How many individual archive-log destination directories are supported by Oracle Database11g?（） 7 。 1 。 10 。 11 。 21。
充装人员应根据（）随时调整秤砣的位置。 充装量；。 充装压力；。 钢瓶自重。
Your Oracle Database 10g is online when you execute the following statement： SQL>ALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF； What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（） The database does not record flashback logs for MY_TABLESPACE。 The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.。 All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.。 None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE。
儿童游戏中，角色扮演的发生、发展过程所遵循的途径是（） 角色认知——角色意识——角色行为。 角色行为——角色意识——角色认知。 角色认知——角色行为——角色意识。 角色行为——角色认知——角色意识。
The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management （ASM） instance. SQL> STARTUP； Which two activities are performed during a successful start up operation？（） The databases configured to use the ASM instance are mounted。 The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter。 ASM starts the Oracle Cluster Synchronization Services （CSS） daemon if it is not started 。 ASM discovers and examines the contents of all files that are in the paths specified in the ASM_DISKGROUPS initialization parameter。
Identify two situations in which the block header grows in a data block. （）
