A user complains that he gets the following error message repeatedly after executing some SQL statements.The error message forces the user to log off from and log onto the database to continue his work. ORA-02392：exceeded session limit on CPU usage，you are being logged off Which action would you take to increase the session limit on CPU usage？（） Modify the profile assigned to the user.。 Modify the roles assigned to the users.。 Modify the object privileges assigned to the user.。 Modify the system privileges assigned to the users.。 Modify the value for the RESOURCE_LIMIT parameter in the parameter file.。
按照《社会保险法》、《建筑法》的规定，取消原规费中危险作业（），增加工伤保险费、生育保险费。 A.意外伤害保险费 。 B.第三者责任险 。 C.施工装备险 。 D.工程一切险。
Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN. You want to issue the following RMAN command: RMAN > BACKUP TABLESPACE hr_pdb:userdata; Which task should you perform before issuing the command?（） Place the root container in ARHCHIVELOG mode.。 Take the user data tablespace offline.。 Place the root container in the nomount stage.。 Ensure that HR_PDB is open.。
Examine the command： SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）； Which statement describes the effect of the above command（） Automatic statistics collection is stopped for the CUSTOMERS table.。 Statistics for the CUSTOMERS table are locked and cannot be overwritten.。 Existing statistics for the CUSTOMERS table become unusable for the query optimizer.。 Subsequently， statistics gathered on the CUSTOMERS table are stored as pending statistics.。
有关抗阻练习的描述中，下列哪一项是错误的（） 训练时不要憋气，收缩时呼气。 骨质疏松症患者是抗阻练习的禁忌证。 若施与受训练肌肉的阻力过大，会出现替代运动。 为避兔抗阻练习的疲劳，练习中应有一定的间歇。 抗阻运动肌肉疼痛可在训练后即刻或训练后24～48小时出现。
You have been assigned to manage a set of databases. The previous DBA did not leave you notes regarding the structure of each of the databases. While analyzing an instance， you notice that the system identifier （SID） for the instance is set to ’+ASM’. What is the purpose of this instance？（）
