Find Minimum in Rotated Sorted Array Question Solution Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate exists in the ar…

choose three Which three statements are true about Oracle Data Pump? A) Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege. B) IMPDP can be used to change target data file names, schemas, and tables…

10.Which two statements are true about SQL*Loader Express Mode in an Oracle 12c database? A) It can load data in parallel. B) No data file needs to be specified. C) It loads data faster than conventional SQL*Loader. D) lt loads data more efficiently…

5.One of your databases supports an OLTP workload. The default undo tablespace is fixed size with: 1. RETENTION NOGUARANTEE 2. undo_retention is 12 minutes User scott get this error after a query on the sales table has run for more than 15 minutes: O…

4.Which four are true about creating and running a remote database scheduler jobs? A) A credential is optional for a remote database job. B) A database destination group must exist or be created for a job to run on multiple remote databases. C) A des…

choose three Your database is configured for ARCHIVELOG mode, and a daily full database backup is taken. RMAN is configured to perform control file autobackup. In which three scenarios do you need media recovery? A) loss of data files that belong to…

choose three Which three statements are true about Oracle checkpoint processing? A) Incremental checkpoints write some dirty buffers to the datafiles and unwritten redo to the online redo logs. B) Frequent thread checkpoints can degrade database perf…

choose two Your database is running in ARCHIVELOG mode. You want to take a consistent whole database backup. Which two statements are true in this scenario? A) RMAN backups contain only data files. B) The database must be in MOUNT state to take consi…

choose two Examine this command executed on a client that is remote from the database server. SQL> CONNECT hr/hr@orcl Which two are required for this command to connect the SQLPLUS client to a database instance? A) A service name must be defined to t…

choose one Which users are created and can be used for database and host management of your DBaaS database servers? A) cloud and oracle users B) root, oracle and cloud users C) root and oracle users D) opc and oracle users E) root, opc and oracle use…

choose one In your Oracle 12c database, you plan to execute the command: SQL> CREATE TABLESPACE tbsl DATAFILE '/u02/oracle/data/tbs0l.dbf' SIZE 50M; The u02 file system has 1 GB of free space available. What is the outcome? A) It raises an error beca…

choose two You plan to upgrade your Oracle Database 9i to Oracle Database 12c. Which two methods can you use? A) Perform a direct upgrade by manually running the catctl.pl and catupgrd.sql scripts before issuing the STARTUPUPGRADE command. B) Upgrade…

12. Your database is configured in archivelog mode. Examine the RMAN configuration parameters: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default CONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default CONFIGUR…

11.Your database is in archivelog mode. You want to disable archiving for the database. Examine these steps: 1. Execute the alter database noarchivelog command. 2. Execute shutdown immediate. 3. Execute startup mount. 4. Set the db_recovery_file_dest…

9.You ran this command on a source database: $> expdp hr/hr DIRECTORY=dumpdir DUMPFILE=empl.dmp VIEWS_AS_TABLES=emp_dept On the target database, you run this command: impdp hr/hr DIRECTORY=dumpdir DUMPFILE=empl.dmp VIEWS_AS_TABLES=emp_dept Which two…

8. Which are two ways for a database service to be recognized by a listener in Oracle Database 12c? A) Static registration in the listener.ora file using the service_name parameter B) Dynamic Registration by the smon process C) Static registration in…

7.daily_ords_lst is created in locally managed tablespace ORDERS_TBS which uses automatic segment space management. CREATE TABLE daily_ords_list (ordno NUMBER, ord_date DATE) PCTFREE 20; Which two are true ? A) 80% of every data block in daily_ords_l…

6.Which four statements are true about database instance behavior? A) Redo log files can be renamed in mount state. B) Datafiles can be renamed in mount state. C) All dynamic performance views (v$ views) return data when queried from a session connec…

3.A database is open read write and the instance has multiple sessions some of which have active transactions. You execute this command: SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION; Which three are true about the active transactions? A) They may cont…

5.Which two affect the time taken for instance recovery? A) size of redo logs B) size of UNDO tablespace C) FAST_START_MTTR_TARGET value D) size of archivelogs E) size of existing RMAN backupsets F) UNDO_RETENTION value Answer:AC…

29.In one of your databases: * The database default tablespace is EXAMPLE. * Deferred_segment_creation is false. Examine these commands: SQL> create user user1 identified by oracle_4u password expire; User created. SQL> alter user user1 account unlo…

24. YOUR DB_RECOVERY_FILE_DEST_SIZE Is 8G. Currently, 5G of the space Is used of which 4G consists of obsolete backups. You execute this command: SQL> ALTER SYSTEM SET db_recovery_file_dest_size=2G; What is the outcome? A) It changes DB_RECOVERY_FILE…

17.Which two statements are true about tablespaces? A) A database can contain multiple undo tablespaces. B) A database can contain only a single temporary tablespace. C) A database instance stores undo data In the SYSTEM tablespace If no undo tablesp…

13.Which two are true about AWR snapshots? A) They are stored In the SYSAUX tablespace. B) They are not generated if STATISTICS_LEVEL Is set to TYPICAL. C) They can be modified by using DMLs. D) They can be retained forever. E) They are always create…

百篇博客系列篇.本篇为: v13.xx 鸿蒙内核源码分析(源码注释篇) | 鸿蒙必定成功,也必然成功 | 51.c.h .o 几点说明 kernel_liteos_a_note | 中文注解鸿蒙内核 是在 OpenHarmony 的 kernel_liteos_a 基础上给内核源码加上中文注解的版本.与官方源码按月保持同步,同步历史如下: 2021/9/02 -- trace模块较大更新 2021/8/19 -- 各目录增加了BUILD.gn文件,文件系统部分文件调整 2021/7/15 --…

Find Minimum in Rotated Sorted Array II Follow up for "Find Minimum in Rotated Sorted Array":What if duplicates are allowed? Would this affect the run-time complexity? How and why?Suppose a sorted array is rotated at some pivot unknown to you be…

65.(22-16) choose the best answer: The CUSTOMERS table has the following structure: You need to write a query that does the following tasks: 1. Display the first name and tax amount of the customers. Tax is 5% of their credit limit. 2. Only those cus…

题都城南庄_古诗文网 题都城南庄 唐代:崔护 去年今日此门中,人面桃花相映红.去年春天,就在这扇门里,姑娘脸庞,相映鲜艳桃花.人面:指姑娘的脸.第三句中“人面”指代姑娘. 人面不知何处去,桃花依旧笑春风.今日再来此地,姑娘不知去向何处,只有桃花依旧,含笑怒放春风之中.不知:一作“秖(zhǐ)今”.去:一作“在”.笑:形容桃花盛开的样子. 参考资料: 1. 彭定求 等．全唐诗(上)．上海:上海古籍出版社,1986:919 2. 于海娣 等．唐诗鉴赏大全集．北京:中国华侨出版社,2010:235-2…

1 什么是CKA CKA,即Certificated Kubernetes Administrator,CNCF官方提供的Kubernetes技能认证,含金量还是不错的.还有CKAD,相对简单一些,没有必要两个都考.最近还出了CKS,难度很大,含金量最高,必须拿到CKA才可以去考. CKA最近改版了,变更了许多,题目和难度都不一样,本文就改版后的考试心得做个简单梳理. 2 考试基本情况与建议 整理了一下官方的信息: 考试费用为300美元,中文是2088,差不多: 考试时长为2小时,满分100分,…

解析:使用final修饰的成员变量是常量 解析:不存在StateMoreSession的对象 解析:一个PreparedStatement 可以执行多次executQuery方法 解析:A   使用HQL处理海量数据性能极低,不能采用这种方式. B.  JDBC API性能最好,最适合处理海量数据. C.  如果一次性flush,Hibernate会将操作的对象全部放到自身的内部缓存,将会造成内存溢出,所以也不能采用这种方式. D.  如果分为多次flush,可及时将缓存清除,也不失为一种办法.…