The block-related wait event statistics indicate that a block was received as either the result of a 2-way or a 3-way message, that is, the block was sent from either the resource master requiring 1 message and 1 transfer, or was forwarded to a third node from which it was sent, requiring 2 messages and […]
All posts by Jagruti Jasleniya
Jagruti Jasleniya
Check os processid of your session from sql prompt.
To check os processid of oracle session , we can check v$process view. SPID column of v$process view shows os processid. We can use following query to check processid, status for specific user. select p.spid, s.username, s.status, s.server, to_char(s.logon_time,’DD-MON-YY HH24:MI’) from v$process p, v$session s where p.addr = s.paddr and s.status=’ACTIVE’ ; I have connected […]
Basic on Oracle RAC wait events
Analyzing and interpreting what causes sessions to wait is an important method to determine where time is spent. In Oracle RAC, the wait time is attributed to an event which reflects the exact outcome of a request. For example, when a session on an instance is looking for a block in the global cache, it […]
Find corrupted objects in Oracle using sql query
Find corrupted objects in Oracle using sql query : When you find block corruption in your database use validate database or validate check logical database command of RMAN, it will populate v$database_block_corruption view with corrupted blocks. Then you can check corrupted segments , its partition name and more details using following script. SELECT e.owner, e.segment_type, […]
Archive log delete input and delete all input
Archive log mode : This mode created backup of all transactions that have occurred in the database , so that you can recover your database to any point in time. These logs consumes space in respective destination. To utilize storage , we can remove archive log with RMAN command delete input or delete all input […]
check os process id of your session from sql prompt.
Check os process id of your session from sql prompt. select p.spid, s.username, s.status, s.server, to_char(s.logon_time,’DD-MON-YY HH24:MI’) from v$process p, v$session s where p.addr = s.paddr and s.status=’ACTIVE’; SPID USERNAME STATUS SERVER ———————— —————————— ——– ——— TO_CHAR(S.LOGON_TIME,’DD-MON-YYHH24:MI’) ————————————————————————— 18658 TEST1 ACTIVE DEDICATED 08-JAN-18 15:07 18664 TEST1 ACTIVE DEDICATED 08-JAN-18 15:07 23691 TEST1 ACTIVE DEDICATED 08-JAN-18 […]
Create Database using DBCA silent mode
DBCA is great tool to create database using GUI , but sometimes when we don’t have access to GUI, we can still create database using DBCA silent mode creation where you need to pass silent option with dbca and some parameter values to create database. In following example we have used template General_Purpose , […]
RMAN maxpiecesize command
Use of RMAN maxpiecesize command To avoid large size of backupset we can set maxpiecesize of rman backup piece. I have taken following backup without setting any parameter : RMAN> backup database; Starting backup at 29-DEC-17 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=8 device type=DISK channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) […]
ORA-16179 incremental changes to “log_archive_dest_10” not allowed with SPFILE
You might encounter ORA-16179 error while changing the archive destination. SQL> alter system set log_archive_dest_10=’d:\oracle\arc\dbtest\’; alter system set log_archive_dest_10=’d:\oracle\arc\dbtest\’ * ERROR at line 1: ORA-32017: failure in updating SPFILE ORA-16179: incremental changes to “log_archive_dest_10” not allowed with SPFILE There is syntax error in above command . It should be like log_archive_dest_n [n is a integer […]
Difference between .bashrc and .bash_profile
Difference Between .bashrc and .bash_profile : We use .bashrc and .bash_profile frequently to set environment for Oracle. Here is the difference between both files ,which file is used when . location of .bashrc : /home/username/.bashrc location of .bash_profile : /home/oracle/.bash_profile .bashrc : This file is executed for non-login shells . .bash_profile : This file is executed […]