database
DB File/Tablespace Size Monitor 標籤： Oracle 查看每個File的使用率 SELECT T.TABLESPACE_NAME,D.FILE_NAME,D.AUTOEXTENSIBLE,D.BYTES/1024/1024/1024 as USED_G,D.MAXBYTES/1024/1024/1024 AS MAX_G,D.STATUS,(d.bytes/d.maxbytes)*100 AS UseRate FROM DBA_TABLESPACES T,DBA_DATA_FILES D
database
Oracle Mview教學 標籤： Oracle Oracle Mview教學 數據庫之間可以通過DBLINK+Materialized View實現數據同步； 若需要對物化視圖做UPDATE更新操作，則需要建立Writable Materialized View，在建立物化視圖時指定FOR UPDATE子句。由於Writable Materialized View要求物化視圖能夠快速刷新，所以建立必要的物化視圖日志Materialized View Log。 刷新方式：FAST/COMPLETE/FORCE 刷新時間：ON DEMAND/ON COMMIT 是否可更新：UPDATABLE/READ ONLY 是否支持查詢重寫：ENABLE QUERY REWRITE/DISABLE QUERY REWRITE Refresh Type COMPLETE、FAST和FORCECOMPLETE: 每次refresh 時重新執行 mview Query且重新建置 mview
database
查詢誰Lock住Oracle 標籤： Oracle Oracle sid and Linux pid 為什麼會Lock呢？因為user在update table的時候，沒有做commit的動作，ORACLE就會把它Lock，而在一次在更改的時候，就會形成Wait狀態。 Sometimes we found Oracle process that has been running too long using top command on Linux. We know it has PID. But how to know the SID of the process? Here is the script: 查詢Oracle誰Locks住Table:
backup
Oracle Export/Import DB(含Oracle Data Pump) 標籤： Oracle Export/Import DB 1. 確認空間大小 2. export tablespace，並確認是否要更改路徑 3. create user/grant resource 4. export data 5. import data 範列二： Oracle Data Pump 範列一：export production spc data to test spcdb 一、確認空間大小，空間約23+14+14+15+4.4G=70.
backup
建立Recovery Catalog的步驟&RMAN指令 標籤： Oracle 建立Recovery Catalog的步驟(11gAW2_Chapter3,4) 1.選擇reocvery catalog所在的database 2.建立獨立使用的tablespace(建議) 3.建立獨立的user(建議) 4.授權recovery_catalog_owner角色給step 3所建立的user 5.建立recovery catalog 6.註冊target database到recovery catalog(僅需一次) 7.RMAN常用指令 1.連結到Recovery catalog [oracle@oracleDB ~]$ sqlplus sys/oracle@192.168.56.1:1521/orcl as
file system
Version 1.0 Author: Falko Timme Follow me on Twitter This guide shows how to work with the btrfs file system on Linux. It covers creating and mounting btrfs file systems, resizing btrfs file systems online, adding and removing devices, changing RAID levels, creating subvolumes and snapshots, using compression and
configuration
configuration
前陣子大約有一段長達兩個月的時間被兩台網管型 Switch 折磨的不成人形，由於機房環境有切內外網，因此都用 VLAN 切開，由於我之前都沒用過網管型的 Switch 設備，因此也不太清楚原來有這麼多細節需要注意，原本網路通了就應該放棄研究的（就是不切 VLAN 即可），但一顆心懸在一個無法理解的問題讓我十分難受，最後還是花了兩個月時間不斷抽空跑機房、做測試、打電話尋求支援，最後終於徹底釐清觀念，但我不保證這篇文章可以寫的有多詳盡就是了，但可以供有興趣的人參考。 問題描述 以下是我第一台 Switch 的 VLAN 與接線示意圖與設定描述：( 廠牌為 D-Link，假設名稱為 Switch 1 ) * Port 1 是 Router Port ( 也就是從 ISP 的 Router 接到我們機櫃的那條線 ) * Port 01 ~ 08 為 VLAN 1 * Port
backup
Email Notifications Settings and Their Behaviors 1. Purpose 2. Assumptions 3. Applicability 4. Master server settings 5. Client settings 6. Table of effects 1. PURPOSE This article is presented to address the lack of clarity in the e-mail notification settings that are available in the NetBackup GUI under Host Properties
configuration
Kerberos is an authentication protocol that can provide secure network login or SSO for various services over a non-secure network. Kerberos works with the concept of tickets which are encrypted and can help reduce the amount of times passwords need to be sent over the network. These tickets are issued
configuration
Linux NFSv4 with Kerberos Time/NTP synchronization between OBD/NFS server, NFS client and KDC. Make sure server and client in the same domain. Add to DNS entry or Add to /etc/hosts (suggest lower-case letter as hostname) 172.22.21.69 h21-69.example.com h21-69 # NFS server 172.22.
backup
Problem This is a basic how to on the use of bpstart and bpend notify scripts. Solution Symantec NetBackup ™ comes packaged with a number of script files that provide information on the different stages of backup jobs and other aspects of its functionality. The bulk of the .cmd\.bat script