ORA-29278 When Trying to Use SMTP with GMail

Hi all,
Some time ago I got reached by a client with this error to send SMTP emails using GMail service with a wallet.
This is a generic error, in general the string identified the error returned from email service layer.

# Generic:

ORA-29278: SMTP transient error: string

# Error I was facing:

ORA-29278: SMTP transient error: 421 Service not available

Basically it was related to some intermittence on GMail’s service and got back to normal after a while. This is also well documented in this post by Hâvard Kristiansen.
However, I couldn’t use scripts there because of my wallet. Then I found the very useful commands below, that is what I want to share with you:

# Checking for SSL Certificate:

[oracle@grepora-srvr]$ openssl s_client -crlf -quiet -connect smtp.gmail.com:587 -starttls smtp
depth=3 C = US, O = Equifax, OU = Equifax Secure Certificate Authority
verify return:1
depth=2 C = US, O = GeoTrust Inc., CN = GeoTrust Global CA
verify return:1
depth=1 C = US, O = Google Inc, CN = Google Internet Authority G2
verify return:1
depth=0 C = US, ST = California, L = Mountain View, O = Google Inc, CN = smtp.gmail.com
verify return:1
250 SMTPUTF8
^C
(return:1 means "passed".)

# Testing SMTP on Database (code):

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ORA-07445: exception encountered: core dump [nstimexp()+45] [SIGSEGV] [ADDR:0x58] [PC:0x7F42ABB] [Address not mapped to object] []

Hello all,
I had faced some occourrences of this error in a 11.2.0.1 database recently.

ORA-07445: exception encountered: core dump [nstimexp()+45] [SIGSEGV] [ADDR:0x58] [PC:0x7F42ABB] [Address not mapped to object] []

After some investigation I found a match to Bug 3934729.
This issue is originally to matched to Bug 6918493, that is a reintroduction of Bug 2752985 but it’s fixed in 11.2.0.1.
However, on upgrading to 11.2.0.1 it’s a hit on Bug 3934729 which is fixed in 11.2.0.2.

Recommended actions are:
– Upgrade databases do 11.2.0.2 or higher. (best solution, but may require more efforts to validate the upgrade).
– Apply Patch 3934729: RANDOM ORA-07445 CORE DUMPS FROM DATABASE AND ORA-3113 FROM APPLICATION
– Set sqlnet.expire_time=0 (workaround)
– Ignore error.

After some research I decided to apply workaround, based on recommended usage of sqlnet.expire_time (Next weeks post is about this parameter :)).
This might be the root cause for the ORA-03135: connection lost contact and the actual value of this parameter on environment was 1, which is a very low value.

So, check which action is more suitable for your environment!
Hope it helps 🙂

Below some additional informations on my situation:

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ORA-00001: unique constraint (RMAN.CKP_U1) violated

Hey,
Don’t create so much expectations on this post.

This is because I don’t exactly fixed the issue, but workarounded…
The thing is: This error is caused in catalog database, so the workaround is simple: do a RMAN-nocatalog, I mean, simply don’t connect in catalog to perform the backup.

After completing the backup, I’d suggest you to force a synchronization with command “RESYNC CATALOG“. In worst case, on next execution the implicit resync will fix everything. 🙂

There is no bigger explanations on this, but you can same workaround in MOS Bug 12588237 – RMAN-3002 ORA-1: unique constraint (ckp_u1) violated after dataguard switchover (Doc ID 12588237.8).

And this is it for today!
See you next week!

Exadata: ORA-07445: exception encountered: core dump [ocl_lock_get_waitobj_owner()+26] [11] [0x000000000] [] [] []

Hello all,

This is because the error is generated by an unpublished bug 17891564, as per described in MOS ORA-7445 [ocl_lock_get_waitobj_owner] on an Exadata storage cell (Doc ID 1906366.1).

It affects Exadata storage cell with image version between 11.2.1.2.0 and 11.2.3.3.0. The CELLSRV process crash with this error as per:

Cellsrv encountered a fatal signal 11
Errors in file /opt/oracle/cell11.2.3.3.0_LINUX.X64_131014.1/log/diag/asm/cell//trace/svtrc_11711_27.trc  (incident=257):
ORA-07445: exception encountered: core dump [ocl_lock_get_waitobj_owner()+26] [11] [0x000000000] [] [] []
Incident details in: /opt/oracle/cell11.2.3.3.0_LINUX.X64_131014.1/log/diag/asm/cell//incident/incdir_257/svtrc_11711_27_i257.trc

The CELLSRV process should auto restart after this error.

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x$kglob: ORA-02030: can only select from fixed tables/views

Hi all!
While selecting on x$kglob with DBA credentials hanging on:

SQL> select count(*) from sys.x$kglob;
ERROR at line 1:
ORA-00942: a tabela ou view nĂŁo existe

But with sys it succeed. Ok, let’s grant privilege:

SQL> grant select on sys.x$kglob to dba;
grant select on sys.x$kglob to dba
*
ERROR at line 1:
ORA-02030: can only select from fixed tables/views

What a hell! I couldn’t grant it any way!
So the MCGayver solution was:

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