官方文檔參考:
SYSDBA is used internally in the Oracle database and has specialized functions. Its behavior is not the same as for generalized users. For example, the SYS user cannot do a transaction level consistent read (read-only transaction). Queries by SYS will return changes made during the transaction even if SYS has set the transaction to be READ ONLY. Therefore export parameters like CONSISTENT, OBJECT_CONSISTENT, FLASHBACK_SCN, and FLASHBACK_TIME cannot be used.
進行Oracle事務相關的實驗時,要盡量使用普通用戶,因為很多事務級別的設置,對于sqlplus / as sysdba連入方式無法獲得正確的結果。
如果想給用戶獲取數(shù)據(jù)字典以方便實驗的目的可給用戶賦予如下權限:
GRANT CONNECT,RESOURCE,SELECT ANY DICTIONARY,SELECT ANY TABLE TO TUSER;
參考:How To Connect As SYSDBA When Using Export Or Import (文檔 ID 277237.1)
網(wǎng)頁名稱:OracleSYS用戶無法設置session級別的readonly-創(chuàng)新互聯(lián)
文章地址:http://www.rwnh.cn/article32/pcjpc.html
成都網(wǎng)站建設公司_創(chuàng)新互聯(lián),為您提供微信公眾號、關鍵詞優(yōu)化、標簽優(yōu)化、云服務器、小程序開發(fā)、響應式網(wǎng)站
廣告
聲明:本網(wǎng)站發(fā)布的內(nèi)容(圖片、視頻和文字)以用戶投稿、用戶轉載內(nèi)容為主,如果涉及侵權請盡快告知,我們將會在第一時間刪除。文章觀點不代表本網(wǎng)站立場,如需處理請聯(lián)系客服。電話:028-86922220;郵箱:631063699@qq.com。內(nèi)容未經(jīng)允許不得轉載,或轉載時需注明來源:
創(chuàng)新互聯(lián)