00054.Oracle重做日志信息获取

SQL> desc v$log

Name Null? Type

----------------------------------------- ------------------------------------

GROUP# NUMBER

THREAD# NUMBER

SEQUENCE# NUMBER

BYTES NUMBER

BLOCKSIZE NUMBER

MEMBERS NUMBER

ARCHIVED VARCHAR2(3)

STATUS VARCHAR2(16)

FIRST_CHANGE# NUMBER

FIRST_TIME DATE

NEXT_CHANGE# NUMBER

NEXT_TIME DATE

SQL> col statusfor a15

SQL>select group#,sequence#,members,bytes,status,archived from v$log;

GROUP# SEQUENCE# MEMBERS BYTES STATUS ARCHIV

-------------------- ---------- ---------- --------------- ------

1 37 1 524288000 CURRENT NO

2 35 1 524288000 INACTIVE YES

3 36 1 524288000 INACTIVE YES

SQL> desc dict

Name Null? Type

------------------------------------------------- ----------------------------

TABLE_NAME VARCHAR2(30)

COMMENTS VARCHAR2(40000)

SQL> coltable_name for a50

SQL> colcomments for a50

SQL> set line120

SQL> col table_namefor a25

SQL> set line130

SQL> select table_name,comments from dict where table_name like '%v$logf%';

TABLE_NAME COMMENTS

----------------------------------------------------------------------------------------------------

V$LOGFILE Synonym for V_$LOGFILE

GV$LOGFILE Synonym for GV_$LOGFILE

S SQL> desc v$logfile

Name Null? Type

----------------------- -------- --------------

GROUP# NUMBER

STATUS VARCHAR2(7)

TYPE VARCHAR2(7)

MEMBER VARCHAR2(513)

IS_RECOVERY_DEST_FILE VARCHAR2(3)

SQL> col memberfor a30

SQL> select group#,status,type,member from v$logfile;

GROUP# STATUS TYPE MEMBER

------------------------- --------------- ------------------------------

3 ONLINE /home/oracle/oracle/oradata/md

sp/redo03.log

2 ONLINE /home/oracle/oracle/oradata/md

sp/redo02.log

1 ONLINE /home/oracle/oracle/oradata/md

sp/redo01.log