MemoryError when cursor.execute() is called with a return value when outputtypehandler is set in cx_Oracle 7.2 on Python 3.7.x 64 bit · Issue #330 · oracle/python-cx_Oracle (original) (raw)

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Description

1. Python 3.7.x 64-bit (tested with 3.7.0 and 3.7.4). Issue is not present on 3.6.8.
2. cx_Oracle 7.2. Issue is not present on cx_Oracle 7.0 and 7.1.
3. cursor.execute("SELECT 1 FROM DUAL WHERE DUMMY LIKE TRANSLATE(:arg0 USING NCHAR_CS) ESCAPE TRANSLATE('\' USING NCHAR_CS)", {':arg0' = 'X'})
4. MemoryError
5. Windows 10 v1809 64-bit.
6. Oracle Instant Client Windows Base 12.1.0.2.0 64-bit. Zip format extracted at D:\Rudi\Libs\Oracle\instantclient_12_1.
7. Database information:

• Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
• PL/SQL Release 12.1.0.2.0 - Production
• "CORE 12.1.0.2.0 Production"
• TNS for Linux: Version 12.1.0.2.0 - Production
• NLSRTL Version 12.1.0.2.0 - Production

1. PATH environment variable contains D:\Rudi\Libs\Oracle\instantclient_12_1.
2. No specific oracle environment variables set.
3. No. This issue was discovered during execution of inspectdb from django as reported here: https://code.djangoproject.com/ticket/30630.