You have configured flash recovery area in your database and you set the following Initialization parameters for your database instance： LOG_ARCHIVE_DEST 1 = ，，LOCATION=/disk1/arch MANDATORY’ LOG _ARCHIEVE_DEST 2 = ，，LOCATION=/disk2/arch’ LOG_ARCHIVK_DEST_3 = ，，LOCATION=/diSk3/arch LOG_ARCH1VK_DEST_4 = ’ LOCATION=/disk4/arch’ LOG_ARCHIVE_MIN-SUCCEED_DEST = 2 While the database instance is functional，you realized that the destination set by the LOG_ARCHIVE_DEST_I parameter Is not available for the archived redo log file to be created in. All redo log groups have been used. What happens in an event of log switch？（） The online redo log file Is not allowed to be overwritten.。 The archived redo log files are written to the flash recovery area until the MANDATORY destination is made available.。 The database instance will crash because the archived redo log file cannot be created in a destination set as MANDATORY.。 The destination set by the LOG_ARCHIVE_DEST_1 parameter is ignored and the archived redo log files are created in the next two available locations to guarantee archive log success.。
为什么容易产生监狱暴力从心理学角度如何避免这种暴力现象的发生
You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10. You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11. You executed the following RMAN commands: RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1; What happens when you execute the above commands?（） They deregister all databases registered in the RCAT10 catalog.。 They import metadata for all registered databases in the RCAT10 database.。 They register all the RCAT10-catalog registered databases in the RCO11 catalog.。 They overwrite all stored scripts in the RCO11 catalog with the same name as that in the RCAT10 catalog.。
双馈异步风电机组低电压穿越时，通过控制（）导通、截止来启动、切除（）电路来保证机组在电压跌落的暂态下仍安全稳定运行。
In your datawarehousing application， you generate reports frequently. The data is static in the tables being used to generate reports. You are currently using joins， resulting in a large performance overhead. What kind of database structure would you use to reduce the response time of the query？（） hash clusters。 index clusters。 partitioned tables。 indexorganized table （IOT）。
下列不同类群的微生物中，属于非细胞形态的微生物是（）
