How to stop OCSSD Daemon
/etc/init.d/init.cssd stop to stop cssd process.
Category: SQL scripts
sess_server.sql
column osuser format a10 column username format a30 column machine format a30 column program format a50 set lines 132 set pages 500 select osuser, username, machine, program from v$session; select machine, username, count(1) from v$session group by machine, username;
My Minimum Tuning Programs
REM ***** gsp.sql ***** REM ***** This is used to get SPID from SID. col username format a30 col machine format a20 col program format a40 accept _sid prompt ‘Enter Oracle Session ID ->’ select a.sid, b.pid, b.spid, a.username,a.program,a.machine from v$session a,V$process b where a.paddr = b.addr and a.sid = &_sid / REM ***** gsq.sql…
How to find who is using which Rollback segment and how many rows or blocks in that rollback segments,
Using following query, we can estimate # of rows resides in each USN (Rollback Segment) and who fired that transactions. New modified GCU.sql on 16-JUN-2006 /* Get Curent USN */ column start_dt format a20 set lines 132 select /*+ ALL_ROWS */ a.usn, a1.name, a.extents, a.hwmsize, a.status usn_status, to_char(b.start_date, ‘DD-MON-RRRR:HH24:MI:SS’) start_dt, b.status tx_status, c.sid, c.sql_id, b.used_ublk,…
How to Decide upto what level you can decrement your datafile size. ( Shrink Datafile)
We can directly resize datafiles TEST.SQL>SELECT FILE_NAME, BYTES FROM DBA_DATA_FILES WHERE TABLESPACE_NAME=’SYSTEM’; FILE_NAME BYTES —————- ———- /…/dbsGNX.dbf 419430400 TEST.SQL>ALTER DATABASE DATAFILE ‘/…/dbsGNX.dbf’ RESIZE 390M; Database altered. TEST.SQL>SELECT FILE_NAME, BYTES FROM DBA_DATA_FILES WHERE TABLESPACE_NAME=’SYSTEM’; FILE_NAME BYTES ————— ———- /…/dbsGNX.dbf 408944640 But the minimum file size is the size of the extend the furthest in the datafile:…
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How to find the real execution plan and binds used in that explain plan in Oracle 10g??
Step-1 : Find the Query and its SQL_ID to trace from AWR reports. Step-2 : Execute following query to find real execution plan: SELECT LPAD(‘ ‘,2*(LEVEL-1))||operation||’ ‘||options ||’ ‘||object_name ||’ ‘|| DECODE(id, 0, ‘Cost = ‘||position) “Query Plan” FROM v$sql_plan START WITH id = 0 and sql_id=’8ska10yfjx4b5′ CONNECT BY PRIOR id = parent_id and sql_id=’8ska10yfjx4b5′;…
How to find pinned objects from shared pool. (pinned via dbms_shared_pool.keep)
SELECT owner, name, type FROM v$db_object_cache WHERE kept = ‘YES’ AND TYPE = ‘CURSOR’;
how to find OS block size
13:01:01 SYS@AWRTEST:-> select lebsz from x$kccle; LEBSZ ——— 512 512 512 3 rows selected. or df -g on unix prompt.
Oracle Identifiers
Oracle Identifiers: =================== In order not to make using Oracle confusing, there are some identifiers whose meaning must be totally clear if one want to work on Oracle: SID (System Identifier): ======================== A SID (almost) uniquely identifies an instance. Actually, $ORACLE_HOME, $ORACLE_SID and $HOSTNAME identify an instance uniquely. The SID is 64 characters, or less;…
DETERMINING WHICH INSTANCE OWNS WHICH SHARED MEMORY & SEMAPHORE SEGMENTS
To obtain the shared memory id and semaphore id for 8.1.X you can do either of the following: $ORACLE_HOME/bin/sysresv IPC Resources for ORACLE_SID “V817” : Shared Memory: ID KEY 14851 0x8a85a74c Semaphores: ID KEY 11206656 0x4bd4814c Oracle Instance alive for sid “V817” OR %sqlplus internal SQL> oradebug ipc Information written to trace file. Trace file…
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