ORA-00600 [qosdExpStatRead: expcnt mismatch]

Recently started seeing this error on few of the Exadata environments. ORA–00600: internal error code, arguments:[qosdExpStatRead: expcnt mismatch] Cause  This is due to sys.exp_obj$. EXP_CNT mismatch rows of sys.exp_stat$ Following SQL is used to check issue data of some objects. if there are some rows return, that means data issue. With b as ( select count(*) cnt,objn,snapshot_id from sys.exp_stat$ […]

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ORA-00600 [KUTYXTTE_TRANSFORM:FAILED]

Recently started seeing this error on few of the Exadata environments. ORA–00600: internal error code, arguments:[KUTYXTTE_TRANSFORM:FAILED] As per metalink this is a known Bug 28194173 Patch 28194173: SQL ON 12.2 QUARANTINED AND CELL THROWING ORA-00600 [KUTYXTTE_TRANSFORM:FAILED] I’ve seen this in 12.2.

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ORA-600[KCLANTILOCK_17]

Recently started seeing this error on few of the RAC environments. ORA–00600: internal error code, arguments:[ORA-600[KCLANTILOCK_17] After upgrade to 12.2, Due to this Instance got crashed. As per metalink this is a known Bug 27162390 Patch 27162390: LNX64-181-RAC: LMS HIT ORA-600[KCLANTILOCK_17], INST CRASH I’ve seen this in 12.2. As per Oracle it’s fixed in version 18.1

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ORA-600 [KDZA_CHECK_EQ NOT IN DICTIONARY]

Recently started seeing this error on few of the RAC environments. ORA–00600: internal error code, arguments:[KDZA_CHECK_EQ NOT IN DICTIONARY] As per metalink this is a known Bug 24818566 Patch 24818566: SQLLOAD FAILED WITH ORA-600 [KDZA_CHECK_EQ NOT IN DICTIONARY] I’ve seen this in 11204 ,12102,12.2 both. As per Oracle it’s fixed in version 18.1

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TNS-12547: TNS:lost contact

Being DBA we all are aware that we must have knowledge of OS level too because Database not just runs over the only one OS. In a different organization, we have a different OS. Being a part if IT we understand that different OS environment has a different parameter. We have to set them. Today […]

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ORA-12154: TNS:could not resolve the connect identifier

We are continuing with the same series of listener errors. Let’s have looked over the new error. Let’s go for the steps

Condition for error When Database is on in restricted on no mount status and you will see service handler for this instance is on BLOCKED or RESTRICTED state.

Solution: Add (UR=A) […]

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ORA-12516:TNS protocol stack in Oracle

Let’s start the series of Oracle listener. Now are going to focus over the issue for the following errors. Let’s have looked over the steps and solve the issues.

Cause: None of the known and available service handlers for the given SERVICE_NAME support the client’s protocol stack: transport, session, and presentation protocols. Solution: check […]

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ORA-12505: TNS:listener in Oracle

Being human being we have a lot of unlimited qualities. Listening is one of them. Normally we ignore it but it is most important for all. Good listing keeps us away from 99% problems away and life makes us simple but if we don’t listen properly we invite unlimited problem in our life. In same […]

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ORA-12162: TNS:net service name is incorrectly specified

Let’s have look on some listener issues in the database. Cause: The connect descriptor corresponding to the net service name in TNSNAMES.ORA or in the directory server (Oracle Internet Directory) is incorrectly specified. Action: If using local naming make sure there are no syntax errors in the corresponding connect descriptor in the TNSNAMES.ORA file. If […]

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