梦想有多远

• 先介绍下managed_standby和日志应用有关

desc v$managed_standby;
 Name                                      Null?    Type
 —————————————– ——– —————————-
 PROCESS                                            VARCHAR2(9)
 PID                                                NUMBER
 STATUS                                             VARCHAR2(12)
 CLIENT_PROCESS                                     VARCHAR2(8)
 CLIENT_PID                                         VARCHAR2(40)
 CLIENT_DBID                                        VARCHAR2(40)
 GROUP#                                             VARCHAR2(40)
 RESETLOG_ID                                        NUMBER
 THREAD#                                            NUMBER
 SEQUENCE#                                          NUMBER
 BLOCK#                                             NUMBER
 BLOCKS                                             NUMBER
 DELAY_MINS                                         NUMBER
 KNOWN_AGENTS                                       NUMBER
 ACTIVE_AGENTS                                      NUMBER通过我们都会查看PROCESS,STATUSSQL> select process,status from v$managed_standby; PROCESS   STATUS——— ————ARCH      CLOSINGARCH      CLOSINGRFS       IDLEMRP0      WAIT_FOR_LOGRFS       IDLERFS       IDLE

其中process列如下选项：

·         RFS - Remote file server（负责接收远程日志文件）·         MRP0 - Detached recovery server process（负责应用恢复接收的日志·         MR(fg) - Foreground recovery session·         ARCH - Archiver process·         FGRD·         LGWR·         RFS(FAL)·         RFS(NEXP)·         LNS network server processSTATUS列有如下选项：·         UNUSED - No active process·         ALLOCATED - Process is active but not currently connected to a primary database·         CONNECTED - Network connection established to a primary database·         ATTACHED - Process is actively attached and communicating to a primary database·         IDLE - Process is not performing any activities·         ERROR - Process has failed·         OPENING - Process is opening the archived redo log·         CLOSING - Process has completed archival and is closing the archived redo log（标示当前没有可应用归档日志）·         WRITING - Process is actively writing redo data to the archived redo log·         RECEIVING - Process is receiving network communication·         ANNOUNCING - Process is announcing the existence of a potential dependent archived redo log·         REGISTERING - Process is registering the existence of a completed dependent archived redo log·         WAIT_FOR_LOG - Process is waiting for the archived redo log to be completed（一般正常状态）·         WAIT_FOR_GAP - Process is waiting for the archive gap to be resolved·         APPLYING_LOG - Process is actively applying the archived redo log to the standby databasesequence#列：如果日志应用出现什么问题，可以查看在等待那个日志应用

 和数据文件管理相关的视图

v$archive_gap 主要可以用来查看备库丢失了那些日志

desc v$archive_gap;
 Name                                      Null?    Type
 —————————————– ——– —————————-
 THREAD#                                            NUMBER
 LOW_SEQUENCE#                                      NUMBER
 HIGH_SEQUENCE#                                     NUMBER

如果有GAP可以手动注册日志，alter database register logfile ‘文件名’

配置了FAL_SERVER FAL_CLIENT就没问题

shou

如果日志无法传送，可以查看 v$archive_dest;

 select dest_name,status,error from v$archive_dest

DEST_NAME            STATUS     ERROR
——————– ———- ——————————
LOG_ARCHIVE_DEST_1   VALID
LOG_ARCHIVE_DEST_2   VALID
LOG_ARCHIVE_DEST_3   INACTIVE
LOG_ARCHIVE_DEST_4   INACTIVE
LOG_ARCHIVE_DEST_5   INACTIVE
LOG_ARCHIVE_DEST_6   INACTIVE
LOG_ARCHIVE_DEST_7   INACTIVE
LOG_ARCHIVE_DEST_8   INACTIVE
LOG_ARCHIVE_DEST_9   INACTIVE
LOG_ARCHIVE_DEST_10  INACTIVE
STANDBY_ARCHIVE_DEST VALID

如果状态 为VALID说明没问题 ，如果有错误则更具ERROR里信息处理：

v$archive_dest_status视图可以查看备库的状态，保护模式，归档日志路径状态

  select dest_name,status,database_mode,recovery_mode,protection_mode from v$archive_dest_status

DEST_NAME            STATUS     DATABASE_MODE        RECOVERY_MODE        PROTECTION_MODE
——————– ———- ——————– ——————– ——————–
LOG_ARCHIVE_DEST_1   VALID      MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_2   VALID      MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_3   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_4   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_5   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_6   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_7   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_8   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_9   INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
LOG_ARCHIVE_DEST_10  INACTIVE   MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE
STANDBY_ARCHIVE_DEST VALID      MOUNTED-STANDBY      MANAGED              MAXIMUM PERFORMANCE

v$archived_log可以查看日志的一些信息 ，包括日志名字，应用时间，是否应用

select first_time,applied,sequence#,status,next_time from v$archived_log

FIRST_TIM APP  SEQUENCE# STATUS     NEXT_TIME
——— — ———- ———- ———
06-DEC-07 YES         37 A          06-DEC-07
06-DEC-07 YES         38 A          06-DEC-07
06-DEC-07 YES         39 A          06-DEC-07
06-DEC-07 YES         40 A          07-DEC-07
07-DEC-07 YES         41 A          07-DEC-07
07-DEC-07 YES         42 A          07-DEC-07
07-DEC-07 YES         43 A          07-DEC-07
07-DEC-07 YES         44 A          07-DEC-07
07-DEC-07 YES         45 A          07-DEC-07

9 rows selected.

This entry was posted on 星期五, 十二月 7th, 2007 at 12:54 and is filed under oracle. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.