停止crs资源。

[root@rac-two bin]# ./crsctl stop crs

启动到独占模式且不启动ora.crsd:

[root@rac-two bin]# ./crsctl start crs -excl -nocrs  

创建磁盘组：

[root@rac-two bin]# su - grid

[grid@rac-two ~]$ sqlplus / as sysasm

首先要恢复的是ocr

[root@rac-two bin]# ./ocrconfig -restore /u01/app/11.2.0/grid/cdata/rac-two-cluster/backup00.ocr

[root@rac-two bin]# ./ocrcheck

恢复votedisk：

[root@rac-two bin]# ./crsctl query css votedisk

提示失败，需要重启crs资源。

[root@rac-two bin]# ./crsctl stop crs

[root@rac-two bin]# su - grid

[grid@rac-two ~]$ sqlplus / as sysasm

[grid@rac-two ~]$ exit

[root@rac-two bin]# ./ocrctl replace votedisk +GIDG  

[root@rac-two bin]# ./crsctl replace votedisk +GIDG 

至此完成了ocr和votedisk的恢复。

重启crs

1.Oracle集群日志的文件路径

Oracle集群涉及的日志主要位于“$GRID_HOME/log”和“$ORACLE_HOME/log”目录中。

2.日志目录结构

clusterware 层的日志结构：

grid@rac1:/home/grid>tree -d $ORACLE_HOME/log

/opt/rac/11.2.0/grid/log

|-- crs

|-- diag

| `-- clients

| `-- user_root

| `-- host_1874443374_76

| |-- alert

| |-- cdump

| |-- incident

| |-- incpkg

| |-- lck

| |-- metadata

| |-- stage

| |-- sweep

| `-- trace

`-- rac1

|-- admin

|-- agent

| |-- crsd

| | |-- oraagent_grid

| | |-- oraagent_oracle

| | `-- orarootagent_root

| `-- ohasd

| |-- oraagent_grid

| |-- oracssdagent_root

| |-- oracssdmonitor_root

| `-- orarootagent_root

|-- client

|-- crsd

|-- cssd

|-- ctssd

|-- diskmon

|-- evmd

|-- gipcd

|-- gnsd

|-- gpnpd

|-- mdnsd

|-- ohasd

|-- racg

| |-- racgeut

| |-- racgevtf

| `-- racgmain

`-- srvm

42 directories

RMDBS 层的日志结构：

oracle@rac1:/opt/rac/oracle/diag/rdbms/rac>tree -d rac1

rac1

|-- alert

|-- cdump

|-- hm

|-- incident

|-- incpkg

|-- ir

|-- lck

|-- metadata

|-- stage

|-- sweep

`-- trace

11 directories

其中“rac1”是主机名。

3.日志目录功能说明

1）CRS日志存放在“$GRID_HOME/log/<hostname>/crsd”目录，系统会对该日志每10M进行归档一次；

2）CSS日志存放在“$GRID_HOME/log/<hostname>/cssd”目录，系统会对该日志每20M进行归档一次；

3）EVM日志存放在“$GRID_HOME/log/<hostname>/evmd”目录；

4）“$GRID_HOME/log/<hostname>”和“$ORACLE_HOME/log/<hostname>”目录中的racg目录中记录了RACG可执行文件对应的日志；

5）“$GRID_HOME/log/<hostname>/client”和“$ORACLE_HOME/log/<hostname>/client”目录记录了与srvctl、ocrdump、ocrconfig以及ocrcheck命令对应的日志信息。

4.Oracle集群的alert日志

Oracle RAC环境中的alert日志文件与Oracle单实例的alert日志一样。该文件位于“在 $ORACLE_BASE/rdbms/<hostname>/trace”目录下，命名规则为“alert_<nodename>.log”

该警告日志记录了有关Oracle集群rdbms 层面的重要警告信息。

oracle@rac1:/opt/rac/oracle/diag/rdbms/rac/rac1/trace>more alert_rac1.log

Starting up:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

With the Partitioning, Real Application Clusters, OLAP, Data Mining

and Real Application Testing options.

Using parameter settings in client-side pfile /opt/rac/oracle/admin/rac/pfile/init.ora on machine rac1

System parameters with non-default values:

processes= 150

nls_language = "SIMPLIFIED CHINESE"

nls_territory= "CHINA"

memory_target= 1584M

control_files= "+DATA2/rac/controlfile/current.260.781821965"

db_block_size= 8192

compatible = "11.2.0.0.0"

log_archive_dest_1 = "LOCATION=+DATA2"

log_archive_format = "yangdb_%t_%s_%r.dbf"

db_create_file_dest = "+DATA2"

undo_tablespace = "UNDOTBS1"

instance_number = 1

remote_login_passwordfile= "EXCLUSIVE"

db_domain= ""

dispatchers = "(PROTOCOL=TCP) (SERVICE=racXDB)"

remote_listener = "scan:1521"

audit_file_dest = "/opt/rac/oracle/admin/rac/adump"

audit_trail = "DB"

db_name = "rac"

open_cursors = 300

diagnostic_dest = "/opt/rac/oracle"

Cluster communication is configured to use the following interface(s) for this instance

10.10.10.10

cluster interconnect IPC version:Oracle UDP/IP (generic)

IPC Vendor 1 proto 2

Sat Apr 28 20:50:38 2012

PMON started with pid=2, OS id=16042

Sat Apr 28 20:50:38 2012

VKTM started with pid=3, OS id=16044 at elevated priority

VKTM running at (10)millisec precision with DBRM quantum (100)ms

Sat Apr 28 20:50:39 2012

GEN0 started with pid=4, OS id=16048

Sat Apr 28 20:50:39 2012

DIAG started with pid=5, OS id=16050

Sat Apr 28 20:50:39 2012

DBRM started with pid=6, OS id=16052

5.小结

熟悉Oracle集群环境下日志文件的位置和功能有助于快速定位故障的位置，善用之。

ORA-29780: unable to connect GPnP daemon [CLSGPNP_ERR]

安装完成 11GR2 Grid 之后，使用asmca创建磁盘组的时候遇到如下报错：

Started getting following error

ORA-29780: unable to connect to GPnP daemon [CLSGPNP_ERR]

google 一把 和环境变量有关：(CRS/GRID 是运行正常的).

grid@rac1 /oragrid/dbs>env | grep ORA

GRID_HOME=/opt/11.2.0/grid <====== 从老的bash_profle 中继承的！

ORACLE_SID=+ASM1

ORACLE_BASE=/opt/rac/grid

ORACLE_HOME=/opt/rac/11.2.0/grid

$GRID_HOME变量必须和$ORACLE_HOME 保持一致,否则在使用asmca创建磁盘的时候 会认不到asm 磁盘!