRUE
PARAMETER VALUE
---------------------------------------------------------------- ----------------------------------------------------------------
Join index TRUE
Trial Recovery TRUE
Data Mining TRUE
Online Redefinition TRUE
Streams Capture TRUE
File Mapping TRUE
Block Change Tracking TRUE
Flashback Table TRUE
Flashback Database TRUE
Transparent Data Encryption TRUE
Backup Encryption TRUE
Unused Block Compression TRUE
Oracle Database Vault FALSE
Result Cache TRUE
SQL Plan Management TRUE
SecureFiles Encryption TRUE
Real Application Testing TRUE
Flashback Data Archive TRUE
DICOM TRUE
Active Data Guard TRUE
Server Flash Cache TRUE
PARAMETER VALUE
---------------------------------------------------------------- ----------------------------------------------------------------
Advanced Compression TRUE
XStream TRUE
Deferred Segment Creation TRUE
65 rows selected
SQL>
SQL> select * from V$ROLLNAME; ///这个视图列出所有联机回退段的名称。它只有在数据库打开时访问。
USN NAME
---------- ------------------------------
0 SYSTEM
1 _SYSSMU1_3780397527$
2 _SYSSMU2_2232571081$
3 _SYSSMU3_2097677531$
4 _SYSSMU4_1152005954$
5 _SYSSMU5_1527469038$
6 _SYSSMU6_2443381498$
7 _SYSSMU7_3286610060$
8 _SYSSMU8_2012382730$
9 _SYSSMU9_1424341975$
10 _SYSSMU10_3550978943$
11 rows selected
SQL>
SQL> select * from V$RSRC_CONSUMER_GROUP_CPU_MTH; ////这个视图显示资源使用者组的所有可用资源分配方法。
NAME
----------------------------------------
ROUND-ROBIN
RUN-TO-COMPLETION
SQL>
SQL> select * from V$RSRC_PLAN; ////这个视图显示所有当前活动资源计划的名称。
ID NAME IS_TOP_PLAN CPU_MANAGED
---------- -------------------------------- ----------- -----------
SQL>
SQL> select * from V$SESSION_CONNECT_INFO; ///这个视图显示当前会话的网络连接的有关信息。
SID SERIAL# AUTHENTICATION_TYPE OSUSER NETWORK_SERVICE_BANNER CLIENT_CHARSET CLIENT_CONNECTION CLIENT_OCI_LIBRARY CLIENT_VERSION
CLIENT_DRIVER CLIENT_LOBATTR CLIENT_REGID
---------- ---------- -------------------------- ------------------------------ -------------------------------------------------------------------------------- ---------------------------------------- ----------------- --------------------------- ----------------------------------------
------------- ----------------------- ------------
99 2486 INTERNAL 马明 TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
99 2486 INTERNAL 马明 Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
99 2486 INTERNAL 马明 Oracle Advanced Security: crypto-checksumming service for Linux: Version 11.2.0. UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
114 2040 DATABASE lxm TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production US7ASCII Homogeneous Home-based 11.2.0.2.0
Client Temp Lob Rfc On 0
114 2040 DATABASE lxm Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro US7ASCII Homogeneous Home-based 11.2.0.2.0
Client Temp Lob Rfc On 0
114 2040 DATABASE lxm Oracle Advanced Security: crypto-checksumming service for Linux: Version 11.2.0. US7ASCII Homogeneous Home-based 11.2.0.2.0
Client Temp Lob Rfc On 0
130 163 DATABASE Administrator TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
130 163 DATABASE Administrator Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
130 163 DATABASE Administrator Oracle Advanced Security: crypto-checksumming service for Linux: Version 11.2.0. UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
146 77 INTERNAL 马明 TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
146 77 INTERNAL 马明 Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
146 77 INTERNAL 马明 Oracle Advanced Security: crypto-checksumming service for Linux: Version 11.2.0. UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
162 89 INTERNAL 马明 TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
162 89 INTERNAL 马明 Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
162 89 INTERNAL 马明 Oracle Advanced Security: crypto-checksumming service for Linux: Version 11.2.0. UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
178 65 DATABASE Administrator TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
Client Temp Lob Rfc On 0
178 65 DATABASE Administrator Oracle Advanced Security: encryption service for Linux: Version 11.2.0.1.0 - Pro UTF8 Heterogeneous Full Instant Client 11.2.0.2.0
與其他RDBM相比，MySQL如何處理並發？Apr 29, 2025 am 12:44 AMMySQLhandlesconcurrencyusingamixofrow-levelandtable-levellocking,primarilythroughInnoDB'srow-levellocking.ComparedtootherRDBMS,MySQL'sapproachisefficientformanyusecasesbutmayfacechallengeswithdeadlocksandlacksadvancedfeatureslikePostgreSQL'sSerializa
MySQL與其他關係數據庫相比如何處理交易？Apr 29, 2025 am 12:37 AMmySqlHandLestActionSefectefectionalytheinnodbengine，supportingAcidPropertiessimilartopostgresqlesqlandoracle.1）mySqluessRepeTableReadAbereadasTheDefaultIsolationLeleleteLevel，whatcanBeadJustEdToreDtoreDtoreDtoreadCommittedCommittenCommententCommittedForHigh-TrafficsCenarios.2）
在MySQL中編寫有效的SQL查詢的最佳實踐是什麼？Apr 29, 2025 am 12:24 AM最佳實踐包括：1)理解數據結構和MySQL處理方式，2)適當索引，3)避免SELECT*，4)使用合適的JOIN類型，5)謹慎使用子查詢，6)使用EXPLAIN分析查詢，7)考慮查詢對服務器資源的影響，8)定期維護數據庫。這些做法能使MySQL查詢不僅快速，還具備可維護性、可擴展性和資源效率。
MySQL與PostgreSQL有何不同？Apr 29, 2025 am 12:23 AMMySQLisbetterforspeedandsimplicity,suitableforwebapplications;PostgreSQLexcelsincomplexdatascenarioswithrobustfeatures.MySQLisidealforquickprojectsandread-heavytasks,whilePostgreSQLispreferredforapplicationsrequiringstrictdataintegrityandadvancedSQLf
MySQL如何處理數據複製？Apr 28, 2025 am 12:25 AMMySQL通過異步、半同步和組複製三種模式處理數據複製。 1）異步複製性能高但可能丟失數據。 2）半同步複製提高數據安全性但增加延遲。 3）組複製支持多主複製和故障轉移，適用於高可用性需求。
您如何使用解釋性語句分析查詢性能？Apr 28, 2025 am 12:24 AMEXPLAIN語句可用於分析和提升SQL查詢性能。 1.執行EXPLAIN語句查看查詢計劃。 2.分析輸出結果，關注訪問類型、索引使用情況和JOIN順序。 3.根據分析結果，創建或調整索引，優化JOIN操作，避免全表掃描，以提升查詢效率。
您如何備份並還原MySQL數據庫？Apr 28, 2025 am 12:23 AM使用mysqldump進行邏輯備份和MySQLEnterpriseBackup進行熱備份是備份MySQL數據庫的有效方法。 1.使用mysqldump備份數據庫：mysqldump-uroot-pmydatabase>mydatabase_backup.sql。 2.使用MySQLEnterpriseBackup進行熱備份：mysqlbackup--user=root--password=password--backup-dir=/path/to/backupbackup。恢復時，使用相應的命
熱AI工具
Undresser.AI Undress
人工智慧驅動的應用程序，用於創建逼真的裸體照片
AI Clothes Remover
用於從照片中去除衣服的線上人工智慧工具。
Undress AI Tool
免費脫衣圖片
Clothoff.io
AI脫衣器
Video Face Swap
使用我們完全免費的人工智慧換臉工具，輕鬆在任何影片中換臉！
熱門文章
熱工具
MinGW - Minimalist GNU for Windows
這個專案正在遷移到osdn.net/projects/mingw的過程中，你可以繼續在那裡關注我們。 MinGW：GNU編譯器集合（GCC）的本機Windows移植版本，可自由分發的導入函式庫和用於建置本機Windows應用程式的頭檔；包括對MSVC執行時間的擴展，以支援C99功能。 MinGW的所有軟體都可以在64位元Windows平台上運作。
SublimeText3 英文版
推薦：為Win版本，支援程式碼提示！
SublimeText3 Linux新版
SublimeText3 Linux最新版
SublimeText3 Mac版
神級程式碼編輯軟體(SublimeText3)
Atom編輯器mac版下載
最受歡迎的的開源編輯器
