标签归档:open ora-01555

数据库open过程遭遇ORA-1555对应sql语句补充

在2015年的在数据库open过程中常遇到ORA-01555汇总文章中写过oracle open过程中可能会遇到ORA-01555错误,对应的sql语句.最近的恢复中又遇到两个新的,对其进行补充
select rowcnt,blkcnt,empcnt,avgspc,chncnt,avgrln,nvl(degree,1), nvl(instances,1) from tab$ where obj# = :1

Thu May 09 02:10:27 2019
SMON: enabling cache recovery
ORA-01555 caused by SQL statement below (SQL ID: bqbdby3c400p7, SCN: 0x0000.3e785fc7):
select rowcnt,blkcnt,empcnt,avgspc,chncnt,avgrln,nvl(degree,1), nvl(instances,1) from tab$ where obj# = :1
Errors in file /home/u01/diag/rdbms/orcl/orcl/trace/orcl_ora_15929.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 91 with name "_SYSSMU91_1360910548$" too small
Errors in file /home/u01/diag/rdbms/orcl/orcl/trace/orcl_ora_15929.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 91 with name "_SYSSMU91_1360910548$" too small
Error 704 happened during db open, shutting down database
USER (ospid: 15929): terminating the instance due to error 704
Instance terminated by USER, pid = 15929
ORA-1092 signalled during: alter database open resetlogs...
opiodr aborting process unknown ospid (15929) as a result of ORA-1092
Thu May 09 02:10:28 2019
ORA-1092 : opitsk aborting process

select obj#,type#,ctime,mtime,stime, status, dataobj#, flags, oid$, spare1, spare2 from obj$ where owner#=:1 and name=:2 and namespace=:3 and remoteowner is null and linkname is null and subname is null

NSA2 started with pid=41, OS id=32571518 
ORA-01555 caused by SQL statement below (SQL ID: 3nkd3g3ju5ph1, Query Duration=0 sec, SCN: 0x0005.e4bea784):
select obj#,type#,ctime,mtime,stime, status, dataobj#, flags, oid$, spare1, spare2 from 
    obj$ where owner#=:1 and name=:2 and namespace=:3 and remoteowner is null and linkname is null and subname is null
Errors in file /u01/app/oracle/diag/rdbms/xifenfei_std/xifenfei/trace/xifenfei_ora_18939904.trc:
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 2
ORA-01555: snapshot too old: rollback segment number 7 with name "_SYSSMU7_542380376$" too small
Errors in file /u01/app/oracle/diag/rdbms/xifenfei_std/xifenfei/trace/xifenfei_ora_18939904.trc:
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 2
ORA-01555: snapshot too old: rollback segment number 7 with name "_SYSSMU7_542380376$" too small
Error 704 happened during db open, shutting down database
USER (ospid: 18939904): terminating the instance due to error 704
Instance terminated by USER, pid = 18939904
ORA-1092 signalled during: alter database open RESETLOGS...
opiodr aborting process unknown ospid (18939904) as a result of ORA-1092
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在数据库open过程中常遇到ORA-01555汇总

在数据库open的过程中,select ctime, mtime, stime from obj$ where obj# = :1语句报ORA-01555错误,数据库无法正常open
一般情况下会报某个回滚段,但是这里ORA-01555: snapshot too old: rollback segment number 0 with name “SYSTEM” too small这里直接报了system(系统回滚段),属于少见情况

Fri Jun 26 11:47:31 2015
SMON: enabling cache recovery
Fri Jun 26 11:47:31 2015
ORA-01555 caused by SQL statement below (SQL ID: 4krwuz0ctqxdt, SCN: 0x0b41.37629378):
Fri Jun 26 11:47:31 2015
select ctime, mtime, stime from obj$ where obj# = :1
Fri Jun 26 11:47:31 2015
Errors in file /orabin/admin/doocrm/udump/doocrm_ora_5046722.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 0 with name "SYSTEM" too small
Error 704 happened during db open, shutting down database
USER: terminating instance due to error 704
Instance terminated by USER, pid = 5046722
ORA-1092 signalled during: alter database open resetlogs...

在数据库open的过程中,select increment$,minvalue,maxvalue,cycle#,order$,cache,highwater,audit$,flags from seq$ where obj#=:1语句上报ORA-01555,导致数据库open失败
ORA-01555



在数据库open过程中,select /*+ rule */ name,file#,block#,status$,user#,undosqn,xactsqn,scnbas,scnwrp,DECODE(inst#,0,NULL,inst#),ts#,spare1 from undo$ where us#=:1语句导致数据库open失败.

ARC0: Becoming the 'no SRL' ARCH
Sun Jun 28 16:08:22 2015
ARC1: Becoming the heartbeat ARCH
Sun Jun 28 16:08:22 2015
SMON: enabling cache recovery
Sun Jun 28 16:08:22 2015
ORA-01555 caused by SQL statement below (SQL ID: 7bd391hat42zk, Query Duration=0 sec, SCN: 0x0d27.0a1ce29d):
Sun Jun 28 16:08:22 2015
select /*+ rule */ name,file#,block#,status$,user#,undosqn,xactsqn,scnbas,scnwrp,
   DECODE(inst#,0,NULL,inst#),ts#,spare1 from undo$ where us#=:1
Sun Jun 28 16:08:22 2015
Errors in file /oracle/app/oracle/admin/ibsscrm/udump/xxxx_ora_30212428.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-01555: snapshot too old: rollback segment number 0 with name "SYSTEM" too small
Error 604 happened during db open, shutting down database
USER: terminating instance due to error 604
Instance terminated by USER, pid = 30212428
ORA-1092 signalled during: alter database open...

出现这类问题,一般是由于obj$,seq$,undo$等基表上对象scn大于数据库当前scn或者是由于这些表上有事务未提交,出现上述两种情况,数据库需要找对应的undo的回滚段中记录,而此时对应的回滚段异常(或者是由于redo未进行正常前滚,导致上述对象或者回滚段记录不正常),从而出现类似情况,一般出现此类情况,可以通过10046定位到block,然后故障原因采用bbed修改scn或者bbed提交事务来解决此类问题.
最近两年的恢复中又遇到一些ora-00704 ora-00604 ora-01555的错误,导致数据库无法正常open,对其进行补充,具体参见:数据库open过程遭遇ORA-1555对应sql语句补充

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