增长极理论
According to your backup strategy， you performed an incremental level 0 backup of yourdatabase. Which statement regarding this backup is true？（） The backup is similar to image copy.。 The backup contains all used data blocks.。 The backup contains only unused data blocks.。 The backup contains all data blocks changed since the last incremental level 1 backup.。
Your database contains two temporary tablespaces named TEMP and TEMP1. The TEMP tablespace is the default temporary tablespace for the database， and the TEMP1 tablespace was created at database creation. You want to increase the size of the tempfile for the TEMP tablespace and drop the TEMP1 tablespace from the database. The database is not using Oracle-Managed Files （OMF）. Which statement must you use to ensure that when you drop the TEMP1 tablespace from the database， its corresponding operating system file is also deleted？（） DROP TABLESPACE temp1；。 DROP TABLESPACE temp1 INCLUDING CONTENTS；。 DROP TABLESPACE temp1 INCLUDING CONTENTS AND DATAFILES；。 DROP TABLESPACE temp1 INCLUDING CONTENTS CASCADE CONSTRAINTS；。
双作用式压缩机，活塞在一个冲程内吸入和排出（）次气体。
Which step do you need to perform to enable a user with the SYSDBA privilege to log in as SYSDBA in iSQL*Plus？（） The user must be granted the database administrator （DBA） privilege.。 The user must be listed in the password file for the authentication.。 No special setup is needed for the user to connect as SYSDBA in iSQL*Plus.。 Set up a user in the Oracle Application Server Containers for J2EE （OC4J） user manager，and grant the webDba role to the user.。
本侧高频保护故障时，对侧高频保护（）。
